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

.global modf
.type modf,@function
modf:
	mov 12(%esp),%ecx
	fldl 4(%esp)
	fxam
	fnstsw %ax
	sahf
        jnp 1f
        jc 2f
1:      fld1
        fld %st(1)
1:      fprem
        fnstsw %ax
        sahf
        jp 1b
        fstp %st(1)
        fsubr %st(0),%st(1)
        fxch %st(1)
        fstpl (%ecx)
        ret

2:	fstpl (%ecx)
	mov 4(%ecx),%eax
	and $0x80000000,%eax
	mov %eax,4(%esp)
	flds 4(%esp)
	ret