mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-22 21:32:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Fix bugs and have emulator emulate itself

Browse source
This commit is contained in:
Justine Tunney 2020-08-31 05:17:31 -07:00
parent 5aabacb361
commit bd29223891
111 changed files with 1283 additions and 2073 deletions
Download patch file Download diff file Expand all files Collapse all files

23
libc/tinymath/scalb.S
View file

@ -20,21 +20,14 @@
#include "libc/macros.h"
.source __FILE__
/ Returns 𝑥 × 2ʸ.
/
/ @param 𝑥 is double passed in %xmm0
/ @param 𝑦 is double passed in %xmm1, which is truncated
/ @return result in %xmm0
/ @see ldexp()
tinymath_scalb:
push %rbp
mov %rsp,%rbp
.profilable
push %rax
movsd %xmm0,(%rsp)
fldl (%rsp)
movsd %xmm1,(%rsp)
fldl (%rsp)
fxch %st(1)
fscale
fstp %st(1)
fstpl (%rsp)
movsd (%rsp),%xmm0
leave
ret
cvttsd2si %xmm1,%edi
jmp tinymath_ldexp
.endfn tinymath_scalb,globl
.alias tinymath_scalb,scalb