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-rw-r--r--hashsig.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/hashsig.c b/hashsig.c
index 13f20c6..e32358d 100644
--- a/hashsig.c
+++ b/hashsig.c
@@ -284,10 +284,7 @@ static uint8_t coef2(const uint8_t * const S, const size_t i)
/* w = 4 */
static uint8_t coef4(const uint8_t * const S, const size_t i)
{
- uint8_t byte = S[i/2];
- if (i % 2)
- byte >>= 4;
- return byte & 0x0f;
+ return (S[i/2] >> (4 - (4 * (i % 2)))) & 0x0f;
}
/* w = 8 */