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Get rid of redundant multiplications in bn_div_words.

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This commit is contained in:
Andy Polyakov 1999-07-21 13:53:01 +00:00
parent 5f12fc006e
commit cea538154b
1 changed files with 5 additions and 5 deletions
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10
crypto/bn/bn_asm.c
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@ -266,16 +266,16 @@ BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d)
for (;;) for (;;)
{ {
t=(h-q*dh); t=(h-(th=q*dh));
tl=BN_MASK2;
if ((t&BN_MASK2h) || if ((t&BN_MASK2h) ||
((dl*q) <= ( ((tl=dl*q) <= (
(t<<BN_BITS4)+ (t<<BN_BITS4)|
((l&BN_MASK2h)>>BN_BITS4)))) ((l&BN_MASK2h)>>BN_BITS4))))
break; break;
q--; q--;
} }
th=q*dh; if (tl==BN_MASK2) tl=q*dl;
tl=q*dl;
t=(tl>>BN_BITS4); t=(tl>>BN_BITS4);
tl=(tl<<BN_BITS4)&BN_MASK2h; tl=(tl<<BN_BITS4)&BN_MASK2h;
th+=t; th+=t;