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acos.s 311 字节
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R
asm for inverse trig functions  
Rich Felker 已提交
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.global acosf
.type acosf,@function
acosf:
	flds 4(%esp)
	jmp 1f

.global acosl
.type acosl,@function
acosl:
	fldt 4(%esp)
	jmp 1f

.global acos
.type acos,@function
acos:
	fldl 4(%esp)
R
use alternate formula for acos asm to avoid loss of precision  
Rich Felker 已提交
17 18 
1:	fld1
	fld %st(1)
R
asm for inverse trig functions  
Rich Felker 已提交
19 
	fld1
R
use alternate formula for acos asm to avoid loss of precision  
Rich Felker 已提交
20 21 22 23 
	fsubp
	fxch %st(2)
	faddp
	fdivp
R
asm for inverse trig functions  
Rich Felker 已提交
24 
	fsqrt
R
use alternate formula for acos asm to avoid loss of precision  
Rich Felker 已提交
25 
	fld1
R
asm for inverse trig functions  
Rich Felker 已提交
26 27 
	fxch %st(1)
	fpatan
R
use alternate formula for acos asm to avoid loss of precision  
Rich Felker 已提交
28 29 30 31 
	fld1
	fld1
	faddp
	fmulp
R
asm for inverse trig functions  
Rich Felker 已提交
32 
	ret