Author: ache
Date: Sun May 29 16:39:28 2016
New Revision: 300965
URL: https://svnweb.freebsd.org/changeset/base/300965
Log:
Micro optimize: C standard guarantees that right shift for unsigned value
fills left bits with zero, and we have exact 32bit unsigned value
(uint32_t), so there is no reason to add "& 0x7fffffff" here.
MFC after: 1 week
Modified:
head/lib/libc/stdlib/random.c
Modified: head/lib/libc/stdlib/random.c
==============================================================================
--- head/lib/libc/stdlib/random.c Sun May 29 16:32:56 2016
(r300964)
+++ head/lib/libc/stdlib/random.c Sun May 29 16:39:28 2016
(r300965)
@@ -430,7 +430,7 @@ random(void)
*/
f = fptr; r = rptr;
*f += *r;
- i = (*f >> 1) & 0x7fffffff; /* chucking least random bit */
+ i = *f >> 1; /* chucking least random bit */
if (++f >= end_ptr) {
f = state;
++r;
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