forked from KolibriOS/kolibrios
21 lines
230 B
ArmAsm
21 lines
230 B
ArmAsm
|
#include<libc/asm.h>
|
||
|
|
MK_C_SYM(tan)
|
||
|
|
fldl 4(%esp)
|
||
|
|
fptan
|
||
|
|
fnstsw %ax
|
||
|
|
andw $0x400,%ax
|
||
|
|
jnz 1f
|
||
|
|
fstp %st(0)
|
||
|
|
ret
|
||
|
|
1: fldpi
|
||
|
|
fadd %st(0)
|
||
|
|
fxch %st(1)
|
||
|
|
2: fprem1
|
||
|
|
fstsw %ax
|
||
|
|
andw $0x400,%ax
|
||
|
|
jnz 2b
|
||
|
|
fstp %st(1)
|
||
|
|
fptan
|
||
|
|
fstp %st(0)
|
||
|
|
ret
|