usr/src/lib/libc/vax/gen/modf.s

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
        .asciz "@(#)modf.s      5.4 (Berkeley) %G%"
#endif /* LIBC_SCCS and not lint */

/*
 * double modf (value, iptr)
 * double value, *iptr;
 *
 * Modf returns the fractional part of "value",
 * and stores the integer part indirectly through "iptr".
 */

#include "DEFS.h"

ENTRY(modf, 0)
        emodd   4(ap),$0,$0f1.0,r2,r0
        jvs     1f                      # integer overflow
        cvtld   r2,*12(ap)
        ret
1:
        subd3   r0,4(ap),*12(ap)
        ret