52ebc02e14
do not also provide a __generic_XXX version as well. This is how we used to runtime select the generic vs i387 versions on the i386 platform. This saves a pile of #defines in the src/math_private.h file to undo the __generic_XXX renames in some of the *.c files.
38 lines
914 B
C
38 lines
914 B
C
/* s_copysignf.c -- float version of s_copysign.c.
|
|
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
|
|
*/
|
|
|
|
/*
|
|
* ====================================================
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
|
* Permission to use, copy, modify, and distribute this
|
|
* software is freely granted, provided that this notice
|
|
* is preserved.
|
|
* ====================================================
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char rcsid[] = "$FreeBSD$";
|
|
#endif
|
|
|
|
/*
|
|
* copysignf(float x, float y)
|
|
* copysignf(x,y) returns a value with the magnitude of x and
|
|
* with the sign bit of y.
|
|
*/
|
|
|
|
#include "math.h"
|
|
#include "math_private.h"
|
|
|
|
float
|
|
copysignf(float x, float y)
|
|
{
|
|
u_int32_t ix,iy;
|
|
GET_FLOAT_WORD(ix,x);
|
|
GET_FLOAT_WORD(iy,y);
|
|
SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000));
|
|
return x;
|
|
}
|