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HEAD
avoid changing NaNs in sqrt (x86 asm) to satisfy c99 f.9 recommendation
[musl]
/
src
/
math
/
i386
/
sqrt.s
1
.global sqrt
2
.type sqrt,@function
3
sqrt: fldl 4(%esp)
4
fsqrt
5
fstsw %ax
6
sub $12,%esp
7
fld %st(0)
8
fstpt (%esp)
9
mov (%esp),%ecx
10
and $0x7ff,%ecx
11
cmp $0x400,%ecx
12
jnz 1f
13
mov 8(%esp),%ecx
14
or $0xffff8000,%ecx
15
inc %ecx
16
jz 1f
17
and $0x200,%eax
18
sub $0x100,%eax
19
sub %eax,(%esp)
20
fstp %st(0)
21
fldt (%esp)
22
1: add $12,%esp
23
fstpl 4(%esp)
24
fldl 4(%esp)
25
ret