xref: /freebsd/lib/libc/quad/ucmpdi2.c (revision 264104f26834fdb27974e0c5fdedf8f2f5a90383)
1  /*-
2   * Copyright (c) 1992, 1993
3   *	The Regents of the University of California.  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   * Redistribution and use in source and binary forms, with or without
10   * modification, are permitted provided that the following conditions
11   * are met:
12   * 1. Redistributions of source code must retain the above copyright
13   *    notice, this list of conditions and the following disclaimer.
14   * 2. Redistributions in binary form must reproduce the above copyright
15   *    notice, this list of conditions and the following disclaimer in the
16   *    documentation and/or other materials provided with the distribution.
17   * 3. Neither the name of the University nor the names of its contributors
18   *    may be used to endorse or promote products derived from this software
19   *    without specific prior written permission.
20   *
21   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31   * SUCH DAMAGE.
32   */
33  
34  #if defined(LIBC_SCCS) && !defined(lint)
35  static char sccsid[] = "@(#)ucmpdi2.c	8.1 (Berkeley) 6/4/93";
36  #endif /* LIBC_SCCS and not lint */
37  #include <sys/cdefs.h>
38  __FBSDID("$FreeBSD$");
39  
40  #include "quad.h"
41  
42  /*
43   * Return 0, 1, or 2 as a <, =, > b respectively.
44   * Neither a nor b are considered signed.
45   */
46  int
47  __ucmpdi2(a, b)
48  	u_quad_t a, b;
49  {
50  	union uu aa, bb;
51  
52  	aa.uq = a;
53  	bb.uq = b;
54  	return (aa.ul[H] < bb.ul[H] ? 0 : aa.ul[H] > bb.ul[H] ? 2 :
55  	    aa.ul[L] < bb.ul[L] ? 0 : aa.ul[L] > bb.ul[L] ? 2 : 1);
56  }
57