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authorPaul Selkirk <paul@psgd.org>2018-03-10 08:10:12 -0500
committerPaul Selkirk <paul@psgd.org>2018-04-19 18:59:01 -0400
commitd5bd7787b214e0c10354c4cdabfcca92abd0aad6 (patch)
tree1a26677e990200a0c5d3b5aea19b1ab7938203d9 /hashsig.c
parenta478fe1230efae768c72b8cdb29e2887e4226312 (diff)
Fix coef4, which was swapping digits
Diffstat (limited to 'hashsig.c')
-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 */