mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-04 10:18:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Rename _bsr/_bsf to bsr/bsf

Browse source 
Now that these functions are behind _COSMO_SOURCE there's no reason for
having the ugly underscore anymore. To use these functions, you need to
pass -mcosmo to cosmocc.
This commit is contained in:
Justine Tunney 2024-03-04 17:33:26 -08:00
parent a6baba1b07
commit 8bfd56b59e
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
53 changed files with 110 additions and 93 deletions
Download patch file Download diff file Expand all files Collapse all files

12
libc/intrin/bsf.c
View file

@ -22,7 +22,7 @@
* Returns position of first bit set.
*
* ctz(𝑥) 31^clz(𝑥) clz(𝑥)
* uint32 𝑥 _bsf(𝑥) tzcnt(𝑥) ffs(𝑥) _bsr(𝑥) lzcnt(𝑥)
* uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
* 0x00000000 wut 32 0 wut 32
* 0x00000001 0 0 1 0 31
* 0x80000001 0 0 1 31 0
@ -35,7 +35,7 @@
* @param 𝑥 is a 64-bit integer
* @return number in range 0..63 or undefined if 𝑥 is 0
*/
int(_bsfl)(long x) {
int(bsfl)(long x) {
unsigned l, r;
x &= -x;
l = x | x >> 32;
@ -52,7 +52,7 @@ int(_bsfl)(long x) {
* Returns position of first bit set.
*
* ctz(𝑥) 31^clz(𝑥) clz(𝑥)
* uint32 𝑥 _bsf(𝑥) tzcnt(𝑥) ffs(𝑥) _bsr(𝑥) lzcnt(𝑥)
* uint32 𝑥 bsf(𝑥) tzcnt(𝑥) ffs(𝑥) bsr(𝑥) lzcnt(𝑥)
* 0x00000000 wut 32 0 wut 32
* 0x00000001 0 0 1 0 31
* 0x80000001 0 0 1 31 0
@ -65,8 +65,8 @@ int(_bsfl)(long x) {
* @param x is a 32-bit integer
* @return number in range 0..31 or undefined if 𝑥 is 0
*/
int(_bsf)(int x) {
return _bsf((unsigned)x);
int(bsf)(int x) {
return bsf((unsigned)x);
}
__weak_reference(_bsfl, _bsfll);
__weak_reference(bsfl, bsfll);