Signed-off-by: Amitay Isaacs <amitay@ozlabs.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14784)
#ifndef OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H
# define OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H
+# include "internal/constant_time.h"
+
# define ARCH_WORD_BITS 64
-static ossl_inline uint64_t word_is_zero(uint64_t a)
-{
- /* let's hope the compiler isn't clever enough to optimize this. */
- return (((__uint128_t) a) - 1) >> 64;
-}
+# define word_is_zero(a) constant_time_is_zero_64(a)
static ossl_inline uint128_t widemul(uint64_t a, uint64_t b)
{