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Last change
on this file was 2006, checked in by bird, 20 years ago |
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Initial revision
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Property cvs2svn:cvs-rev
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1.1
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Property svn:eol-style
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native
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Property svn:executable
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*
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File size:
983 bytes
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| 1 | /* s_copysignf.c -- float version of s_copysign.c.
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| 2 | * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * ====================================================
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| 7 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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| 8 | *
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| 9 | * Developed at SunPro, a Sun Microsystems, Inc. business.
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| 10 | * Permission to use, copy, modify, and distribute this
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| 11 | * software is freely granted, provided that this notice
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| 12 | * is preserved.
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| 13 | * ====================================================
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| 14 | */
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| 15 |
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| 16 | #ifndef lint
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| 17 | static char rcsid[] = "$FreeBSD: src/lib/msun/src/s_copysignf.c,v 1.9 2003/07/23 04:53:46 peter Exp $";
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| 18 | #endif
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| 19 |
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| 20 | /*
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| 21 | * copysignf(float x, float y)
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| 22 | * copysignf(x,y) returns a value with the magnitude of x and
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| 23 | * with the sign bit of y.
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| 24 | */
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| 25 |
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| 26 | #include "math.h"
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| 27 | #include "math_private.h"
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| 28 |
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| 29 | float
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| 30 | copysignf(float x, float y)
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| 31 | {
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| 32 | u_int32_t ix,iy;
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| 33 | GET_FLOAT_WORD(ix,x);
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| 34 | GET_FLOAT_WORD(iy,y);
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| 35 | SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000));
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| 36 | return x;
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| 37 | }
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