/* Copy a sign bit between floating-point values.
   Copyright (C) 1997 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
  
   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.
  
   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.
  
   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* This has been coded in assembler because GCC makes such a mess of it
   when it's coded in C.  */

	.section ".text"
	.align 2
	.globl __copysign
	.type __copysign,@function
__copysign:	
/* double [f1] copysign (double [f1] x, double [f2] y);
   copysign(x,y) returns a value with the magnitude of x and
   with the sign bit of y.  */

	stwu	%r1,-16(%r1)
	stfd	%f2,8(%r1)
	lwz	%r3,8(%r1)
	cmpwi   %r3,0
	addi    %r1,%r1,16
	blt     0f
	fabs    %f1,%f1
	blr
0:	fnabs   %f1,%f1
	blr
0:
	.size	 __copysign,0b-__copysign
	
	.globl copysign
	.globl copysignf
	.globl __copysignf
	.weak copysign
	.weak copysignf
	.set copysign,__copysign
/* It turns out that it's safe to use this code even for single-precision.  */
	.set __copysignf,__copysign
	.set copysignf,__copysign
#ifdef NO_LONG_DOUBLE
	.globl copysignl
	.globl __copysignl
	.weak copysignl
	.set __copysignl,__copysign
	.set copysignl,__copysign
#endif