diff options
Diffstat (limited to 'integer.cpp')
| -rw-r--r-- | integer.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/integer.cpp b/integer.cpp index 1771b429..78dd10a1 100644 --- a/integer.cpp +++ b/integer.cpp @@ -4244,7 +4244,9 @@ void Integer::Divide(word &remainder, Integer "ient, const Integer ÷nd if (!divisor)
throw Integer::DivideByZero();
- if ((divisor & (divisor-1)) == 0) // divisor is a power of 2
+ // IsPowerOf2 uses BMI on x86 if available. There is a small
+ // but measurable improvement during decryption and signing.
+ if (IsPowerOf2(divisor))
{
quotient = dividend >> (BitPrecision(divisor)-1);
remainder = dividend.reg[0] & (divisor-1);
|