/* fpopt/ppc_fneg.S, pl_FPE_common, pl_linux 11/24/03 16:17:36                                                                  */
/*----------------------------------------------------------------------------- */
/*  Copyright (c) 2003, IBM Corporation                                         */
/*  All rights reserved.                                                        */
/*                                                                              */
/*  Redistribution and use in source and binary forms, with or                  */
/*  without modification, are permitted provided that the following             */
/*  conditions are met:                                                         */
/*                                                                              */
/*    * Redistributions of source code must retain the above                    */
/*      copyright notice, this list of conditions and the following             */
/*      disclaimer.                                                             */
/*    * Redistributions in binary form must reproduce the above                 */
/*      copyright notice, this list of conditions and the following             */
/*      disclaimer in the documentation and/or other materials                  */
/*      provided with the distribution.                                         */
/*    * Neither the name of IBM nor the names of its contributors               */
/*      may be used to endorse or promote products derived from this            */
/*      software without specific prior written permission.                     */
/*                                                                              */
/*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND                      */
/*  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,                 */
/*  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF                    */
/*  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE                    */
/*  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS           */
/*  BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,         */
/*  OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,                    */
/*  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR          */
/*  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY         */
/*  OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT                */
/*  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE           */
/*  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.    */
/*                                                                              */
/*----------------------------------------------------------------------------- */
/*                                                                              */
/* Function: negate a single or double floating point number                    */
/* Input:    r3, (r4 iff double)                                                */
/* Output:   r3, (r4 iff double)                                                */
/* Notes:   1. No stack frame is created for this function, so the following    */
/*             registers must be preserved, as required by ABI specification:   */
/*               LR, CR0, R1, R2, R13-R31                                       */
/*          2. operation performed according to IEEE754-1985 standard.          */
/*                                                                              */
/*----------------------------------------------------------------------------- */
   
#include <ppc4xx.inc>
   
function_prolog(__negdf2)
function_prolog(__negsf2)

     xoris     r3,r3,0x8000       /* flip sign of first or only arg */
     blr                          /* and return */

function_epilog(__negdf2)
function_epilog(__negsf2)