newlib/libm/machine/amdgcn/v64df_copysign.c

   1 /*
   2  * Copyright 2023 Siemens
   3  *
   4  * The authors hereby grant permission to use, copy, modify, distribute,
   5  * and license this software and its documentation for any purpose, provided
   6  * that existing copyright notices are retained in all copies and that this
   7  * notice is included verbatim in any distributions.  No written agreement,
   8  * license, or royalty fee is required for any of the authorized uses.
   9  * Modifications to this software may be copyrighted by their authors
  10  * and need not follow the licensing terms described here, provided that
  11  * the new terms are clearly indicated on the first page of each file where
  12  * they apply.
  13  */
  14
  15 /*
  16  * ====================================================
  17  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
  18  *
  19  * Developed at SunPro, a Sun Microsystems, Inc. business.
  20  * Permission to use, copy, modify, and distribute this
  21  * software is freely granted, provided that this notice
  22  * is preserved.
  23  * ====================================================
  24  */
  25
  26 /* Based on newlib/libm/common/s_copysign.c in Newlib.  */
  27
  28 #include "amdgcnmach.h"
  29
  30 DEF_VD_MATH_FUNC (v64df, copysign, v64df x, v64df y)
  31 {
  32   FUNCTION_INIT (v64df);
  33
  34   v64si hx, hy;
  35   GET_HIGH_WORD(hx, x, NO_COND);
  36   GET_HIGH_WORD(hy, y, NO_COND);
  37   SET_HIGH_WORD(x, (hx & 0x7fffffff) | (hy & 0x80000000), NO_COND);
  38   VECTOR_RETURN (x, NO_COND);
  39
  40   FUNCTION_RETURN;
  41 }
  42
  43 DEF_VARIANTS2 (copysign, df, df)