diff options
| -rw-r--r-- | include/bigint.h | 4 | ||||
| -rw-r--r-- | src/big_base.cpp | 17 |
2 files changed, 19 insertions, 2 deletions
diff --git a/include/bigint.h b/include/bigint.h index 44382b063..1772f1e51 100644 --- a/include/bigint.h +++ b/include/bigint.h @@ -78,8 +78,8 @@ class BigInt SecureVector<word>& get_reg() { return reg; } void grow_reg(u32bit) const; - word& operator[](u32bit index) { return reg[index]; } - word operator[](u32bit index) const { return reg[index]; } + word& operator[](u32bit); + word operator[](u32bit) const; void clear() { reg.clear(); } void randomize(u32bit = 0); diff --git a/src/big_base.cpp b/src/big_base.cpp index 158d967fb..a6d9e3e9e 100644 --- a/src/big_base.cpp +++ b/src/big_base.cpp @@ -338,6 +338,23 @@ BigInt BigInt::operator-() const } /************************************************* +* Return a reference to the indexed word * +*************************************************/ +word& BigInt::operator[](u32bit index) + { + reg.grow_to(index+1); + return reg[index]; + } + +/************************************************* +* Return the value of the indexed word * +*************************************************/ +word BigInt::operator[](u32bit index) const + { + return (index < size()) ? reg[index] : 0; + } + +/************************************************* * Return the absolute value of this number * *************************************************/ BigInt BigInt::abs() const |