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Abstract out verify logic for fe_negate

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This commit is contained in:
Pieter Wuille
2022-01-28 18:27:38 -05:00
parent 144670893e
commit 65d82a3445
4 changed files with 29 additions and 22 deletions
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11
src/field_impl.h
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@@ -253,6 +253,17 @@ SECP256K1_INLINE static void secp256k1_fe_get_b32(unsigned char *r, const secp25
VERIFY_CHECK(a->normalized);
secp256k1_fe_impl_get_b32(r, a);
}
static void secp256k1_fe_impl_negate(secp256k1_fe *r, const secp256k1_fe *a, int m);
SECP256K1_INLINE static void secp256k1_fe_negate(secp256k1_fe *r, const secp256k1_fe *a, int m) {
secp256k1_fe_verify(a);
VERIFY_CHECK(m >= 0 && m <= 31);
VERIFY_CHECK(a->magnitude <= m);
secp256k1_fe_impl_negate(r, a, m);
r->magnitude = m + 1;
r->normalized = 0;
secp256k1_fe_verify(r);
}
#endif /* defined(VERIFY) */
#endif /* SECP256K1_FIELD_IMPL_H */