From 83d95da004c8cc2387a4070b781a71a0c6433faa Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 30 Apr 2016 05:47:05 +0200 Subject: Some optimisations MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/zand.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) (limited to 'src/zand.c') diff --git a/src/zand.c b/src/zand.c index a8f53a6..6d3a184 100644 --- a/src/zand.c +++ b/src/zand.c @@ -2,14 +2,25 @@ #include "internals.h" -static inline O2 void -zand_impl(zahl_char_t *restrict a, const zahl_char_t *restrict b, size_t n) +O2 static inline void +zand_impl_3(register zahl_char_t *restrict a, + register const zahl_char_t *restrict b, size_t n) { size_t i; for (i = 0; i < n; i++) a[i] &= b[i]; } +static inline void +zand_impl_4(register zahl_char_t *restrict a, + register const zahl_char_t *restrict b, + register const zahl_char_t *restrict c, size_t n) +{ + size_t i; + for (i = 0; i < n; i++) + a[i] = b[i] & c[i]; +} + void zand(z_t a, z_t b, z_t c) { @@ -25,13 +36,12 @@ zand(z_t a, z_t b, z_t c) a->used = MIN(b->used, c->used); if (a == b) { - zand_impl(a->chars, c->chars, a->used); + zand_impl_3(a->chars, c->chars, a->used); } else if (unlikely(a == c)) { - zand_impl(a->chars, b->chars, a->used); + zand_impl_3(a->chars, b->chars, a->used); } else { ENSURE_SIZE(a, a->used); - zmemcpy(a->chars, c->chars, a->used); - zand_impl(a->chars, b->chars, a->used); + zand_impl_4(a->chars, b->chars, c->chars, a->used); } TRIM_AND_SIGN(a, zpositive1(b, c) * 2 - 1); -- cgit v1.2.3-70-g09d2