xref: /original-bsd/lib/libc/vax/gen/modf.s (revision 4d072710)
1/*
2 * Copyright (c) 1983 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms are permitted
6 * provided that the above copyright notice and this paragraph are
7 * duplicated in all such forms and that any documentation,
8 * advertising materials, and other materials related to such
9 * distribution and use acknowledge that the software was developed
10 * by the University of California, Berkeley.  The name of the
11 * University may not be used to endorse or promote products derived
12 * from this software without specific prior written permission.
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16 */
17
18#if defined(LIBC_SCCS) && !defined(lint)
19	.asciz "@(#)modf.s	5.4 (Berkeley) 06/27/88"
20#endif /* LIBC_SCCS and not lint */
21
22/*
23 * double modf (value, iptr)
24 * double value, *iptr;
25 *
26 * Modf returns the fractional part of "value",
27 * and stores the integer part indirectly through "iptr".
28 */
29
30#include "DEFS.h"
31
32ENTRY(modf, 0)
33	emodd	4(ap),$0,$0f1.0,r2,r0
34	jvs	1f			# integer overflow
35	cvtld	r2,*12(ap)
36	ret
371:
38	subd3	r0,4(ap),*12(ap)
39	ret
40