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Differential D7589 Diff 23859 src/secp256k1/src/field_5x52_impl.h

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src/secp256k1/src/field_5x52_impl.h

Show First 20 Lines • Show All 443 Lines • ▼ Show 20 Lines#ifdef VERIFY
r->magnitude = 1; r->magnitude = 1;
r->normalized = 0; r->normalized = 0;
secp256k1_fe_verify(r); secp256k1_fe_verify(r);
#endif #endif
} }
static SECP256K1_INLINE void secp256k1_fe_cmov(secp256k1_fe *r, const secp256k1_fe *a, int flag) { static SECP256K1_INLINE void secp256k1_fe_cmov(secp256k1_fe *r, const secp256k1_fe *a, int flag) {
uint64_t mask0, mask1; uint64_t mask0, mask1;
VG_CHECK_VERIFY(r->n, sizeof(r->n));
mask0 = flag + ~((uint64_t)0); mask0 = flag + ~((uint64_t)0);
mask1 = ~mask0; mask1 = ~mask0;
r->n[0] = (r->n[0] & mask0) | (a->n[0] & mask1); r->n[0] = (r->n[0] & mask0) | (a->n[0] & mask1);
r->n[1] = (r->n[1] & mask0) | (a->n[1] & mask1); r->n[1] = (r->n[1] & mask0) | (a->n[1] & mask1);
r->n[2] = (r->n[2] & mask0) | (a->n[2] & mask1); r->n[2] = (r->n[2] & mask0) | (a->n[2] & mask1);
r->n[3] = (r->n[3] & mask0) | (a->n[3] & mask1); r->n[3] = (r->n[3] & mask0) | (a->n[3] & mask1);
r->n[4] = (r->n[4] & mask0) | (a->n[4] & mask1); r->n[4] = (r->n[4] & mask0) | (a->n[4] & mask1);
#ifdef VERIFY #ifdef VERIFY
if (flag) { if (flag) {
r->magnitude = a->magnitude; r->magnitude = a->magnitude;
r->normalized = a->normalized; r->normalized = a->normalized;
} }
#endif #endif
} }
static SECP256K1_INLINE void secp256k1_fe_storage_cmov(secp256k1_fe_storage *r, const secp256k1_fe_storage *a, int flag) { static SECP256K1_INLINE void secp256k1_fe_storage_cmov(secp256k1_fe_storage *r, const secp256k1_fe_storage *a, int flag) {
uint64_t mask0, mask1; uint64_t mask0, mask1;
VG_CHECK_VERIFY(r->n, sizeof(r->n));
mask0 = flag + ~((uint64_t)0); mask0 = flag + ~((uint64_t)0);
mask1 = ~mask0; mask1 = ~mask0;
r->n[0] = (r->n[0] & mask0) | (a->n[0] & mask1); r->n[0] = (r->n[0] & mask0) | (a->n[0] & mask1);
r->n[1] = (r->n[1] & mask0) | (a->n[1] & mask1); r->n[1] = (r->n[1] & mask0) | (a->n[1] & mask1);
r->n[2] = (r->n[2] & mask0) | (a->n[2] & mask1); r->n[2] = (r->n[2] & mask0) | (a->n[2] & mask1);
r->n[3] = (r->n[3] & mask0) | (a->n[3] & mask1); r->n[3] = (r->n[3] & mask0) | (a->n[3] & mask1);
} }
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