| The Android Open Source Project | b07e1d9 | 2009-03-03 19:29:30 -0800 | [diff] [blame] | 1 | |
| 2 | /* @(#)s_copysign.c 1.3 95/01/18 */ |
| 3 | /* |
| 4 | * ==================================================== |
| 5 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
| 6 | * |
| 7 | * Developed at SunSoft, a Sun Microsystems, Inc. business. |
| 8 | * Permission to use, copy, modify, and distribute this |
| 9 | * software is freely granted, provided that this notice |
| 10 | * is preserved. |
| 11 | * ==================================================== |
| 12 | */ |
| 13 | |
| 14 | /* |
| 15 | * ieee_copysign(double x, double y) |
| 16 | * ieee_copysign(x,y) returns a value with the magnitude of x and |
| 17 | * with the sign bit of y. |
| 18 | */ |
| 19 | |
| 20 | #include "fdlibm.h" |
| 21 | |
| 22 | #ifdef __STDC__ |
| 23 | double ieee_copysign(double x, double y) |
| 24 | #else |
| 25 | double ieee_copysign(x,y) |
| 26 | double x,y; |
| 27 | #endif |
| 28 | { |
| 29 | __HI(x) = (__HI(x)&0x7fffffff)|(__HI(y)&0x80000000); |
| 30 | return x; |
| 31 | } |