22 files changed, 632 insertions, 194 deletions

diff --git a/include/jau/basic_types.hpp b/include/jau/basic_types.hpp
index 85a9883..493492b 100644
--- a/include/jau/basic_types.hpp
+++ b/include/jau/basic_types.hpp
@@ -26,12 +26,13 @@
 #define JAU_BASIC_TYPES_HPP_
 
 #include <cstring>
+#include <ios>
+#include <ratio>
+#include <stdexcept>
 #include <string>
-#include <memory>
 #include <cstdint>
-#include <vector>
-#include <type_traits>
 #include <iostream>
+#include <system_error>
 
 #include <jau/cpp_lang_util.hpp>
 #include <jau/packed_attribute.hpp>
@@ -306,50 +307,98 @@ namespace jau {
 
     class ExceptionBase {
       private:
+        // brief message
         std::string msg_;
+        // optional whole backtrace
         std::string backtrace_;
+        // brief message + optional whole backtrace
         std::string what_;
 
-      protected:
-        ExceptionBase(std::string type, std::string const& m, const char* file, int line) noexcept;
+      protected:        
+        ExceptionBase(const std::string &type, std::string const& m, const char* file, int line) noexcept;
 
       public:
         virtual ~ExceptionBase() noexcept = default;
-
         ExceptionBase(const ExceptionBase &o) = default;
         ExceptionBase(ExceptionBase &&o) = default;
         ExceptionBase& operator=(const ExceptionBase &o) = default;
         ExceptionBase& operator=(ExceptionBase &&o) = default;
 
-        const std::string& message() const noexcept { return msg_; }
+        /** Returns brief message. */
+        const std::string& brief_message() const noexcept { return msg_; }
+        /** Returns optional whole backtrace. */
         const std::string& backtrace() const noexcept { return backtrace_; }
-
-        /** Allow conversion to `const std::string&`, as required by Catch2's `REQUIRE_THROWS_MATCHES` */
-        operator const std::string&  () const noexcept { return message(); };
-
-        virtual const char* what() const noexcept {
-            return what_.c_str(); // return std::runtime_error::what();
-        }
+        /** Returns brief message and optional whole backtrace, i.e. std::exception::what() string. */
+        const std::string& whole_message() const noexcept { return what_; }
+        
+        /** Allow conversion to `const std::string&` using brief_message(), as required by Catch2's `REQUIRE_THROWS_MATCHES` */
+        operator const std::string&  () const noexcept { return brief_message(); };
 
         std::ostream& operator<<(std::ostream& out) noexcept {
             return out << what_;
         }
+                
+        virtual const char* what() const noexcept {
+            return whole_message().c_str();
+        }
+    };    
+    class RuntimeExceptionBase : public ExceptionBase {
+      protected:
+        RuntimeExceptionBase(const std::string &type, std::string const& m, const char* file, int line) noexcept
+        : ExceptionBase(type, m, file, line) {}
+        
+      public:
+        ~RuntimeExceptionBase() noexcept override = default;
+
+        RuntimeExceptionBase(const RuntimeExceptionBase& o) = default;
+        RuntimeExceptionBase(RuntimeExceptionBase&& o) = default;
+        RuntimeExceptionBase& operator=(const RuntimeExceptionBase& o) = default;
+        RuntimeExceptionBase& operator=(RuntimeExceptionBase&& o) = default;        
     };
+    class LogicErrorBase : public ExceptionBase {
+      protected:
+        LogicErrorBase(const std::string &type, std::string const& m, const char* file, int line) noexcept
+        : ExceptionBase(type, m, file, line) {}
 
-    class OutOfMemoryError : public std::bad_alloc, public ExceptionBase {
       public:
-        OutOfMemoryError(std::string const& m, const char* file, int line)
-        : bad_alloc(), ExceptionBase("OutOfMemoryError", m, file, line) {}
+        ~LogicErrorBase() noexcept override = default;
+
+        LogicErrorBase(const LogicErrorBase& o) = default;
+        LogicErrorBase(LogicErrorBase&& o) = default;
+        LogicErrorBase& operator=(const LogicErrorBase& o) = default;
+        LogicErrorBase& operator=(LogicErrorBase&& o) = default;                
+    };
+    class RuntimeSystemExceptionBase : public RuntimeExceptionBase {      
+      protected:
+        std::error_code m_ec;
+        RuntimeSystemExceptionBase(const std::string &type, const std::error_code& ec, std::string const& m, const char* file, int line) noexcept
+        : RuntimeExceptionBase(type, m, file, line), m_ec(ec) {}          
+
+      public:
+        ~RuntimeSystemExceptionBase() noexcept override = default;
 
+        RuntimeSystemExceptionBase(const RuntimeSystemExceptionBase& o) = default;
+        RuntimeSystemExceptionBase(RuntimeSystemExceptionBase&& o) = default;
+        RuntimeSystemExceptionBase& operator=(const RuntimeSystemExceptionBase& o) = default;
+        RuntimeSystemExceptionBase& operator=(RuntimeSystemExceptionBase&& o) = default;
+        
+        const std::error_code& code() const noexcept { return m_ec; }
+    };
+
+    class OutOfMemoryError : public ExceptionBase, public std::bad_alloc {
+      public:
+        OutOfMemoryError(std::string const& m, const char* file, int line)
+        : ExceptionBase("OutOfMemoryError", m, file, line), bad_alloc() {}        
+        
         const char* what() const noexcept override {
-            return ExceptionBase::what(); // return std::runtime_error::what();
+            return whole_message().c_str();
         }
     };
-
-    class RuntimeException : public std::exception, public ExceptionBase {
+            
+    class RuntimeException : public RuntimeExceptionBase, public std::runtime_error {
       protected:
-        RuntimeException(std::string type, std::string const& m, const char* file, int line) noexcept
-        : exception(), ExceptionBase(std::move(type), m, file, line) {}
+        RuntimeException(const std::string &type, std::string const& m, const char* file, int line) noexcept
+        : RuntimeExceptionBase(type, m, file, line), runtime_error(whole_message()) {}
 
       public:
         RuntimeException(std::string const& m, const char* file, int line) noexcept
@@ -361,66 +410,134 @@ namespace jau {
         RuntimeException(RuntimeException&& o) = default;
         RuntimeException& operator=(const RuntimeException& o) = default;
         RuntimeException& operator=(RuntimeException&& o) = default;
+        
+        // base class std::exception:
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
+    };        
+    class LogicError : public LogicErrorBase, public std::logic_error {
+      protected:
+        LogicError(const std::string &type, std::string const& m, const char* file, int line) noexcept
+        : LogicErrorBase(type, m, file, line), logic_error(whole_message()) {}
+
+      public:
+        LogicError(std::string const& m, const char* file, int line) noexcept
+        : LogicError("LogicErrorStd", m, file, line) {}
+
+        ~LogicError() noexcept override = default;
 
+        LogicError(const LogicError& o) = default;
+        LogicError(LogicError&& o) = default;
+        LogicError& operator=(const LogicError& o) = default;
+        LogicError& operator=(LogicError&& o) = default;
+                
         const char* what() const noexcept override {
-            return ExceptionBase::what();
+            return whole_message().c_str();
         }
     };
+    class RuntimeSystemException : public RuntimeSystemExceptionBase, public std::system_error {
+      protected:
+        RuntimeSystemException(const std::string &type, const std::error_code& ec, std::string const& m, const char* file, int line) noexcept
+        : RuntimeSystemExceptionBase(type, ec, m, file, line), system_error(ec, whole_message()) {}
 
-    class InternalError : public RuntimeException {
       public:
-        InternalError(std::string const& m, const char* file, int line) noexcept
-        : RuntimeException("InternalError", m, file, line) {}
-    };
+        RuntimeSystemException(const std::error_code& ec, std::string const& m, const char* file, int line) noexcept
+        : RuntimeSystemException("RuntimeSystemExceptionStd", ec, m, file, line) {}
 
-    class NotImplementedError : public RuntimeException {
+        ~RuntimeSystemException() noexcept override = default;
+
+        RuntimeSystemException(const RuntimeSystemException& o) = default;
+        RuntimeSystemException(RuntimeSystemException&& o) = default;
+        RuntimeSystemException& operator=(const RuntimeSystemException& o) = default;
+        RuntimeSystemException& operator=(RuntimeSystemException&& o) = default;
+        
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
+    };
+    
+    class IndexOutOfBoundsError : public LogicErrorBase, public std::out_of_range {
+      protected:
+        IndexOutOfBoundsError(const char* file, int line, const std::string &type, std::string const& m) noexcept
+        : LogicErrorBase(type, m, file, line), out_of_range(whole_message()) {}
+          
       public:
-        NotImplementedError(std::string const& m, const char* file, int line) noexcept
-        : RuntimeException("NotImplementedError", m, file, line) {}
+        IndexOutOfBoundsError(const std::size_t index, const std::size_t length, const char* file, int line) noexcept
+        : IndexOutOfBoundsError(file, line, "IndexOutOfBoundsError", "Index "+std::to_string(index)+", data length "+std::to_string(length)) {}
+
+        IndexOutOfBoundsError(const std::string& index_s, const std::string& length_s, const char* file, int line) noexcept
+        : IndexOutOfBoundsError(file, line, "IndexOutOfBoundsError", "Index "+index_s+", data length "+length_s) {}
+
+        IndexOutOfBoundsError(const std::size_t index, const std::size_t count, const std::size_t length, const char* file, int line) noexcept
+        : IndexOutOfBoundsError(file, line, "IndexOutOfBoundsError", "Index "+std::to_string(index)+", count "+std::to_string(count)+", data length "+std::to_string(length)) {}
+                
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
     };
 
-    class NullPointerException : public RuntimeException {
+    class IllegalArgumentError : public LogicErrorBase, public std::invalid_argument {
+      protected:
+        IllegalArgumentError(std::string const& type, std::string const& m, const char* file, int line) noexcept
+        : LogicErrorBase(type, m, file, line), invalid_argument(whole_message()) {}
+          
       public:
-        NullPointerException(std::string const& m, const char* file, int line) noexcept
-        : RuntimeException("NullPointerException", m, file, line) {}
+        IllegalArgumentError(std::string const& m, const char* file, int line) noexcept
+        : IllegalArgumentError("IllegalArgumentError", m, file, line) {}
+                        
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
     };
 
-    class IllegalArgumentException : public RuntimeException {
+    class IllegalStateError : public LogicErrorBase, public std::domain_error {
+      protected:
+        IllegalStateError(std::string const& type, std::string const& m, const char* file, int line) noexcept
+        : LogicErrorBase(type, m, file, line), domain_error(whole_message()) {}
+          
       public:
-        IllegalArgumentException(std::string const& m, const char* file, int line) noexcept
-        : RuntimeException("IllegalArgumentException", m, file, line) {}
+        IllegalStateError(std::string const& m, const char* file, int line) noexcept
+        : IllegalStateError("IllegalStateError", m, file, line) {}
+                        
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
     };
 
-    class IllegalStateException : public RuntimeException {
+    class IOError : public RuntimeSystemExceptionBase, public std::ios_base::failure {
       public:
-        IllegalStateException(std::string const& m, const char* file, int line) noexcept
-        : RuntimeException("IllegalStateException", m, file, line) {}
+        IOError(std::string const& m, const char* file, int line, const std::error_code& ec = std::io_errc::stream) noexcept
+        : RuntimeSystemExceptionBase("IOError", ec, m, file, line), failure(whole_message(), ec) {}        
+                        
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
     };
 
-    class UnsupportedOperationException : public RuntimeException {
+    class InternalError : public RuntimeException {
       public:
-        UnsupportedOperationException(std::string const& m, const char* file, int line) noexcept
-        : RuntimeException("UnsupportedOperationException", m, file, line) {}
+        InternalError(std::string const& m, const char* file, int line) noexcept
+        : RuntimeException("InternalError", m, file, line) {}        
     };
 
-    class IndexOutOfBoundsException : public RuntimeException {
+    class NotImplementedException : public RuntimeException {
       public:
-        IndexOutOfBoundsException(const std::size_t index, const std::size_t length, const char* file, int line) noexcept
-        : RuntimeException("IndexOutOfBoundsException", "Index "+std::to_string(index)+", data length "+std::to_string(length), file, line) {}
-
-        IndexOutOfBoundsException(const std::string& index_s, const std::string& length_s, const char* file, int line) noexcept
-        : RuntimeException("IndexOutOfBoundsException", "Index "+index_s+", data length "+length_s, file, line) {}
-
-        IndexOutOfBoundsException(const std::size_t index, const std::size_t count, const std::size_t length, const char* file, int line) noexcept
-        : RuntimeException("IndexOutOfBoundsException", "Index "+std::to_string(index)+", count "+std::to_string(count)+", data length "+std::to_string(length), file, line) {}
+        NotImplementedException(std::string const& m, const char* file, int line) noexcept
+        : RuntimeException("NotImplementedException", m, file, line) {}
     };
 
-    class IOError : public RuntimeException {
+    class NullPointerException : public RuntimeException {
       public:
-        IOError(std::string const& m, const char* file, int line) noexcept
-        : RuntimeException("IOError", m, file, line) {}
+        NullPointerException(std::string const& m, const char* file, int line) noexcept
+        : RuntimeException("NullPointerException", m, file, line) {}
     };
 
+    class UnsupportedOperationException : public RuntimeException {
+      public:
+        UnsupportedOperationException(std::string const& m, const char* file, int line) noexcept
+        : RuntimeException("UnsupportedOperationException", m, file, line) {}
+    };
 
     /**
     // *************************************************
@@ -436,42 +553,42 @@ namespace jau {
     inline void set_bit_uint32(const uint8_t nr, uint32_t &mask)
     {
         using namespace jau::int_literals;
-        if( nr > 31 ) { throw IndexOutOfBoundsException(nr, 32, E_FILE_LINE); }
+        if( nr > 31 ) { throw IndexOutOfBoundsError(nr, 32, E_FILE_LINE); }
         mask |= 1_u32 << (nr & 31);
     }
 
     inline void clear_bit_uint32(const uint8_t nr, uint32_t &mask)
     {
         using namespace jau::int_literals;
-        if( nr > 31 ) { throw IndexOutOfBoundsException(nr, 32, E_FILE_LINE); }
+        if( nr > 31 ) { throw IndexOutOfBoundsError(nr, 32, E_FILE_LINE); }
         mask |= ~(1_u32 << (nr & 31));
     }
 
     inline uint32_t test_bit_uint32(const uint8_t nr, const uint32_t mask)
     {
         using namespace jau::int_literals;
-        if( nr > 31 ) { throw IndexOutOfBoundsException(nr, 32, E_FILE_LINE); }
+        if( nr > 31 ) { throw IndexOutOfBoundsError(nr, 32, E_FILE_LINE); }
         return mask & (1_u32 << (nr & 31));
     }
 
     inline void set_bit_uint64(const uint8_t nr, uint64_t &mask)
     {
         using namespace jau::int_literals;
-        if( nr > 63 ) { throw IndexOutOfBoundsException(nr, 64, E_FILE_LINE); }
+        if( nr > 63 ) { throw IndexOutOfBoundsError(nr, 64, E_FILE_LINE); }
         mask |= 1_u64 << (nr & 63);
     }
 
     inline void clear_bit_uint64(const uint8_t nr, uint64_t &mask)
     {
         using namespace jau::int_literals;
-        if( nr > 63 ) { throw IndexOutOfBoundsException(nr, 64, E_FILE_LINE); }
+        if( nr > 63 ) { throw IndexOutOfBoundsError(nr, 64, E_FILE_LINE); }
         mask |= ~(1_u64 << (nr & 63));
     }
 
     inline uint64_t test_bit_uint64(const uint8_t nr, const uint64_t mask)
     {
         using namespace jau::int_literals;
-        if( nr > 63 ) { throw IndexOutOfBoundsException(nr, 64, E_FILE_LINE); }
+        if( nr > 63 ) { throw IndexOutOfBoundsError(nr, 64, E_FILE_LINE); }
         return mask & (1_u64 << (nr & 63));
     }
 
diff --git a/include/jau/darray.hpp b/include/jau/darray.hpp
index 7ad869b..279914a 100644
--- a/include/jau/darray.hpp
+++ b/include/jau/darray.hpp
@@ -204,7 +204,7 @@ namespace jau {
             constexpr value_type * allocStore(const size_type size_) {
                 if( 0 != size_ ) {
                     if( size_ > DIFF_MAX ) {
-                        throw jau::IllegalArgumentException("alloc "+std::to_string(size_)+" > difference_type max "+
+                        throw jau::IllegalArgumentError("alloc "+std::to_string(size_)+" > difference_type max "+
                                 std::to_string(DIFF_MAX), E_FILE_LINE);
                     }
                     value_type * m = alloc_inst.allocate(size_);
@@ -327,7 +327,7 @@ In copy constructor ‘std::__shared_count<_Lp>::__shared_count(const std::__sha
             constexpr void ctor_copy_range_check(pointer dest, iterator first, const_iterator last) {
                 JAU_DARRAY_PRINTF0("ctor_copy_range_check [%zd .. %zd] -> ??, dist %zd\n", (first-begin_), (last-begin_)-1, (last-first)-1);
                 if( first > last ) {
-                    throw jau::IllegalArgumentException("first "+to_hexstring(first)+" > last "+to_hexstring(last), E_FILE_LINE);
+                    throw jau::IllegalArgumentError("first "+to_hexstring(first)+" > last "+to_hexstring(last), E_FILE_LINE);
                 }
                 for(; first < last; ++dest, ++first) {
                     new (const_cast<pointer_mutable>(dest)) value_type( *first ); // placement new
@@ -336,7 +336,7 @@ In copy constructor ‘std::__shared_count<_Lp>::__shared_count(const std::__sha
             constexpr pointer clone_range_check(const size_type dest_capacity, iterator first, const_iterator last) {
                 JAU_DARRAY_PRINTF0("clone_range_check [%zd .. %zd], count %zd -> %d\n", (first-begin_), (last-begin_)-1, (last-first)-1, (int)dest_capacity);
                 if( dest_capacity < size_type(last-first) ) {
-                    throw jau::IllegalArgumentException("capacity "+std::to_string(dest_capacity)+" < source range "+
+                    throw jau::IllegalArgumentError("capacity "+std::to_string(dest_capacity)+" < source range "+
                                                         std::to_string(difference_type(last-first)), E_FILE_LINE);
                 }
                 pointer dest = allocStore(dest_capacity);
@@ -347,7 +347,7 @@ In copy constructor ‘std::__shared_count<_Lp>::__shared_count(const std::__sha
             template< class InputIt >
             constexpr static void ctor_copy_range_foreign(pointer dest, InputIt first, InputIt last) {
                 if( first > last ) {
-                    throw jau::IllegalArgumentException("first "+jau::to_string( first )+" > last "+
+                    throw jau::IllegalArgumentError("first "+jau::to_string( first )+" > last "+
                                                                  jau::to_string( last ), E_FILE_LINE);
                 }
                 for(; first != last; ++dest, ++first) {
@@ -357,7 +357,7 @@ In copy constructor ‘std::__shared_count<_Lp>::__shared_count(const std::__sha
             template< class InputIt >
             constexpr pointer clone_range_foreign(const size_type dest_capacity, InputIt first, InputIt last) {
                 if( dest_capacity < size_type(last-first) ) {
-                    throw jau::IllegalArgumentException("capacity "+std::to_string(dest_capacity)+" < source range "+
+                    throw jau::IllegalArgumentError("capacity "+std::to_string(dest_capacity)+" < source range "+
                                                         std::to_string(difference_type(last-first)), E_FILE_LINE);
                 }
                 pointer dest = allocStore(dest_capacity);
@@ -803,7 +803,7 @@ In copy constructor ‘std::__shared_count<_Lp>::__shared_count(const std::__sha
                 if( 0 <= i && i < size() ) {
                     return *(begin_+i);
                 }
-                throw jau::IndexOutOfBoundsException(i, size(), E_FILE_LINE);
+                throw jau::IndexOutOfBoundsError(i, size(), E_FILE_LINE);
             }
 
             /**
@@ -813,7 +813,7 @@ In copy constructor ‘std::__shared_count<_Lp>::__shared_count(const std::__sha
                 if( 0 <= i && i < size() ) {
                     return *(begin_+i);
                 }
-                throw jau::IndexOutOfBoundsException(i, size(), E_FILE_LINE);
+                throw jau::IndexOutOfBoundsError(i, size(), E_FILE_LINE);
             }
 
             // write access, mutable array operations
@@ -997,7 +997,7 @@ In copy constructor ‘std::__shared_count<_Lp>::__shared_count(const std::__sha
 
                     return begin_ <= pos && pos <= end_ ? const_cast<iterator>(pos) : end_;
                 } else {
-                    throw jau::IndexOutOfBoundsException(std::to_string(difference_type(pos - begin_)), std::to_string(size()), E_FILE_LINE);
+                    throw jau::IndexOutOfBoundsError(std::to_string(difference_type(pos - begin_)), std::to_string(size()), E_FILE_LINE);
                 }
             }
 
@@ -1038,7 +1038,7 @@ In copy constructor ‘std::__shared_count<_Lp>::__shared_count(const std::__sha
 
                     return begin_ <= pos_new && pos_new <= end_ ? pos_new : end_;
                 } else {
-                    throw jau::IndexOutOfBoundsException(std::to_string(difference_type(pos - begin_)), std::to_string(size()), E_FILE_LINE);
+                    throw jau::IndexOutOfBoundsError(std::to_string(difference_type(pos - begin_)), std::to_string(size()), E_FILE_LINE);
                 }
             }
 
@@ -1071,7 +1071,7 @@ In copy constructor ‘std::__shared_count<_Lp>::__shared_count(const std::__sha
 
                     return begin_ <= pos_new && pos_new <= end_ ? pos_new : end_;
                 } else {
-                    throw jau::IndexOutOfBoundsException(std::to_string(difference_type(pos - begin_)), std::to_string(size()), E_FILE_LINE);
+                    throw jau::IndexOutOfBoundsError(std::to_string(difference_type(pos - begin_)), std::to_string(size()), E_FILE_LINE);
                 }
             }
 
@@ -1101,7 +1101,7 @@ In copy constructor ‘std::__shared_count<_Lp>::__shared_count(const std::__sha
 
                     return begin_ <= pos_new && pos_new <= end_ ? pos_new : end_;
                 } else {
-                    throw jau::IndexOutOfBoundsException(std::to_string(difference_type(pos - begin_)), std::to_string(size()), E_FILE_LINE);
+                    throw jau::IndexOutOfBoundsError(std::to_string(difference_type(pos - begin_)), std::to_string(size()), E_FILE_LINE);
                 }
             }
 
diff --git a/include/jau/jni/helper_jni.hpp b/include/jau/jni/helper_jni.hpp
index 0ee3f75..36247cb 100644
--- a/include/jau/jni/helper_jni.hpp
+++ b/include/jau/jni/helper_jni.hpp
@@ -76,21 +76,23 @@ namespace jau::jni {
     void java_exception_check_and_throw(JNIEnv *env, const char* file, int line);
 
     void print_native_caught_exception_fwd2java(const jau::OutOfMemoryError &e, const char* file, int line);
-    void print_native_caught_exception_fwd2java(const jau::RuntimeException &e, const char* file, int line);
+    void print_native_caught_exception_fwd2java(const jau::LogicErrorBase &e, const char* file, int line);
+    void print_native_caught_exception_fwd2java(const jau::RuntimeExceptionBase &e, const char* file, int line);
     void print_native_caught_exception_fwd2java(const std::exception &e, const char* file, int line);
     void print_native_caught_exception_fwd2java(const std::string &msg, const char* file, int line);
     void print_native_caught_exception_fwd2java(const char * cmsg, const char* file, int line);
 
     void raise_java_exception(JNIEnv *env, const std::exception &e, const char* file, int line);
     void raise_java_exception(JNIEnv *env, const std::runtime_error &e, const char* file, int line);
-    void raise_java_exception(JNIEnv *env, const jau::RuntimeException &e, const char* file, int line);
+    void raise_java_exception(JNIEnv *env, const jau::LogicErrorBase &e, const char* file, int line);
+    void raise_java_exception(JNIEnv *env, const jau::RuntimeExceptionBase &e, const char* file, int line);
     void raise_java_exception(JNIEnv *env, const jau::InternalError &e, const char* file, int line);
     void raise_java_exception(JNIEnv *env, const jau::NullPointerException &e, const char* file, int line);
-    void raise_java_exception(JNIEnv *env, const jau::IllegalArgumentException &e, const char* file, int line);
+    void raise_java_exception(JNIEnv *env, const jau::IllegalArgumentError &e, const char* file, int line);
     void raise_java_exception(JNIEnv *env, const std::invalid_argument &e, const char* file, int line);
-    void raise_java_exception(JNIEnv *env, const jau::IllegalStateException &e, const char* file, int line);
+    void raise_java_exception(JNIEnv *env, const jau::IllegalStateError &e, const char* file, int line);
     void raise_java_exception(JNIEnv *env, const jau::UnsupportedOperationException &e, const char* file, int line);
-    void raise_java_exception(JNIEnv *env, const jau::IndexOutOfBoundsException &e, const char* file, int line);
+    void raise_java_exception(JNIEnv *env, const jau::IndexOutOfBoundsError &e, const char* file, int line);
     void raise_java_exception(JNIEnv *env, const std::bad_alloc &e, const char* file, int line);
     void raise_java_exception(JNIEnv *env, const jau::OutOfMemoryError &e, const char* file, int line);
 
diff --git a/include/jau/jni/jni_mem.hpp b/include/jau/jni/jni_mem.hpp
index 5fca3f1..378a42c 100644
--- a/include/jau/jni/jni_mem.hpp
+++ b/include/jau/jni/jni_mem.hpp
@@ -30,7 +30,6 @@
 #define JAU_JNIMEM__HPP_
 
 #include <jni.h>
-#include <stdexcept>
 #include <mutex>
 
 #include <jau/basic_types.hpp>
diff --git a/include/jau/math/geom/frustum.hpp b/include/jau/math/geom/frustum.hpp
index d6452fa..e516efb 100644
--- a/include/jau/math/geom/frustum.hpp
+++ b/include/jau/math/geom/frustum.hpp
@@ -127,7 +127,7 @@ class Frustum {
         : fovhv(fovhv_), zNear(zNear_), zFar(zFar_)
         {
             if( zNear <= 0.0f || zFar <= zNear ) {
-                throw IllegalArgumentException("Requirements zNear > 0 and zFar > zNear, but zNear "+std::to_string(zNear)+", zFar "+std::to_string(zFar), E_FILE_LINE);
+                throw IllegalArgumentError("Requirements zNear > 0 and zFar > zNear, but zNear "+std::to_string(zNear)+", zFar "+std::to_string(zFar), E_FILE_LINE);
             }
         }
 
diff --git a/include/jau/math/mat4f.hpp b/include/jau/math/mat4f.hpp
index a0bc107..f016f3a 100644
--- a/include/jau/math/mat4f.hpp
+++ b/include/jau/math/mat4f.hpp
@@ -1203,10 +1203,10 @@ class alignas(Value_type) Matrix4 {
                           const value_type bottom, const value_type top,
                           const value_type zNear, const value_type zFar) {
         if( zNear <= zero || zFar <= zNear ) {
-            throw jau::IllegalArgumentException("Requirements zNear > 0 and zFar > zNear, but zNear "+std::to_string(zNear)+", zFar "+std::to_string(zFar), E_FILE_LINE);
+            throw jau::IllegalArgumentError("Requirements zNear > 0 and zFar > zNear, but zNear "+std::to_string(zNear)+", zFar "+std::to_string(zFar), E_FILE_LINE);
         }
         if( left == right || top == bottom) {
-            throw jau::IllegalArgumentException("GL_INVALID_VALUE: top,bottom and left,right must not be equal", E_FILE_LINE);
+            throw jau::IllegalArgumentError("GL_INVALID_VALUE: top,bottom and left,right must not be equal", E_FILE_LINE);
         }
         {
             // m00 = m11 = m22 = m33 = 1f;
diff --git a/include/jau/math/math_error.hpp b/include/jau/math/math_error.hpp
index fdd496f..4ecf3f5 100644
--- a/include/jau/math/math_error.hpp
+++ b/include/jau/math/math_error.hpp
@@ -43,62 +43,107 @@ namespace jau::math {
      */
 
     /** Error types as specified by [C++ Math Error Handling](https://en.cppreference.com/w/cpp/numeric/math/math_errhandling) */
-    enum class math_error_t {
-            /** See FE_INVALID */
+    enum class math_error_t : uint16_t {
+            /** no math error */
+            none = 0,
+            /** See FE_INVALID, i.e. MathDomainError, std::domain_error : std::logic_error */
             invalid,
-            /** See FE_DIVBYZERO */
+            /** See FE_DIVBYZERO, i.e. MathDivByZeroError, std::domain_error : std::logic_error*/
             div_by_zero,
-            /** See FE_OVERFLOW */
+            /** See FE_OVERFLOW, i.e. MathOverflowError, std::overflow_error : std::runtime_error */
             overflow,
-            /** See FE_UNDERFLOW */
+            /** See FE_UNDERFLOW, i.e. MathUnderflowError, std::underflow_error : std::runtime_error */
             underflow,
-            /** See FE_INEXACT */
-            inexact
+            /** See FE_INEXACT, i.e. MathInexactError, std::runtime_error */
+            inexact,
+            /** undefined math error */
+            undefined = 1U << 15,
     };
     /** Returns std::string representation of math_error_t */
     std::string to_string(const math_error_t v) noexcept;
 
-    class MathError : public RuntimeException {
+    class MathErrorBase : public ExceptionBase {
       private:
         math_error_t m_error;
 
-      public:
-        MathError(math_error_t err, std::string const& m, const char* file, int line) noexcept
-        : RuntimeException("MathError("+to_string(err)+")", m, file, line), m_error(err) {}
-
-        math_error_t error() const noexcept;
+      protected:
+        MathErrorBase(math_error_t err, std::string const& m, const char* file, int line) noexcept
+        : ExceptionBase("MathError("+to_string(err)+")", m, file, line), m_error(err) {}
+        
+      public:        
+        math_error_t error() const noexcept;                
     };
-    /** math_error_t::invalid */
-    class MathDomainError : public MathError {
+    class MathRuntimeErrorBase : public MathErrorBase {
+      protected:
+        MathRuntimeErrorBase(math_error_t err, std::string const& m, const char* file, int line) noexcept
+        : MathErrorBase(err, m, file, line) {}
+    };
+    
+    class MathError : public MathErrorBase, public std::exception {
       public:
-        MathDomainError(std::string const& m, const char* file, int line) noexcept
-        : MathError(math_error_t::invalid, m, file, line) {}
+        MathError(math_error_t err, std::string const& m, const char* file, int line) noexcept
+        : MathErrorBase(err, m, file, line), exception() {}
+                
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
     };
-    /** math_error_t::div_by_zero, i.e. pole error */
-    class MathDivByZeroError : public MathError {
+    
+    /** math_error_t::inexact */
+    class MathInexactError : public MathRuntimeErrorBase, public std::runtime_error {
       public:
-        MathDivByZeroError(std::string const& m, const char* file, int line) noexcept
-        : MathError(math_error_t::div_by_zero, m, file, line) {}
+        MathInexactError(std::string const& m, const char* file, int line) noexcept
+        : MathRuntimeErrorBase(math_error_t::inexact, m, file, line), runtime_error(whole_message()) {}
+                
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
     };
+    
     /** math_error_t::overflow */
-    class MathOverflowError : public MathError {
+    class MathOverflowError : public MathRuntimeErrorBase, public std::overflow_error {
       public:
         MathOverflowError(std::string const& m, const char* file, int line) noexcept
-        : MathError(math_error_t::overflow, m, file, line) {}
+        : MathRuntimeErrorBase(math_error_t::overflow, m, file, line), overflow_error(whole_message()) {}        
+                
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
     };
+    
     /** math_error_t::underflow */
-    class MathUnderflowError : public MathError {
+    class MathUnderflowError : public MathRuntimeErrorBase, public std::underflow_error {
       public:
         MathUnderflowError(std::string const& m, const char* file, int line) noexcept
-        : MathError(math_error_t::underflow, m, file, line) {}
+        : MathRuntimeErrorBase(math_error_t::underflow, m, file, line), underflow_error(whole_message()) {}        
+                
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
     };
-    /** math_error_t::inexact */
-    class MathInexactError : public MathError {
+
+    /** math_error_t::invalid */
+    class MathDomainError : public MathErrorBase, public std::domain_error {
+      protected:
+        MathDomainError(math_error_t err, std::string const& m, const char* file, int line) noexcept
+        : MathErrorBase(err, m, file, line), domain_error(whole_message()) {}
+        
       public:
-        MathInexactError(std::string const& m, const char* file, int line) noexcept
-        : MathError(math_error_t::inexact, m, file, line) {}
+        MathDomainError(std::string const& m, const char* file, int line) noexcept
+        : MathErrorBase(math_error_t::invalid, m, file, line), domain_error(whole_message()) {}        
+                
+        const char* what() const noexcept override {
+            return whole_message().c_str();
+        }
     };
-
+    
+    /** math_error_t::div_by_zero, i.e. pole error */
+    class MathDivByZeroError : public MathDomainError {
+      public:
+        MathDivByZeroError(std::string const& m, const char* file, int line) noexcept
+        : MathDomainError(math_error_t::div_by_zero, m, file, line) {}
+    };
+    
     /**@}*/
 
 } // namespace jau
diff --git a/include/jau/math/util/pmvmat4f.hpp b/include/jau/math/util/pmvmat4f.hpp
index 3073ea3..f4cc846 100644
--- a/include/jau/math/util/pmvmat4f.hpp
+++ b/include/jau/math/util/pmvmat4f.hpp
@@ -329,7 +329,7 @@ class PMVMatrix4 {
      */
     Mat4& getMvi() {
         if( 0 == ( INVERSE_MODELVIEW & requestBits ) ) { // FIXME
-            throw jau::IllegalArgumentException("Not requested in ctor", E_FILE_LINE);
+            throw jau::IllegalArgumentError("Not requested in ctor", E_FILE_LINE);
         }
         updateImpl(false);
         return matMvi;
@@ -344,7 +344,7 @@ class PMVMatrix4 {
      */
     SyncMat4& getSyncMvi() {
         if( 0 == ( INVERSE_MODELVIEW & requestBits ) ) { // FIXME
-            throw jau::IllegalArgumentException("Not requested in ctor", E_FILE_LINE);
+            throw jau::IllegalArgumentError("Not requested in ctor", E_FILE_LINE);
         }
         return syncMvi;
     }
@@ -358,7 +358,7 @@ class PMVMatrix4 {
      */
     Mat4& getMvit() {
         if( 0 == ( INVERSE_TRANSPOSED_MODELVIEW & requestBits ) ) { // FIXME
-            throw jau::IllegalArgumentException("Not requested in ctor", E_FILE_LINE);
+            throw jau::IllegalArgumentError("Not requested in ctor", E_FILE_LINE);
         }
         updateImpl(false);
         return matMvit;
@@ -373,7 +373,7 @@ class PMVMatrix4 {
      */
     SyncMat4& getSyncMvit() {
         if( 0 == ( INVERSE_TRANSPOSED_MODELVIEW & requestBits ) ) { // FIXME
-            throw jau::IllegalArgumentException("Not requested in ctor", E_FILE_LINE);
+            throw jau::IllegalArgumentError("Not requested in ctor", E_FILE_LINE);
         }
         return syncMvit;
     }
@@ -387,7 +387,7 @@ class PMVMatrix4 {
      */
     SyncMats4f& getSyncPMvMvi() {
         if( 0 == ( INVERSE_MODELVIEW & requestBits ) ) { // FIXME
-            throw jau::IllegalArgumentException("Not requested in ctor", E_FILE_LINE);
+            throw jau::IllegalArgumentError("Not requested in ctor", E_FILE_LINE);
         }
         return syncP_Mv_Mvi;
     }
@@ -401,7 +401,7 @@ class PMVMatrix4 {
      */
     SyncMats4f& getSyncPMvMviMvit() {
         if( 0 == ( INVERSE_TRANSPOSED_MODELVIEW & requestBits ) ) { // FIXME
-            throw jau::IllegalArgumentException("Not requested in ctor", E_FILE_LINE);
+            throw jau::IllegalArgumentError("Not requested in ctor", E_FILE_LINE);
         }
         return syncP_Mv_Mvi_Mvit;
     }
diff --git a/include/jau/ringbuffer.hpp b/include/jau/ringbuffer.hpp
index b808007..85468f8 100644
--- a/include/jau/ringbuffer.hpp
+++ b/include/jau/ringbuffer.hpp
@@ -976,7 +976,7 @@ class ringbuffer {
                 return;
             }
             if( size_ > newCapacity ) {
-                throw IllegalArgumentException("amount "+std::to_string(newCapacity)+" < size, "+toString(), E_FILE_LINE);
+                throw IllegalArgumentError("amount "+std::to_string(newCapacity)+" < size, "+toString(), E_FILE_LINE);
             }
 
             // save current data
diff --git a/java_jni/jni/helper_jni.cxx b/java_jni/jni/helper_jni.cxx
index e0e6e87..19ed13f 100644
--- a/java_jni/jni/helper_jni.cxx
+++ b/java_jni/jni/helper_jni.cxx
@@ -24,7 +24,6 @@
  */
 
 #include <jni.h>
-#include <memory>
 #include <stdexcept>
 #include <vector>
 
@@ -80,7 +79,10 @@ void jau::jni::java_exception_check_and_throw(JNIEnv *env, const char* file, int
 void jau::jni::print_native_caught_exception_fwd2java(const jau::OutOfMemoryError &e, const char* file, int line) {
     fprintf(stderr, "Native exception caught @ %s:%d and forward to Java: %s\n", file, line, e.what()); fflush(stderr);
 }
-void jau::jni::print_native_caught_exception_fwd2java(const jau::RuntimeException &e, const char* file, int line) {
+void jau::jni::print_native_caught_exception_fwd2java(const jau::LogicErrorBase &e, const char* file, int line) {
+    fprintf(stderr, "Native exception caught @ %s:%d and forward to Java: %s\n", file, line, e.what()); fflush(stderr);
+}
+void jau::jni::print_native_caught_exception_fwd2java(const jau::RuntimeExceptionBase &e, const char* file, int line) {
     fprintf(stderr, "Native exception caught @ %s:%d and forward to Java: %s\n", file, line, e.what()); fflush(stderr);
 }
 void jau::jni::print_native_caught_exception_fwd2java(const std::exception &e, const char* file, int line) {
@@ -101,36 +103,40 @@ void jau::jni::raise_java_exception(JNIEnv *env, const std::runtime_error &e, co
     print_native_caught_exception_fwd2java(e, file, line);
     env->ThrowNew(env->FindClass("java/lang/RuntimeException"), e.what());
 }
-void jau::jni::raise_java_exception(JNIEnv *env, const jau::RuntimeException &e, const char* file, int line) {
+void jau::jni::raise_java_exception(JNIEnv *env, const jau::LogicErrorBase &e, const char* file, int line) {
+    print_native_caught_exception_fwd2java(e, file, line);
+    env->ThrowNew(env->FindClass("java/lang/Exception"), e.what());    
+}
+void jau::jni::raise_java_exception(JNIEnv *env, const jau::RuntimeExceptionBase &e, const char* file, int line) {
     print_native_caught_exception_fwd2java(e, file, line);
     env->ThrowNew(env->FindClass("java/lang/RuntimeException"), e.what());
 }
 void jau::jni::raise_java_exception(JNIEnv *env, const jau::InternalError &e, const char* file, int line) {
-    print_native_caught_exception_fwd2java(e, file, line);
+    print_native_caught_exception_fwd2java(static_cast<const jau::RuntimeExceptionBase&>(e), file, line);
     env->ThrowNew(env->FindClass("java/lang/InternalError"), e.what());
 }
 void jau::jni::raise_java_exception(JNIEnv *env, const jau::NullPointerException &e, const char* file, int line) {
-    print_native_caught_exception_fwd2java(e, file, line);
+    print_native_caught_exception_fwd2java(static_cast<const jau::RuntimeExceptionBase&>(e), file, line);
     env->ThrowNew(env->FindClass("java/lang/NullPointerException"), e.what());
 }
-void jau::jni::raise_java_exception(JNIEnv *env, const jau::IllegalArgumentException &e, const char* file, int line) {
-    print_native_caught_exception_fwd2java(e, file, line);
+void jau::jni::raise_java_exception(JNIEnv *env, const jau::IllegalArgumentError &e, const char* file, int line) {
+    print_native_caught_exception_fwd2java(static_cast<const jau::LogicErrorBase&>(e), file, line);
     env->ThrowNew(env->FindClass("java/lang/IllegalArgumentException"), e.what());
 }
 void jau::jni::raise_java_exception(JNIEnv *env, const std::invalid_argument &e, const char* file, int line) {
     print_native_caught_exception_fwd2java(e, file, line);
     env->ThrowNew(env->FindClass("java/lang/IllegalArgumentException"), e.what());
 }
-void jau::jni::raise_java_exception(JNIEnv *env, const jau::IllegalStateException &e, const char* file, int line) {
-    print_native_caught_exception_fwd2java(e, file, line);
+void jau::jni::raise_java_exception(JNIEnv *env, const jau::IllegalStateError &e, const char* file, int line) {
+    print_native_caught_exception_fwd2java(static_cast<const jau::LogicErrorBase&>(e), file, line);
     env->ThrowNew(env->FindClass("java/lang/IllegalStateException"), e.what());
 }
 void jau::jni::raise_java_exception(JNIEnv *env, const jau::UnsupportedOperationException &e, const char* file, int line) {
-    print_native_caught_exception_fwd2java(e, file, line);
+    print_native_caught_exception_fwd2java(static_cast<const jau::RuntimeExceptionBase&>(e), file, line);
     env->ThrowNew(env->FindClass("java/lang/UnsupportedOperationException"), e.what());
 }
-void jau::jni::raise_java_exception(JNIEnv *env, const jau::IndexOutOfBoundsException &e, const char* file, int line) {
-    print_native_caught_exception_fwd2java(e, file, line);
+void jau::jni::raise_java_exception(JNIEnv *env, const jau::IndexOutOfBoundsError &e, const char* file, int line) {
+    print_native_caught_exception_fwd2java(static_cast<const jau::LogicErrorBase&>(e), file, line);
     env->ThrowNew(env->FindClass("java/lang/IndexOutOfBoundsException"), e.what());
 }
 void jau::jni::raise_java_exception(JNIEnv *env, const std::bad_alloc &e, const char* file, int line) {
@@ -153,17 +159,19 @@ void jau::jni::rethrow_and_raise_java_exception_jauimpl(JNIEnv *env, const char*
         jau::jni::raise_java_exception(env, e, file, line);
     } catch (const jau::InternalError &e) {
         jau::jni::raise_java_exception(env, e, file, line);
-    } catch (const jau::NullPointerException &e) {
+    } catch (const jau::IndexOutOfBoundsError &e) {
         jau::jni::raise_java_exception(env, e, file, line);
-    } catch (const jau::IllegalArgumentException &e) {
+    } catch (const jau::IllegalArgumentError &e) {
         jau::jni::raise_java_exception(env, e, file, line);
-    } catch (const jau::IllegalStateException &e) {
+    } catch (const jau::IllegalStateError &e) {
         jau::jni::raise_java_exception(env, e, file, line);
     } catch (const jau::UnsupportedOperationException &e) {
         jau::jni::raise_java_exception(env, e, file, line);
-    } catch (const jau::IndexOutOfBoundsException &e) {
+    } catch (const jau::NullPointerException &e) {
+        jau::jni::raise_java_exception(env, e, file, line);
+    } catch (const jau::RuntimeExceptionBase &e) {
         jau::jni::raise_java_exception(env, e, file, line);
-    } catch (const jau::RuntimeException &e) {
+    } catch (const jau::LogicErrorBase &e) {
         jau::jni::raise_java_exception(env, e, file, line);
     } catch (const std::runtime_error &e) {
         jau::jni::raise_java_exception(env, e, file, line);
@@ -326,7 +334,7 @@ bool jau::jni::from_jboolean_to_bool(jboolean val)
 
 std::string jau::jni::from_jstring_to_string(JNIEnv *env, jstring jstr) {
     if (!jstr) {
-        throw jau::IllegalArgumentException("String argument should not be null", E_FILE_LINE);
+        throw jau::IllegalArgumentError("String argument should not be null", E_FILE_LINE);
     }
     const char *str_chars = (char *)env->GetStringUTFChars(jstr, nullptr);
     if (!str_chars) {
@@ -343,7 +351,7 @@ jstring jau::jni::from_string_to_jstring(JNIEnv *env, const std::string & str) {
 
 jau::io::secure_string jau::jni::from_jbytebuffer_to_sstring(JNIEnv *env, jobject jbytebuffer) {
     if (!jbytebuffer) {
-        throw jau::IllegalArgumentException("ByteBuffer argument should not be null", E_FILE_LINE);
+        throw jau::IllegalArgumentError("ByteBuffer argument should not be null", E_FILE_LINE);
     }
     const char* address = (const char*)env->GetDirectBufferAddress(jbytebuffer);
     size_t capacity = (size_t)env->GetDirectBufferCapacity(jbytebuffer);
@@ -466,7 +474,7 @@ std::vector<std::string> jau::jni::convert_jlist_string_to_vector(JNIEnv *env, j
 // C++ java_anon implementation
 //
 
-jau::jni::JavaGlobalObj::~JavaGlobalObj() noexcept {
+jau::jni::JavaGlobalObj::~JavaGlobalObj() noexcept { // NOLINT(bugprone-exception-escape): handled
     try {
         JNIEnv *env = *jni_env;
         if( nullptr == env ) {
diff --git a/java_jni/jni/jau/ByteInStream_Feed.cxx b/java_jni/jni/jau/ByteInStream_Feed.cxx
index eab710c..03f806c 100644
--- a/java_jni/jni/jau/ByteInStream_Feed.cxx
+++ b/java_jni/jni/jau/ByteInStream_Feed.cxx
@@ -169,11 +169,11 @@ jint Java_org_jau_io_ByteInStream_1Feed_read(JNIEnv *env, jobject obj, jbyteArra
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_Feed> ref(env, obj); // hold until done
 
         if( nullptr == jout ) {
-            throw jau::IllegalArgumentException("out buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer null", E_FILE_LINE);
         }
         const size_t in_size = env->GetArrayLength(jout);
         if( (size_t)joffset + (size_t)jlength > in_size ) {
-            throw jau::IllegalArgumentException("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
+            throw jau::IllegalArgumentError("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
         }
         jau::jni::JNICriticalArray<uint8_t, jbyteArray> criticalArray(env); // RAII - release
         uint8_t * out_ptr = criticalArray.get(jout, criticalArray.Mode::UPDATE_AND_RELEASE);
@@ -192,12 +192,12 @@ jint Java_org_jau_io_ByteInStream_1Feed_read2Impl(JNIEnv *env, jobject obj, jobj
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_Feed> ref(env, obj); // hold until done
 
         if( nullptr == jout ) {
-            throw jau::IllegalArgumentException("out buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer null", E_FILE_LINE);
         }
         const jlong out_cap = env->GetDirectBufferCapacity(jout);
         uint8_t * out_ptr = static_cast<uint8_t *>( env->GetDirectBufferAddress(jout) );
         if( 0 > out_cap || nullptr == out_ptr ) {
-            throw jau::IllegalArgumentException("out buffer access failure", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer access failure", E_FILE_LINE);
         }
         return (jint) ref->read(out_ptr + out_offset, out_cap - out_offset);
     } catch(...) {
@@ -211,11 +211,11 @@ jint Java_org_jau_io_ByteInStream_1Feed_peek(JNIEnv *env, jobject obj, jbyteArra
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_Feed> ref(env, obj); // hold until done
 
         if( nullptr == jout ) {
-            throw jau::IllegalArgumentException("out buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer null", E_FILE_LINE);
         }
         const size_t in_size = env->GetArrayLength(jout);
         if( (size_t)joffset + (size_t)jlength > in_size ) {
-            throw jau::IllegalArgumentException("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
+            throw jau::IllegalArgumentError("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
         }
         jau::jni::JNICriticalArray<uint8_t, jbyteArray> criticalArray(env); // RAII - release
         uint8_t * out_ptr = criticalArray.get(jout, criticalArray.Mode::UPDATE_AND_RELEASE);
@@ -296,11 +296,11 @@ jboolean Java_org_jau_io_ByteInStream_1Feed_write0Impl(JNIEnv *env, jobject obj,
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_Feed> ref(env, obj); // hold until done
 
         if( nullptr == jin ) {
-            throw jau::IllegalArgumentException("address null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("address null", E_FILE_LINE);
         }
         const size_t in_size = env->GetArrayLength(jin);
         if( (size_t)joffset + (size_t)jlength > in_size ) {
-            throw jau::IllegalArgumentException("input byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
+            throw jau::IllegalArgumentError("input byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
         }
         jau::jni::JNICriticalArray<uint8_t, jbyteArray> criticalArray(env); // RAII - release
         uint8_t * in_ptr = criticalArray.get(jin, criticalArray.Mode::NO_UPDATE_AND_RELEASE);
@@ -320,11 +320,11 @@ jboolean Java_org_jau_io_ByteInStream_1Feed_write1Impl(JNIEnv *env, jobject obj,
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_Feed> ref(env, obj); // hold until done
 
         if( nullptr == jin ) {
-            throw jau::IllegalArgumentException("address null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("address null", E_FILE_LINE);
         }
         const size_t in_size = env->GetArrayLength(jin);
         if( (size_t)joffset + (size_t)jlength > in_size ) {
-            throw jau::IllegalArgumentException("input byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
+            throw jau::IllegalArgumentError("input byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
         }
         jau::jni::JNICriticalArray<uint8_t, jbyteArray> criticalArray(env); // RAII - release
         uint8_t * in_ptr = criticalArray.get(jin, criticalArray.Mode::NO_UPDATE_AND_RELEASE);
@@ -343,11 +343,11 @@ jboolean Java_org_jau_io_ByteInStream_1Feed_write2Impl(JNIEnv *env, jobject obj,
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_Feed> ref(env, obj); // hold until done
 
         if( nullptr == jout ) {
-            throw jau::IllegalArgumentException("out buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer null", E_FILE_LINE);
         }
         uint8_t * out_ptr = static_cast<uint8_t *>( env->GetDirectBufferAddress(jout) );
         if( nullptr == out_ptr ) {
-            throw jau::IllegalArgumentException("out buffer access failure", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer access failure", E_FILE_LINE);
         }
         return ref->write(out_ptr + out_offset, out_limit - out_offset) ? JNI_TRUE : JNI_FALSE;
     } catch(...) {
diff --git a/java_jni/jni/jau/ByteInStream_File.cxx b/java_jni/jni/jau/ByteInStream_File.cxx
index e0ba463..420fb29 100644
--- a/java_jni/jni/jau/ByteInStream_File.cxx
+++ b/java_jni/jni/jau/ByteInStream_File.cxx
@@ -223,11 +223,11 @@ jint Java_org_jau_io_ByteInStream_1File_read(JNIEnv *env, jobject obj, jbyteArra
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_File> ref(env, obj); // hold until done
 
         if( nullptr == jout ) {
-            throw jau::IllegalArgumentException("out buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer null", E_FILE_LINE);
         }
         const size_t in_size = env->GetArrayLength(jout);
         if( (size_t)joffset + (size_t)jlength > in_size ) {
-            throw jau::IllegalArgumentException("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
+            throw jau::IllegalArgumentError("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
         }
         jau::jni::JNICriticalArray<uint8_t, jbyteArray> criticalArray(env); // RAII - release
         uint8_t * out_ptr = criticalArray.get(jout, criticalArray.Mode::UPDATE_AND_RELEASE);
@@ -246,12 +246,12 @@ jint Java_org_jau_io_ByteInStream_1File_read2Impl(JNIEnv *env, jobject obj, jobj
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_File> ref(env, obj); // hold until done
 
         if( nullptr == jout ) {
-            throw jau::IllegalArgumentException("out buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer null", E_FILE_LINE);
         }
         const jlong out_cap = env->GetDirectBufferCapacity(jout);
         uint8_t * out_ptr = static_cast<uint8_t *>( env->GetDirectBufferAddress(jout) );
         if( 0 > out_cap || nullptr == out_ptr ) {
-            throw jau::IllegalArgumentException("out buffer access failure", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer access failure", E_FILE_LINE);
         }
         return (jint) ref->read(out_ptr + out_offset, out_cap - out_offset);
     } catch(...) {
@@ -265,11 +265,11 @@ jint Java_org_jau_io_ByteInStream_1File_peek(JNIEnv *env, jobject obj, jbyteArra
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_File> ref(env, obj); // hold until done
 
         if( nullptr == jout ) {
-            throw jau::IllegalArgumentException("out buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer null", E_FILE_LINE);
         }
         const size_t in_size = env->GetArrayLength(jout);
         if( (size_t)joffset + (size_t)jlength > in_size ) {
-            throw jau::IllegalArgumentException("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
+            throw jau::IllegalArgumentError("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
         }
         jau::jni::JNICriticalArray<uint8_t, jbyteArray> criticalArray(env); // RAII - release
         uint8_t * out_ptr = criticalArray.get(jout, criticalArray.Mode::UPDATE_AND_RELEASE);
diff --git a/java_jni/jni/jau/ByteInStream_URL.cxx b/java_jni/jni/jau/ByteInStream_URL.cxx
index f0e7297..73dd540 100644
--- a/java_jni/jni/jau/ByteInStream_URL.cxx
+++ b/java_jni/jni/jau/ByteInStream_URL.cxx
@@ -169,11 +169,11 @@ jint Java_org_jau_io_ByteInStream_1URL_read(JNIEnv *env, jobject obj, jbyteArray
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_URL> ref(env, obj); // hold until done
 
         if( nullptr == jout ) {
-            throw jau::IllegalArgumentException("out buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer null", E_FILE_LINE);
         }
         const size_t in_size = env->GetArrayLength(jout);
         if( (size_t)joffset + (size_t)jlength > in_size ) {
-            throw jau::IllegalArgumentException("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
+            throw jau::IllegalArgumentError("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
         }
         jau::jni::JNICriticalArray<uint8_t, jbyteArray> criticalArray(env); // RAII - release
         uint8_t * out_ptr = criticalArray.get(jout, criticalArray.Mode::UPDATE_AND_RELEASE);
@@ -192,12 +192,12 @@ jint Java_org_jau_io_ByteInStream_1URL_read2Impl(JNIEnv *env, jobject obj, jobje
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_URL> ref(env, obj); // hold until done
 
         if( nullptr == jout ) {
-            throw jau::IllegalArgumentException("out buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer null", E_FILE_LINE);
         }
         const jlong out_cap = env->GetDirectBufferCapacity(jout);
         uint8_t * out_ptr = static_cast<uint8_t *>( env->GetDirectBufferAddress(jout) );
         if( 0 > out_cap || nullptr == out_ptr ) {
-            throw jau::IllegalArgumentException("out buffer access failure", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer access failure", E_FILE_LINE);
         }
         return (jint) ref->read(out_ptr + out_offset, out_cap - out_offset);
     } catch(...) {
@@ -211,11 +211,11 @@ jint Java_org_jau_io_ByteInStream_1URL_peek(JNIEnv *env, jobject obj, jbyteArray
         jau::jni::shared_ptr_ref<jau::io::ByteInStream_URL> ref(env, obj); // hold until done
 
         if( nullptr == jout ) {
-            throw jau::IllegalArgumentException("out buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("out buffer null", E_FILE_LINE);
         }
         const size_t in_size = env->GetArrayLength(jout);
         if( (size_t)joffset + (size_t)jlength > in_size ) {
-            throw jau::IllegalArgumentException("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
+            throw jau::IllegalArgumentError("output byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
         }
         jau::jni::JNICriticalArray<uint8_t, jbyteArray> criticalArray(env); // RAII - release
         uint8_t * out_ptr = criticalArray.get(jout, criticalArray.Mode::UPDATE_AND_RELEASE);
diff --git a/java_jni/jni/jau/ByteOutStream_File.cxx b/java_jni/jni/jau/ByteOutStream_File.cxx
index 241f7ea..ec885c7 100644
--- a/java_jni/jni/jau/ByteOutStream_File.cxx
+++ b/java_jni/jni/jau/ByteOutStream_File.cxx
@@ -199,11 +199,11 @@ jint Java_org_jau_io_ByteOutStream_1File_write(JNIEnv *env, jobject obj, jbyteAr
         jau::jni::shared_ptr_ref<jau::io::ByteOutStream_File> ref(env, obj); // hold until done
 
         if( nullptr == jin ) {
-            throw jau::IllegalArgumentException("in buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("in buffer null", E_FILE_LINE);
         }
         const size_t in_size = env->GetArrayLength(jin);
         if( (size_t)joffset + (size_t)jlength > in_size ) {
-            throw jau::IllegalArgumentException("input byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
+            throw jau::IllegalArgumentError("input byte size "+std::to_string(in_size)+" < "+std::to_string(joffset)+" + "+std::to_string(jlength), E_FILE_LINE);
         }
         jau::jni::JNICriticalArray<uint8_t, jbyteArray> criticalArray(env); // RAII - release
         uint8_t * in_ptr = criticalArray.get(jin, criticalArray.Mode::NO_UPDATE_AND_RELEASE);
@@ -222,14 +222,14 @@ jint Java_org_jau_io_ByteOutStream_1File_write2Impl(JNIEnv *env, jobject obj, jo
         jau::jni::shared_ptr_ref<jau::io::ByteOutStream_File> ref(env, obj); // hold until done
 
         if( nullptr == jin ) {
-            throw jau::IllegalArgumentException("in buffer null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("in buffer null", E_FILE_LINE);
         }
         if( 0 > in_limit) {
-            throw jau::IllegalArgumentException("invalid negative limit", E_FILE_LINE);
+            throw jau::IllegalArgumentError("invalid negative limit", E_FILE_LINE);
         }
         uint8_t * in_ptr = static_cast<uint8_t *>( env->GetDirectBufferAddress(jin) );
         if( nullptr == in_ptr ) {
-            throw jau::IllegalArgumentException("in buffer access failure", E_FILE_LINE);
+            throw jau::IllegalArgumentError("in buffer access failure", E_FILE_LINE);
         }
         return (jint) ref->write(in_ptr + out_offset, in_limit - out_offset);
     } catch(...) {
diff --git a/java_jni/jni/jau/jau_fs_FileUtil.cxx b/java_jni/jni/jau/jau_fs_FileUtil.cxx
index b92036a..97cea09 100644
--- a/java_jni/jni/jau/jau_fs_FileUtil.cxx
+++ b/java_jni/jni/jau/jau_fs_FileUtil.cxx
@@ -60,7 +60,7 @@ jlong Java_org_jau_fs_FileStats_ctorImpl1(JNIEnv *env, jclass clazz, jstring jpa
     (void)clazz;
     try {
         if( nullptr == jpath ) {
-            throw jau::IllegalArgumentException("path null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("path null", E_FILE_LINE);
         }
         std::string path = jau::jni::from_jstring_to_string(env, jpath);
 
@@ -78,7 +78,7 @@ jlong Java_org_jau_fs_FileStats_ctorImpl2(JNIEnv *env, jclass clazz, jstring jdi
     (void)clazz;
     try {
         if( nullptr == jdirname || nullptr == jbasename ) {
-            throw jau::IllegalArgumentException("path null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("path null", E_FILE_LINE);
         }
         std::string dirname = jau::jni::from_jstring_to_string(env, jdirname);
         std::string basename = jau::jni::from_jstring_to_string(env, jbasename);
diff --git a/java_jni/jni/jau/jau_sys_Clock.cxx b/java_jni/jni/jau/jau_sys_Clock.cxx
index dde56de..5482d52 100644
--- a/java_jni/jni/jau/jau_sys_Clock.cxx
+++ b/java_jni/jni/jau/jau_sys_Clock.cxx
@@ -42,11 +42,11 @@ void Java_org_jau_sys_Clock_getMonotonicTimeImpl(JNIEnv *env, jclass clazz, jlon
     (void)clazz;
     try {
         if( nullptr == jval ) {
-            throw jau::IllegalArgumentException("val null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("val null", E_FILE_LINE);
         }
         const size_t jval_size = env->GetArrayLength(jval);
         if( 2 > jval_size ) {
-            throw jau::IllegalArgumentException("val size "+std::to_string(jval_size)+" < 2", E_FILE_LINE);
+            throw jau::IllegalArgumentError("val size "+std::to_string(jval_size)+" < 2", E_FILE_LINE);
         }
         // Avoid GetPrimitiveArrayCritical(), which occasionally hangs on system call ::clock_gettime()
         struct timespec t { 0, 0 };
@@ -63,11 +63,11 @@ void Java_org_jau_sys_Clock_getWallClockTimeImpl(JNIEnv *env, jclass clazz, jlon
     (void)clazz;
     try {
         if( nullptr == jval ) {
-            throw jau::IllegalArgumentException("val null", E_FILE_LINE);
+            throw jau::IllegalArgumentError("val null", E_FILE_LINE);
         }
         const size_t jval_size = env->GetArrayLength(jval);
         if( 2 > jval_size ) {
-            throw jau::IllegalArgumentException("val size "+std::to_string(jval_size)+" < 2", E_FILE_LINE);
+            throw jau::IllegalArgumentError("val size "+std::to_string(jval_size)+" < 2", E_FILE_LINE);
         }
         // Avoid GetPrimitiveArrayCritical(), which occasionally hangs on system call ::clock_gettime()
         struct timespec t { 0, 0 };
diff --git a/java_jni/jni/jni_mem.cxx b/java_jni/jni/jni_mem.cxx
index 86f53a0..e849ebf 100644
--- a/java_jni/jni/jni_mem.cxx
+++ b/java_jni/jni/jni_mem.cxx
@@ -207,13 +207,13 @@ JNIGlobalRef::~JNIGlobalRef() noexcept {
     } catch (jau::ExceptionBase &e0) {
         if( root_environment::is_terminating() ) {
             if( jau::environment::get().debug ) {
-                fprintf(stderr, "JNIGlobalRef::dtor: Caught at exit %s\n", e0.what());
+                fprintf(stderr, "JNIGlobalRef::dtor: Caught at exit %s\n", e0.whole_message().c_str());
             } else {
                 // Be brief @ exit, as its expected at JVM shutdown
-                fprintf(stderr, "JNIGlobalRef::dtor: Caught at exit %s\n", e0.message().c_str());
+                fprintf(stderr, "JNIGlobalRef::dtor: Caught at exit %s\n", e0.brief_message().c_str());
             }
         } else {
-            fprintf(stderr, "JNIGlobalRef::dtor: Caught %s\n", e0.what());
+            fprintf(stderr, "JNIGlobalRef::dtor: Caught %s\n", e0.whole_message().c_str());
         }
     } catch (std::exception &e) {
         if( root_environment::is_terminating() ) {
@@ -235,7 +235,7 @@ jobjectRefType JNIGlobalRef::getObjectRefType() const noexcept {
         std::unique_lock<std::mutex> lock(mtx);
         return env->GetObjectRefType(object);
     } catch (const jau::ExceptionBase &e) {
-        ERR_PRINT("%s", e.message().c_str());
+        ERR_PRINT("%s", e.brief_message().c_str());
     } catch (...) {
         ERR_PRINT("Unknown exception");
     }
@@ -268,7 +268,7 @@ bool JNIGlobalRef::operator==(const JNIGlobalRef& rhs) const noexcept {
         res = JNI_TRUE == env->IsSameObject(object, rhs.object);
         DBG_JNI_PRINT("JNIGlobalRef::== %d: %p == %p (IsSameObject)", res, object, rhs.object);
     } catch (const jau::ExceptionBase &e) {
-        ERR_PRINT("%s", e.message().c_str());
+        ERR_PRINT("%s", e.brief_message().c_str());
     } catch (...) {
         ERR_PRINT("Unknown exception");
     }
diff --git a/src/basic_types.cpp b/src/basic_types.cpp
index c44c9c6..15d219b 100644
--- a/src/basic_types.cpp
+++ b/src/basic_types.cpp
@@ -247,10 +247,11 @@ std::cv_status jau::wait_for(std::condition_variable& cv, std::unique_lock<std::
     }
 }
 
-jau::ExceptionBase::ExceptionBase(std::string type, std::string const& m, const char* file, int line) noexcept
-: msg_( std::move( type.append(" @ ").append(file).append(":").append(std::to_string(line)).append(": ").append(m) ) ),
+jau::ExceptionBase::ExceptionBase(const std::string &type, std::string const& m, const char* file, int line) noexcept // NOLINT(modernize-pass-by-value)
+: msg_( type ),
   backtrace_( jau::get_backtrace(true /* skip_anon_frames */) )
 {
+    msg_.append(" @ ").append(file).append(":").append(std::to_string(line)).append(": ").append(m);
     what_ = msg_;
     what_.append("\nNative backtrace:\n");
     what_.append(backtrace_);
@@ -310,7 +311,7 @@ uint128dp_t jau::merge_uint128(uint16_t const uuid16, uint128dp_t const & base_u
         std::string msg("uuid16_le_octet_index ");
         msg.append(std::to_string(uuid16_le_octet_index));
         msg.append(", not within [0..14]");
-        throw IllegalArgumentException(msg, E_FILE_LINE);
+        throw IllegalArgumentError(msg, E_FILE_LINE);
     }
     uint128dp_t dest = base_uuid;
 
@@ -345,7 +346,7 @@ uint128dp_t jau::merge_uint128(uint32_t const uuid32, uint128dp_t const & base_u
         std::string msg("uuid32_le_octet_index ");
         msg.append(std::to_string(uuid32_le_octet_index));
         msg.append(", not within [0..12]");
-        throw IllegalArgumentException(msg, E_FILE_LINE);
+        throw IllegalArgumentError(msg, E_FILE_LINE);
     }
     uint128dp_t dest = base_uuid;
 
@@ -636,11 +637,13 @@ bool jau::to_fraction_i64(fraction_i64& result, const std::string & value, const
 
 std::string jau::math::to_string(const jau::math::math_error_t v) noexcept {
     switch(v) {
+        case jau::math::math_error_t::none: return "none";
         case jau::math::math_error_t::invalid: return "invalid";
         case jau::math::math_error_t::div_by_zero: return "div_by_zero";
         case jau::math::math_error_t::overflow: return "overflow";
         case jau::math::math_error_t::underflow: return "underflow";
         case jau::math::math_error_t::inexact: return "inexact";
+        case jau::math::math_error_t::undefined: return "undefined";
     }
-    return "unknown";
+    return "undef";
 }
diff --git a/src/eui48.cpp b/src/eui48.cpp
index 05cc205..8f34385 100644
--- a/src/eui48.cpp
+++ b/src/eui48.cpp
@@ -108,7 +108,7 @@ bool EUI48Sub::scanEUI48Sub(const std::string& str, EUI48Sub& dest, std::string&
 EUI48Sub::EUI48Sub(const std::string& str) {
     std::string errmsg;
     if( !scanEUI48Sub(str, *this, errmsg) ) {
-        throw jau::IllegalArgumentException(errmsg, E_FILE_LINE);
+        throw jau::IllegalArgumentError(errmsg, E_FILE_LINE);
     }
 }
 
@@ -227,7 +227,7 @@ bool EUI48::scanEUI48(const std::string& str, EUI48& dest, std::string& errmsg)
 EUI48::EUI48(const std::string& str) {
     std::string errmsg;
     if( !scanEUI48(str, *this, errmsg) ) {
-        throw jau::IllegalArgumentException(errmsg, E_FILE_LINE);
+        throw jau::IllegalArgumentError(errmsg, E_FILE_LINE);
     }
 }
 
diff --git a/src/uuid.cpp b/src/uuid.cpp
index d30d89f..a9d1f5b 100644
--- a/src/uuid.cpp
+++ b/src/uuid.cpp
@@ -50,7 +50,7 @@ uuid_t::TypeSize uuid_t::toTypeSize(const jau::nsize_t size) {
         case TypeSize::UUID32_SZ: return TypeSize::UUID32_SZ;
         case TypeSize::UUID128_SZ: return TypeSize::UUID128_SZ;
     }
-    throw jau::IllegalArgumentException("Given size "+std::to_string(size)+", not matching uuid16_t, uuid32_t or uuid128_t", E_FILE_LINE);
+    throw jau::IllegalArgumentError("Given size "+std::to_string(size)+", not matching uuid16_t, uuid32_t or uuid128_t", E_FILE_LINE);
 }
 
 std::unique_ptr<uuid_t> uuid_t::create(TypeSize t, uint8_t const * const buffer, lb_endian_t const le_or_be) {
@@ -61,7 +61,7 @@ std::unique_ptr<uuid_t> uuid_t::create(TypeSize t, uint8_t const * const buffer,
     } else if( TypeSize::UUID128_SZ == t ) {
         return std::make_unique<uuid128_t>(buffer, le_or_be);
     }
-    throw jau::IllegalArgumentException("Unknown Type "+std::to_string(static_cast<jau::nsize_t>(t)), E_FILE_LINE);
+    throw jau::IllegalArgumentError("Unknown Type "+std::to_string(static_cast<jau::nsize_t>(t)), E_FILE_LINE);
 }
 std::unique_ptr<uuid_t> uuid_t::create(const std::string& str) {
     const size_t len = str.length();
@@ -76,7 +76,7 @@ std::unique_ptr<uuid_t> uuid_t::create(const std::string& str) {
             std::string msg("UUID string not of length 4, 8 or 36 but ");
             msg.append(std::to_string(str.length()));
             msg.append(": "+str);
-            throw jau::IllegalArgumentException(msg, E_FILE_LINE);
+            throw jau::IllegalArgumentError(msg, E_FILE_LINE);
         }
     }
 }
@@ -224,11 +224,11 @@ uuid16_t::uuid16_t(const std::string& str)
         std::string msg("UUID16 string not of length 4 but ");
         msg.append(std::to_string(str.length()));
         msg.append(": "+str);
-        throw jau::IllegalArgumentException(msg, E_FILE_LINE);
+        throw jau::IllegalArgumentError(msg, E_FILE_LINE);
     }
     if ( sscanf(str.c_str(), "%04hx", &part0) != 1 ) {
         std::string msg("UUID16 string not in format '0000' but "+str);
-        throw jau::IllegalArgumentException(msg, E_FILE_LINE);
+        throw jau::IllegalArgumentError(msg, E_FILE_LINE);
     }
     // sscanf provided host data type, in which we store the values,
     // hence no endian conversion
@@ -244,12 +244,12 @@ uuid32_t::uuid32_t(const std::string& str)
         std::string msg("UUID32 string not of length 8 but ");
         msg.append(std::to_string(str.length()));
         msg.append(": "+str);
-        throw jau::IllegalArgumentException(msg, E_FILE_LINE);
+        throw jau::IllegalArgumentError(msg, E_FILE_LINE);
     }
     // if ( sscanf(str.c_str(), "%08x-%04hx-%04hx-%04hx-%08x%04hx",
     if ( sscanf(str.c_str(), "%08x", &part0) != 1 ) {
         std::string msg("UUID32 string not in format '00000000' but "+str);
-        throw jau::IllegalArgumentException(msg, E_FILE_LINE);
+        throw jau::IllegalArgumentError(msg, E_FILE_LINE);
     }
     // sscanf provided host data type, in which we store the values,
     // hence no endian conversion
@@ -266,13 +266,13 @@ uuid128_t::uuid128_t(const std::string& str)
         std::string msg("UUID128 string not of length 36 but ");
         msg.append(std::to_string(str.length()));
         msg.append(": "+str);
-        throw jau::IllegalArgumentException(msg, E_FILE_LINE);
+        throw jau::IllegalArgumentError(msg, E_FILE_LINE);
     }
     if ( sscanf(str.c_str(), "%08x-%04hx-%04hx-%04hx-%08x%04hx",
                      &part0, &part1, &part2, &part3, &part4, &part5) != 6 )
     {
         std::string msg("UUID128 string not in format '00000000-0000-1000-8000-00805F9B34FB' but "+str);
-        throw jau::IllegalArgumentException(msg, E_FILE_LINE);
+        throw jau::IllegalArgumentError(msg, E_FILE_LINE);
     }
 
     // sscanf provided host data type, in which we store the values,
diff --git a/test/test_big_int01.hpp b/test/test_big_int01.hpp
index 0c767dd..e229890 100644
--- a/test/test_big_int01.hpp
+++ b/test/test_big_int01.hpp
@@ -255,7 +255,7 @@ TEST_CASE( "MP Big Int Dec Test 11", "[big_int_t][inout][math]" ) {
         }
     }
 }
-TEST_CASE( "MP Big Int Error Handling Test 88", "[big_int_t][error][arithmetic][math]" ) {
+TEST_CASE( "MP Big Int Error Handling Test 88", "[big_int_t][exceptions][error][arithmetic][math]" ) {
     {
         BigInt a = 1, b = 0, r;
         REQUIRE_THROWS_MATCHES( r = a / b, jau::math::MathDivByZeroError, Catch::Matchers::ContainsSubstring("div_by_zero") );
diff --git a/test/test_exceptions01.cpp b/test/test_exceptions01.cpp
new file mode 100644
index 0000000..bd4d8fd
--- /dev/null
+++ b/test/test_exceptions01.cpp
@@ -0,0 +1,264 @@
+/*
+ * Author: Sven Gothel <[email protected]>
+ * Copyright (c) 2024 Gothel Software e.K.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <cstring>
+#include <exception>
+#include <stdexcept>
+#include <system_error>
+
+#include <jau/test/catch2_ext.hpp>
+
+#include <jau/basic_types.hpp>
+#include <jau/math/math_error.hpp>
+#include <jau/mp/big_int.hpp>
+
+using namespace jau;
+
+static void throwOutOfMemoryError() {
+    throw jau::OutOfMemoryError("test", E_FILE_LINE);
+}
+static void throwRuntimeException() {
+    throw jau::RuntimeException("test", E_FILE_LINE);
+}
+static void throwLogicError() {
+    throw jau::LogicError("test", E_FILE_LINE);
+}
+static void throwIndexOutOfBoundsError() {
+    throw jau::IndexOutOfBoundsError(10, 0, E_FILE_LINE);
+}
+static void throwIllegalArgumentError() {
+    throw jau::IllegalArgumentError("test", E_FILE_LINE);
+}
+static void throwIllegalStateError() {
+    throw jau::IllegalStateError("test", E_FILE_LINE);
+}
+static void throwRuntimeSystemException() {
+    throw jau::RuntimeSystemException(std::error_code(), "test", E_FILE_LINE);
+}
+static void throwIOError() {
+    throw jau::IOError("test", E_FILE_LINE);
+}
+static void throwInternalError() {
+    throw jau::InternalError("test", E_FILE_LINE);
+}
+static void throwNotImplementedException() {
+    throw jau::NotImplementedException("test", E_FILE_LINE);
+}
+static void throwNullPointerException() {
+    throw jau::NullPointerException("test", E_FILE_LINE);
+}
+static void throwUnsupportedOperationException() {
+    throw jau::UnsupportedOperationException("test", E_FILE_LINE);
+}
+
+TEST_CASE( "Exception 00", "[exceptions][error]" ) {
+    static_assert( true == std::is_base_of_v<jau::ExceptionBase, jau::OutOfMemoryError>);
+    static_assert( true == std::is_base_of_v<std::bad_alloc, jau::OutOfMemoryError>);
+    static_assert( true == std::is_base_of_v<std::exception, jau::OutOfMemoryError>);
+    REQUIRE_THROWS_MATCHES( throwOutOfMemoryError(), jau::OutOfMemoryError, Catch::Matchers::ContainsSubstring("OutOfMemoryError") );
+    REQUIRE_THROWS_AS(      throwOutOfMemoryError(), jau::ExceptionBase);
+    REQUIRE_THROWS_AS(      throwOutOfMemoryError(), std::bad_alloc);
+    REQUIRE_THROWS_AS(      throwOutOfMemoryError(), std::exception);
+    
+    static_assert( true == std::is_base_of_v<jau::ExceptionBase, jau::RuntimeExceptionBase>);
+    static_assert( true == std::is_base_of_v<jau::RuntimeExceptionBase, jau::RuntimeException>);
+    static_assert( true == std::is_base_of_v<std::runtime_error, jau::RuntimeException>);
+    static_assert( true == std::is_base_of_v<std::exception, jau::RuntimeException>);
+    REQUIRE_THROWS_MATCHES( throwRuntimeException(), jau::RuntimeException, Catch::Matchers::ContainsSubstring("RuntimeException") );
+    REQUIRE_THROWS_AS(      throwRuntimeException(), jau::RuntimeExceptionBase);
+    REQUIRE_THROWS_AS(      throwRuntimeException(), std::runtime_error);
+    REQUIRE_THROWS_AS(      throwRuntimeException(), std::exception);
+    
+    static_assert( true == std::is_base_of_v<jau::ExceptionBase, jau::LogicErrorBase>);
+    static_assert( true == std::is_base_of_v<jau::LogicErrorBase, jau::LogicError>);
+    static_assert( true == std::is_base_of_v<std::logic_error, jau::LogicError>);
+    static_assert( true == std::is_base_of_v<std::exception, jau::LogicError>);
+    REQUIRE_THROWS_MATCHES( throwLogicError(), jau::LogicError, Catch::Matchers::ContainsSubstring("LogicError") );
+    REQUIRE_THROWS_AS(      throwLogicError(), jau::LogicErrorBase);
+    REQUIRE_THROWS_AS(      throwLogicError(), std::logic_error);
+    REQUIRE_THROWS_AS(      throwLogicError(), std::exception);
+    
+    static_assert( true == std::is_base_of_v<std::out_of_range, jau::IndexOutOfBoundsError>);
+    static_assert( true == std::is_base_of_v<jau::LogicErrorBase, jau::IndexOutOfBoundsError>);
+    static_assert( true == std::is_base_of_v<std::logic_error, jau::IndexOutOfBoundsError>);
+    REQUIRE_THROWS_MATCHES( throwIndexOutOfBoundsError(), jau::IndexOutOfBoundsError, Catch::Matchers::ContainsSubstring("IndexOutOfBoundsError") );
+    REQUIRE_THROWS_AS(      throwIndexOutOfBoundsError(), std::out_of_range);
+    REQUIRE_THROWS_MATCHES( throwIndexOutOfBoundsError(), jau::LogicErrorBase, Catch::Matchers::ContainsSubstring("IndexOutOfBoundsError") );
+    REQUIRE_THROWS_AS(      throwIndexOutOfBoundsError(), std::logic_error);
+    REQUIRE_THROWS_AS(      throwIndexOutOfBoundsError(), std::exception);  
+    
+    static_assert( true == std::is_base_of_v<std::invalid_argument, jau::IllegalArgumentError>);
+    static_assert( true == std::is_base_of_v<jau::LogicErrorBase, jau::IllegalArgumentError>);
+    static_assert( true == std::is_base_of_v<std::logic_error, jau::IllegalArgumentError>);
+    REQUIRE_THROWS_MATCHES( throwIllegalArgumentError(), jau::IllegalArgumentError, Catch::Matchers::ContainsSubstring("IllegalArgumentError") );
+    REQUIRE_THROWS_AS(      throwIllegalArgumentError(), std::invalid_argument);
+    REQUIRE_THROWS_MATCHES( throwIllegalArgumentError(), jau::LogicErrorBase, Catch::Matchers::ContainsSubstring("IllegalArgumentError") );
+    REQUIRE_THROWS_AS(      throwIllegalArgumentError(), std::logic_error);
+    REQUIRE_THROWS_AS(      throwIllegalArgumentError(), std::exception);
+    
+    static_assert( true == std::is_base_of_v<std::domain_error, jau::IllegalStateError>);
+    static_assert( true == std::is_base_of_v<jau::LogicErrorBase, jau::IllegalStateError>);
+    static_assert( true == std::is_base_of_v<std::logic_error, jau::IllegalStateError>);
+    REQUIRE_THROWS_MATCHES( throwIllegalStateError(), jau::IllegalStateError, Catch::Matchers::ContainsSubstring("IllegalStateError") );
+    REQUIRE_THROWS_AS(      throwIllegalStateError(), std::domain_error);
+    REQUIRE_THROWS_MATCHES( throwIllegalStateError(), jau::LogicErrorBase, Catch::Matchers::ContainsSubstring("IllegalStateError") );
+    REQUIRE_THROWS_AS(      throwIllegalStateError(), std::logic_error);
+    REQUIRE_THROWS_AS(      throwIllegalStateError(), std::exception);
+    
+    static_assert( true == std::is_base_of_v<jau::RuntimeExceptionBase, jau::RuntimeSystemExceptionBase>);
+    static_assert( true == std::is_base_of_v<jau::ExceptionBase, jau::RuntimeSystemExceptionBase>);
+    static_assert( true == std::is_base_of_v<jau::RuntimeSystemExceptionBase, jau::RuntimeSystemException>);
+    static_assert( true == std::is_base_of_v<std::system_error, jau::RuntimeSystemException>);
+    static_assert( true == std::is_base_of_v<std::runtime_error, jau::RuntimeSystemException>);
+    static_assert( true == std::is_base_of_v<std::exception, jau::RuntimeSystemException>);
+    REQUIRE_THROWS_MATCHES( throwRuntimeSystemException(), jau::RuntimeSystemExceptionBase, Catch::Matchers::ContainsSubstring("RuntimeSystemException") );
+    REQUIRE_THROWS_AS(      throwRuntimeSystemException(), std::system_error);
+    REQUIRE_THROWS_MATCHES( throwRuntimeSystemException(), jau::RuntimeExceptionBase, Catch::Matchers::ContainsSubstring("RuntimeSystemException") );
+    REQUIRE_THROWS_AS(      throwRuntimeSystemException(), std::runtime_error);
+    REQUIRE_THROWS_AS(      throwRuntimeSystemException(), std::exception);
+           
+    static_assert( true == std::is_base_of_v<std::ios_base::failure, jau::IOError>);
+    static_assert( true == std::is_base_of_v<jau::RuntimeSystemExceptionBase, jau::IOError>);
+    static_assert( true == std::is_base_of_v<std::system_error, jau::IOError>);
+    static_assert( true == std::is_base_of_v<jau::RuntimeExceptionBase, jau::IOError>);
+    static_assert( true == std::is_base_of_v<std::runtime_error, jau::IOError>);
+    REQUIRE_THROWS_MATCHES( throwIOError(), jau::IOError, Catch::Matchers::ContainsSubstring("IOError") );
+    REQUIRE_THROWS_AS( throwIOError(), std::ios_base::failure );
+    REQUIRE_THROWS_MATCHES( throwIOError(), jau::RuntimeSystemExceptionBase, Catch::Matchers::ContainsSubstring("IOError") );
+    REQUIRE_THROWS_AS( throwIOError(), std::system_error);
+    REQUIRE_THROWS_MATCHES( throwIOError(), jau::RuntimeExceptionBase, Catch::Matchers::ContainsSubstring("IOError") );
+    REQUIRE_THROWS_AS( throwIOError(), std::runtime_error );
+    REQUIRE_THROWS_AS( throwIOError(), std::exception );
+    
+    REQUIRE_THROWS_MATCHES( throwInternalError(), jau::RuntimeExceptionBase, Catch::Matchers::ContainsSubstring("InternalError") );
+    REQUIRE_THROWS_AS( throwInternalError(), std::runtime_error );
+    REQUIRE_THROWS_MATCHES( throwInternalError(), jau::InternalError, Catch::Matchers::ContainsSubstring("InternalError") );
+    REQUIRE_THROWS_AS( throwInternalError(), std::exception );
+    
+    REQUIRE_THROWS_MATCHES( throwNotImplementedException(), jau::RuntimeExceptionBase, Catch::Matchers::ContainsSubstring("NotImplementedException") );
+    REQUIRE_THROWS_AS( throwNotImplementedException(), std::runtime_error );
+    REQUIRE_THROWS_MATCHES( throwNotImplementedException(), jau::NotImplementedException, Catch::Matchers::ContainsSubstring("NotImplementedException") );
+    REQUIRE_THROWS_AS( throwNotImplementedException(), std::exception );
+    
+    REQUIRE_THROWS_MATCHES( throwNullPointerException(), jau::RuntimeExceptionBase, Catch::Matchers::ContainsSubstring("NullPointerException") );
+    REQUIRE_THROWS_AS( throwNullPointerException(), std::runtime_error );
+    REQUIRE_THROWS_MATCHES( throwNullPointerException(), jau::NullPointerException, Catch::Matchers::ContainsSubstring("NullPointerException") );
+    REQUIRE_THROWS_AS( throwNullPointerException(), std::exception );
+    
+    REQUIRE_THROWS_MATCHES( throwUnsupportedOperationException(), jau::RuntimeExceptionBase, Catch::Matchers::ContainsSubstring("UnsupportedOperationException") );
+    REQUIRE_THROWS_AS( throwUnsupportedOperationException(), std::runtime_error );
+    REQUIRE_THROWS_MATCHES( throwUnsupportedOperationException(), jau::UnsupportedOperationException, Catch::Matchers::ContainsSubstring("UnsupportedOperationException") );
+    REQUIRE_THROWS_AS( throwUnsupportedOperationException(), std::exception );
+}
+
+static void throwMathError() {
+    throw jau::math::MathError(jau::math::math_error_t::undefined, "test", E_FILE_LINE);
+}
+static void throwMathInexactError() {
+    throw jau::math::MathInexactError("test", E_FILE_LINE);
+}
+static void throwMathDomainError() {
+    throw jau::math::MathDomainError("test", E_FILE_LINE);
+}
+static void throwMathDivByZeroError() {
+    throw jau::math::MathDivByZeroError("test", E_FILE_LINE);
+}
+static void throwMathOverflowError() {
+    throw jau::math::MathOverflowError("test", E_FILE_LINE);
+}
+static void throwMathUnderflowError() {
+    throw jau::math::MathUnderflowError("test", E_FILE_LINE);
+}
+
+TEST_CASE( "Exception 10 Math", "[big_int_t][exceptions][error][math]" ) {
+    // MathError
+    static_assert( true == std::is_base_of_v<jau::math::MathErrorBase, jau::math::MathError>);
+    static_assert( true == std::is_base_of_v<std::exception, jau::math::MathError>);
+    REQUIRE_THROWS_MATCHES( throwMathError(), jau::math::MathErrorBase, Catch::Matchers::ContainsSubstring("MathError(undefined)") );
+    REQUIRE_THROWS_AS(      throwMathError(), std::exception);
+    
+    static_assert( true == std::is_base_of_v<jau::math::MathRuntimeErrorBase, jau::math::MathInexactError>);
+    static_assert( true == std::is_base_of_v<jau::math::MathErrorBase, jau::math::MathInexactError>);
+    static_assert( true == std::is_base_of_v<std::runtime_error, jau::math::MathInexactError>);
+    static_assert( true == std::is_base_of_v<std::exception, jau::math::MathInexactError>);
+    REQUIRE_THROWS_MATCHES( throwMathInexactError(), jau::math::MathInexactError, Catch::Matchers::ContainsSubstring("MathError(inexact)") );
+    REQUIRE_THROWS_AS(      throwMathInexactError(), jau::math::MathRuntimeErrorBase);
+    REQUIRE_THROWS_AS(      throwMathInexactError(), jau::math::MathErrorBase);
+    REQUIRE_THROWS_AS(      throwMathInexactError(), std::runtime_error);
+    REQUIRE_THROWS_AS(      throwMathInexactError(), std::exception);
+    
+    static_assert( true == std::is_base_of_v<jau::math::MathRuntimeErrorBase, jau::math::MathOverflowError>);
+    static_assert( true == std::is_base_of_v<jau::math::MathErrorBase, jau::math::MathOverflowError>);
+    static_assert( true == std::is_base_of_v<std::overflow_error, jau::math::MathOverflowError>);
+    static_assert( true == std::is_base_of_v<std::runtime_error, jau::math::MathOverflowError>);
+    static_assert( true == std::is_base_of_v<std::exception, jau::math::MathOverflowError>);
+    REQUIRE_THROWS_MATCHES( throwMathOverflowError(), jau::math::MathOverflowError, Catch::Matchers::ContainsSubstring("MathError(overflow)") );
+    REQUIRE_THROWS_AS(      throwMathOverflowError(), jau::math::MathRuntimeErrorBase);
+    REQUIRE_THROWS_AS(      throwMathOverflowError(), jau::math::MathErrorBase);
+    REQUIRE_THROWS_AS(      throwMathOverflowError(), std::overflow_error);
+    REQUIRE_THROWS_AS(      throwMathOverflowError(), std::runtime_error);
+    REQUIRE_THROWS_AS(      throwMathOverflowError(), std::exception);
+    
+    static_assert( true == std::is_base_of_v<jau::math::MathRuntimeErrorBase, jau::math::MathUnderflowError>);
+    static_assert( true == std::is_base_of_v<jau::math::MathErrorBase, jau::math::MathUnderflowError>);
+    static_assert( true == std::is_base_of_v<std::underflow_error, jau::math::MathUnderflowError>);
+    static_assert( true == std::is_base_of_v<std::runtime_error, jau::math::MathUnderflowError>);
+    static_assert( true == std::is_base_of_v<std::exception, jau::math::MathUnderflowError>);
+    REQUIRE_THROWS_MATCHES( throwMathUnderflowError(), jau::math::MathUnderflowError, Catch::Matchers::ContainsSubstring("MathError(underflow)") );
+    REQUIRE_THROWS_AS(      throwMathUnderflowError(), jau::math::MathRuntimeErrorBase);
+    REQUIRE_THROWS_AS(      throwMathUnderflowError(), jau::math::MathErrorBase);
+    REQUIRE_THROWS_AS(      throwMathUnderflowError(), std::underflow_error);
+    REQUIRE_THROWS_AS(      throwMathUnderflowError(), std::runtime_error);
+    REQUIRE_THROWS_AS(      throwMathUnderflowError(), std::exception);
+
+    static_assert( true == std::is_base_of_v<jau::math::MathErrorBase, jau::math::MathDomainError>);
+    static_assert( true == std::is_base_of_v<std::domain_error, jau::math::MathDomainError>);
+    static_assert( true == std::is_base_of_v<std::exception, jau::math::MathDomainError>);
+    REQUIRE_THROWS_MATCHES( throwMathDomainError(), jau::math::MathDomainError, Catch::Matchers::ContainsSubstring("MathError(invalid)") );
+    REQUIRE_THROWS_AS(      throwMathDomainError(), jau::math::MathErrorBase);
+    REQUIRE_THROWS_AS(      throwMathDomainError(), std::domain_error);
+    REQUIRE_THROWS_AS(      throwMathDomainError(), std::exception);
+    
+    static_assert( true == std::is_base_of_v<jau::math::MathErrorBase, jau::math::MathDivByZeroError>);
+    static_assert( true == std::is_base_of_v<jau::math::MathDomainError, jau::math::MathDivByZeroError>);
+    static_assert( true == std::is_base_of_v<std::domain_error, jau::math::MathDivByZeroError>);
+    static_assert( true == std::is_base_of_v<std::exception, jau::math::MathDivByZeroError>);
+    REQUIRE_THROWS_MATCHES( throwMathDivByZeroError(), jau::math::MathDivByZeroError, Catch::Matchers::ContainsSubstring("MathError(div_by_zero)") );
+    REQUIRE_THROWS_AS(      throwMathDivByZeroError(), jau::math::MathDomainError);
+    REQUIRE_THROWS_AS(      throwMathDivByZeroError(), jau::math::MathErrorBase);
+    REQUIRE_THROWS_AS(      throwMathDivByZeroError(), std::domain_error);
+    REQUIRE_THROWS_AS(      throwMathDivByZeroError(), std::exception);
+    REQUIRE_THROWS_AS(      throwMathDivByZeroError(), std::exception);    
+}
+
+TEST_CASE( "Exception 11 Math", "[big_int_t][exceptions][error][arithmetic][math]" ) {
+    {
+        jau::mp::BigInt a = 1, b = 0, r;
+        REQUIRE_THROWS_MATCHES( r = a / b, jau::math::MathDivByZeroError, Catch::Matchers::ContainsSubstring("div_by_zero") );
+        REQUIRE_THROWS_MATCHES( r = a % b, jau::math::MathDivByZeroError, Catch::Matchers::ContainsSubstring("div_by_zero") );
+    }
+    {
+        jau::mp::BigInt a = jau::mp::BigInt::from_s32(-1), b = jau::mp::BigInt::from_s32(-1), r;
+        REQUIRE_THROWS_MATCHES( r = a % b, jau::math::MathDomainError, Catch::Matchers::ContainsSubstring("invalid") );
+    }
+}