path: root/src/math/i386/log1p.s

.global log1p
.type log1p,@function
log1p:
	mov 8(%esp),%eax
	fldln2
	and $0x7fffffff,%eax
	fldl 4(%esp)
	cmp $0x3fd28f00,%eax
	ja 1f
	cmp $0x00100000,%eax
	jb 2f
	fyl2xp1
	ret
1:	fld1
	faddp
	fyl2x
	ret
		# subnormal x, return x with underflow
2:	fnstsw %ax
	and $16,%ax
	jnz 1f
	fsts 4(%esp)
	fstp %st(1)
1:	ret