usr/src/lib/libc/sparc/fp/_Q_neg.c

   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
  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 }