diff options
Diffstat (limited to 'src/lib/ffi/ffi_mp.cpp')
| -rw-r--r-- | src/lib/ffi/ffi_mp.cpp | 41 |
1 files changed, 38 insertions, 3 deletions
diff --git a/src/lib/ffi/ffi_mp.cpp b/src/lib/ffi/ffi_mp.cpp index c7854ce9a..38a83e91b 100644 --- a/src/lib/ffi/ffi_mp.cpp +++ b/src/lib/ffi/ffi_mp.cpp @@ -138,17 +138,52 @@ int botan_mp_destroy(botan_mp_t mp) int botan_mp_add(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) { - return BOTAN_FFI_DO(Botan::BigInt, result, res, { res = safe_get(x) + safe_get(y); }); + return BOTAN_FFI_DO(Botan::BigInt, result, res, { + if(result == x) + res += safe_get(y); + else + res = safe_get(x) + safe_get(y); + }); } int botan_mp_sub(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) { - return BOTAN_FFI_DO(Botan::BigInt, result, res, { res = safe_get(x) - safe_get(y); }); + return BOTAN_FFI_DO(Botan::BigInt, result, res, { + if(result == x) + res -= safe_get(y); + else + res = safe_get(x) - safe_get(y); + }); + } + +int botan_mp_add_u32(botan_mp_t result, const botan_mp_t x, uint32_t y) + { + return BOTAN_FFI_DO(Botan::BigInt, result, res, { + if(result == x) + res += static_cast<Botan::word>(y); + else + res = safe_get(x) + static_cast<Botan::word>(y); + }); + } + +int botan_mp_sub_u32(botan_mp_t result, const botan_mp_t x, uint32_t y) + { + return BOTAN_FFI_DO(Botan::BigInt, result, res, { + if(result == x) + res -= static_cast<Botan::word>(y); + else + res = safe_get(x) - static_cast<Botan::word>(y); + }); } int botan_mp_mul(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) { - return BOTAN_FFI_DO(Botan::BigInt, result, res, { res = safe_get(x) * safe_get(y); }); + return BOTAN_FFI_DO(Botan::BigInt, result, res, { + if(result == x) + res *= safe_get(y); + else + res = safe_get(x) * safe_get(y); + }); } int botan_mp_div(botan_mp_t quotient, |