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Improve readability of f_impl.c and f_impl.h

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Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/5105)
This commit is contained in:
Matt Caswell 2018-02-14 14:35:01 +00:00
parent cb5ed32665
commit 8e32ec7a56
2 changed files with 4 additions and 4 deletions
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2
crypto/ec/curve448/arch_32/f_impl.c
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@ -69,7 +69,7 @@ void gf_mulw_unsigned(gf_s * RESTRICT cs, const gf as, uint32_t b)
uint32_t mask = (1 << 28) - 1;
int i;
assert(b < 1 << 28);
assert(b <= mask);
for (i = 0; i < 8; i++) {
accum0 += widemul(b, a[i]);

6
crypto/ec/curve448/arch_32/f_impl.h
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@ -42,16 +42,16 @@ void gf_bias(gf a, int amt)
uint32_t co1 = ((1 << 28) - 1) * amt, co2 = co1 - amt;
for (i = 0; i < NLIMBS; i++)
a->limb[i] += (i == sizeof(*a) / sizeof(a->limb[0]) / 2) ? co2 : co1;
a->limb[i] += (i == NLIMBS / 2) ? co2 : co1;
}
void gf_weak_reduce(gf a)
{
uint32_t mask = (1 << 28) - 1;
uint32_t tmp = a->limb[15] >> 28;
uint32_t tmp = a->limb[NLIMBS - 1] >> 28;
unsigned int i;
a->limb[8] += tmp;
a->limb[NLIMBS / 2] += tmp;
for (i = 15; i > 0; i--)
a->limb[i] = (a->limb[i] & mask) + (a->limb[i - 1] >> 28);
a->limb[0] = (a->limb[0] & mask) + tmp;