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-rw-r--r--src/crypto/curve25519-hacl64.h11
1 files changed, 3 insertions, 8 deletions
diff --git a/src/crypto/curve25519-hacl64.h b/src/crypto/curve25519-hacl64.h
index 4fd95cb..5631cde 100644
--- a/src/crypto/curve25519-hacl64.h
+++ b/src/crypto/curve25519-hacl64.h
@@ -10,14 +10,9 @@
typedef __uint128_t u128;
static __always_inline u64 u64_eq_mask(u64 x, u64 y)
{
- x = ~(x ^ y);
- x &= x << 32;
- x &= x << 16;
- x &= x << 8;
- x &= x << 4;
- x &= x << 2;
- x &= x << 1;
- return ((s64)x) >> 63;
+ x ^= y;
+ x |= -x;
+ return (x >> 63) - 1;
}
static __always_inline u64 u64_gte_mask(u64 x, u64 y)