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Explicitly optimize modulo ops

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Arun Prakash Jana 2018-01-09 00:13:11 +05:30
parent 77fec499cb
commit f6fd15e088
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GPG key ID: A75979F35C080412
1 changed files with 2 additions and 4 deletions
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nnn.c
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@ -384,7 +384,7 @@ xstrlcpy(char *dest, const char *src, size_t n)
s = (ulong *)src; s = (ulong *)src;
d = (ulong *)dest; d = (ulong *)dest;
blocks = n >> _WSHIFT; blocks = n >> _WSHIFT;
n -= (blocks << _WSHIFT); n &= lsize - 1;
while (blocks) { while (blocks) {
*d = *s; *d = *s;
@ -1278,7 +1278,6 @@ coolsize(off_t size)
static const char * const U = "BKMGTPEZY"; static const char * const U = "BKMGTPEZY";
static char size_buf[12]; /* Buffer to hold human readable size */ static char size_buf[12]; /* Buffer to hold human readable size */
static int i; static int i;
static off_t tmp;
static long double rem; static long double rem;
static const double div_2_pow_10 = 1.0 / 1024.0; static const double div_2_pow_10 = 1.0 / 1024.0;
@ -1287,9 +1286,8 @@ coolsize(off_t size)
rem = 0; rem = 0;
while (size > 1024) { while (size > 1024) {
tmp = size; rem = size & (0x3FF); /* 1024 - 1 = 0x3FF */
size >>= 10; size >>= 10;
rem = tmp - (size << 10);
++i; ++i;
} }