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Define fls() in terms of clz32().

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As suggested by Laurent Desnogues.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5872 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-12-04 20:08:06 +00:00
parent f46f15bca7
commit 8d371d4bce
1 changed files with 2 additions and 7 deletions
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9
cutils.c
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@ -22,6 +22,7 @@
* THE SOFTWARE. * THE SOFTWARE.
*/ */
#include "qemu-common.h" #include "qemu-common.h"
#include "host-utils.h"
void pstrcpy(char *buf, int buf_size, const char *str) void pstrcpy(char *buf, int buf_size, const char *str)
{ {
@ -98,11 +99,5 @@ time_t mktimegm(struct tm *tm)
int fls(int i) int fls(int i)
{ {
int bit; return 32 - clz32(i);
for (bit=31; bit >= 0; bit--)
if (i & (1 << bit))
return bit+1;
return 0;
} }