diff options
| author | Mattias Andrée <maandree@kth.se> | 2016-03-13 05:30:01 +0100 |
|---|---|---|
| committer | Mattias Andrée <maandree@kth.se> | 2016-03-13 05:30:01 +0100 |
| commit | f6cb7f3e7382a19a6d6d9990c243ffb8a666182d (patch) | |
| tree | dbf43f976f66a39fd87ffa38d59194b425efaa68 /src/ztrunc.c | |
| parent | Make zabs, zneg and zswap inline (diff) | |
| download | libzahl-f6cb7f3e7382a19a6d6d9990c243ffb8a666182d.tar.gz libzahl-f6cb7f3e7382a19a6d6d9990c243ffb8a666182d.tar.bz2 libzahl-f6cb7f3e7382a19a6d6d9990c243ffb8a666182d.tar.xz | |
Optimisations
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'src/ztrunc.c')
| -rw-r--r-- | src/ztrunc.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/src/ztrunc.c b/src/ztrunc.c index c634707..7dcafd9 100644 --- a/src/ztrunc.c +++ b/src/ztrunc.c @@ -6,9 +6,9 @@ void ztrunc(z_t a, z_t b, size_t bits) { zahl_char_t mask = 1; - size_t chars, i; + size_t chars; - if (zzero(b)) { + if (EXPECT(zzero(b), 0)) { SET_SIGNUM(a, 0); return; } @@ -16,21 +16,20 @@ ztrunc(z_t a, z_t b, size_t bits) chars = CEILING_BITS_TO_CHARS(bits); a->sign = b->sign; a->used = MIN(chars, b->used); - if (a->used < chars) + if (EXPECT(a->used < chars, 0)) bits = 0; - if (a != b) { + if (EXPECT(a != b, 1)) { ENSURE_SIZE(a, a->used); zmemcpy(a->chars, b->chars, a->used); } bits = BITS_IN_LAST_CHAR(bits); - if (bits) { + if (EXPECT(!!bits, 1)) { mask <<= bits; mask -= 1; a->chars[a->used - 1] &= mask; } - for (i = a->used; i--;) - if (a->chars[i]) - return; - SET_SIGNUM(a, 0); + TRIM(a); + if (!a->used) + SET_SIGNUM(a, 0); } |