xref: /original-bsd/lib/libc/quad/fixsfdi.c (revision 860e07fc)
1 /*-
2  * Copyright (c) 1992 The Regents of the University of California.
3  * All rights reserved.
4  *
5  * This software was developed by the Computer Systems Engineering group
6  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
7  * contributed to Berkeley.
8  *
9  * %sccs.include.redist.c%
10  */
11 
12 #if defined(LIBC_SCCS) && !defined(lint)
13 static char sccsid[] = "@(#)fixsfdi.c	5.1 (Berkeley) 07/07/92";
14 #endif /* LIBC_SCCS and not lint */
15 
16 #include "quad.h"
17 
18 /*
19  * Convert float to (signed) quad.
20  * We clamp anything that is out of range.
21  *
22  * N.B.: must use new ANSI syntax (sorry).
23  */
24 long long
25 __fixsfdi(float x)
26 {
27 	if (x < 0)
28 		if (x <= QUAD_MIN)
29 			return (QUAD_MIN);
30 		else
31 			return ((quad_t)-(u_quad_t)-x);
32 	else
33 		if (x >= QUAD_MAX)
34 			return (QUAD_MAX);
35 		else
36 			return ((quad_t)(u_quad_t)x);
37 }
38