1 | /* s_copysignl.c -- long double version of s_copysign.c. |
2 | * Conversion to long double by Jakub Jelinek, jj@ultra.linux.cz. |
3 | */ |
4 | |
5 | /* |
6 | * ==================================================== |
7 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
8 | * |
9 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
10 | * Permission to use, copy, modify, and distribute this |
11 | * software is freely granted, provided that this notice |
12 | * is preserved. |
13 | * ==================================================== |
14 | */ |
15 | |
16 | #if defined (LIBM_SCCS) && ! defined (lint) |
17 | static char rcsid[] = "$NetBSD: $" ; |
18 | #endif |
19 | |
20 | /* |
21 | * copysignl(long double x, long double y) |
22 | * copysignl(x,y) returns a value with the magnitude of x and |
23 | * with the sign bit of y. |
24 | */ |
25 | |
26 | #define NO_MATH_REDIRECT |
27 | #include <math.h> |
28 | #include <math_private.h> |
29 | #include <libm-alias-ldouble.h> |
30 | #include <math-use-builtins.h> |
31 | |
32 | _Float128 |
33 | __copysignl (_Float128 x, _Float128 y) |
34 | { |
35 | #if USE_COPYSIGNL_BUILTIN |
36 | return __builtin_copysignl (x, y); |
37 | #else |
38 | /* Use generic implementation. */ |
39 | uint64_t hx, hy; |
40 | GET_LDOUBLE_MSW64 (hx, x); |
41 | GET_LDOUBLE_MSW64 (hy, y); |
42 | SET_LDOUBLE_MSW64 (x, (hx & 0x7fffffffffffffffULL) |
43 | | (hy & 0x8000000000000000ULL)); |
44 | return x; |
45 | #endif /* ! USE_COPYSIGNL_BUILTIN */ |
46 | } |
47 | libm_alias_ldouble (__copysign, copysign) |
48 | |