xref: /titanic_44/usr/src/lib/libc/sparc/fp/_Q_neg.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1  /*
2   * CDDL HEADER START
3   *
4   * The contents of this file are subject to the terms of the
5   * Common Development and Distribution License, Version 1.0 only
6   * (the "License").  You may not use this file except in compliance
7   * with the License.
8   *
9   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10   * or http://www.opensolaris.org/os/licensing.
11   * See the License for the specific language governing permissions
12   * and limitations under the License.
13   *
14   * When distributing Covered Code, include this CDDL HEADER in each
15   * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16   * If applicable, add the following below this CDDL HEADER, with the
17   * fields enclosed by brackets "[]" replaced with your own identifying
18   * information: Portions Copyright [yyyy] [name of copyright owner]
19   *
20   * CDDL HEADER END
21   */
22  /*
23   * Copyright (c) 1994-1997, by Sun Microsystems, Inc.
24   * All rights reserved.
25   */
26  
27  #pragma ident	"%Z%%M%	%I%	%E% SMI"
28  
29  #include "quad.h"
30  
31  #ifdef __sparcv9
32  
33  /*
34   * _Qp_neg(pz, x) sets *pz = -*x.
35   */
36  void
_Qp_neg(union longdouble * pz,const union longdouble * x)37  _Qp_neg(union longdouble *pz, const union longdouble *x)
38  
39  #else
40  
41  /*
42   * _Q_neg(x) returns -*x.
43   */
44  union longdouble
45  _Q_neg(const union longdouble *x)
46  
47  #endif /* __sparcv9 */
48  
49  {
50  #ifndef __sparcv9
51  	union	longdouble	z;
52  #endif
53  
54  	Z.l.msw = x->l.msw ^ 0x80000000;
55  	Z.l.frac2 = x->l.frac2;
56  	Z.l.frac3 = x->l.frac3;
57  	Z.l.frac4 = x->l.frac4;
58  	QUAD_RETURN(Z);
59  }
60