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38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
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/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <math.h>
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#include "ieee754.h"
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/* Return X with its signed changed to Y's. */
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double
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DEFUN(__copysign, (x, y), double x AND double y)
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{
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union ieee754_double ux, uy;
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ux.d = x;
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uy.d = y;
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ux.ieee.negative = uy.ieee.negative;
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return ux.d;
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}
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weak_alias (__copysign, copysign)
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