diff options
| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2020-11-07 10:39:25 +0200 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2021-01-20 22:06:07 +0200 |
| commit | 807827cda3bacf5f475167ee6d34657713111838 (patch) | |
| tree | 082dac76d33ac3ff94d4deedf9efa142d0359789 /cipher/bithelp.h | |
| parent | 477355047e5c75ad2b2238a8716e4646b861184c (diff) | |
| download | libgcrypt-807827cda3bacf5f475167ee6d34657713111838.tar.gz | |
cipher/bithelp: use __builtin_ctzl when available
* cipher/bithelp.h (_gcry_ctz64): Use __builtin_ctzl if available.
--
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'cipher/bithelp.h')
| -rw-r--r-- | cipher/bithelp.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/cipher/bithelp.h b/cipher/bithelp.h index 26ef7c35..7793ce7c 100644 --- a/cipher/bithelp.h +++ b/cipher/bithelp.h @@ -83,7 +83,7 @@ static inline int _gcry_ctz (unsigned int x) { #if defined (HAVE_BUILTIN_CTZ) - return x? __builtin_ctz (x) : 8 * sizeof (x); + return x ? __builtin_ctz (x) : 8 * sizeof (x); #else /* See * http://graphics.stanford.edu/~seander/bithacks.html#ZerosOnRightModLookup @@ -106,9 +106,11 @@ _gcry_ctz (unsigned int x) static inline int _gcry_ctz64(u64 x) { -#if defined (HAVE_BUILTIN_CTZ) && SIZEOF_UNSIGNED_INT >= 8 +#if defined (HAVE_BUILTIN_CTZL) && SIZEOF_UNSIGNED_LONG >= 8 + return x ? __builtin_ctzl (x) : 8 * sizeof (x); +#elif defined (HAVE_BUILTIN_CTZ) && SIZEOF_UNSIGNED_INT >= 8 #warning hello - return x? __builtin_ctz (x) : 8 * sizeof (x); + return x ? __builtin_ctz (x) : 8 * sizeof (x); #else if ((x & 0xffffffff)) return _gcry_ctz (x); |