root/lib/libm/arch/i387/s_copysignf.S
/*
 * Written by J.T. Conklin <jtc@NetBSD.org>.
 * Public domain.
 */

#include <machine/asm.h>

/*
 * XXXfvdl split this file.
 */

RCSID("$NetBSD: s_copysignf.S,v 1.7 2011/06/21 21:52:49 joerg Exp $")

#ifdef __x86_64__
.Lneg:
        .long 0x7fffffff
.Lpos:
        .long 0x80000000
#endif

ENTRY(copysignf)
#ifdef __i386__
        movl    8(%esp),%edx
        andl    $0x80000000,%edx
        movl    4(%esp),%eax
        andl    $0x7fffffff,%eax
        orl     %edx,%eax
        movl    %eax,4(%esp)
        flds    4(%esp)
#else
        movss   .Lpos(%rip),%xmm2
        movss   .Lneg(%rip),%xmm3
        pand    %xmm2,%xmm1
        pand    %xmm3,%xmm0
        por     %xmm1,%xmm0
#endif
        ret