summaryrefslogtreecommitdiff
path: root/src/math/i386/log1pf.s
blob: c0bcd30f0e6efd46b0b1223d5439097f7bc7febd (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
.global log1pf
.type log1pf,@function
log1pf:
	mov 4(%esp),%eax
	fldln2
	and $0x7fffffff,%eax
	flds 4(%esp)
	cmp $0x3e940000,%eax
	ja 1f
	cmp $0x00800000,%eax
	jb 2f
	fyl2xp1
	ret
1:	fld1
	faddp
	fyl2x
	ret
		# subnormal x, return x with underflow
2:	fnstsw %ax
	and $16,%ax
	jnz 1f
	fxch
	fmul %st(1)
	fstps 4(%esp)
1:	ret