diff options
Diffstat (limited to 'libtommath/bn_mp_div_d.c')
| -rw-r--r-- | libtommath/bn_mp_div_d.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/libtommath/bn_mp_div_d.c b/libtommath/bn_mp_div_d.c index 9997646..0e9dc95 100644 --- a/libtommath/bn_mp_div_d.c +++ b/libtommath/bn_mp_div_d.c @@ -19,10 +19,13 @@ static int s_is_power_of_two(mp_digit b, int *p) { int x; - /* quick out - if (b & (b-1)) isn't zero, b isn't a power of two */ - if ((b == 0) || ((b & (b-1)) != 0)) { + /* fast return if no power of two */ + if ((b & (b-1)) != 0) { return 0; } + + /* This loops gives the wrong result for b==1, + * but this function is never called for those values. */ for (x = 1; x < DIGIT_BIT; x++) { if (b == (((mp_digit)1)<<x)) { *p = x; |