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2aa62f2b | 1 | /* @(#)s_copysign.c 5.1 93/09/24 */\r |
2 | /*\r | |
3 | * ====================================================\r | |
4 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.\r | |
5 | *\r | |
6 | * Developed at SunPro, a Sun Microsystems, Inc. business.\r | |
7 | * Permission to use, copy, modify, and distribute this\r | |
8 | * software is freely granted, provided that this notice\r | |
9 | * is preserved.\r | |
10 | * ====================================================\r | |
11 | */\r | |
12 | #include <LibConfig.h>\r | |
13 | #include <sys/EfiCdefs.h>\r | |
14 | #if defined(LIBM_SCCS) && !defined(lint)\r | |
15 | __RCSID("$NetBSD: s_copysign.c,v 1.11 2002/05/26 22:01:54 wiz Exp $");\r | |
16 | #endif\r | |
17 | \r | |
18 | /*\r | |
19 | * copysign(double x, double y)\r | |
20 | * copysign(x,y) returns a value with the magnitude of x and\r | |
21 | * with the sign bit of y.\r | |
22 | */\r | |
23 | \r | |
24 | #include "math.h"\r | |
25 | #include "math_private.h"\r | |
26 | \r | |
27 | double\r | |
28 | copysign(double x, double y)\r | |
29 | {\r | |
30 | u_int32_t hx,hy;\r | |
31 | GET_HIGH_WORD(hx,x);\r | |
32 | GET_HIGH_WORD(hy,y);\r | |
33 | SET_HIGH_WORD(x,(hx&0x7fffffff)|(hy&0x80000000));\r | |
34 | return x;\r | |
35 | }\r |