1 /* s_copysignl.c -- long double version of s_copysign.c.
5 * ====================================================
6 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 * Developed at SunPro, a Sun Microsystems, Inc. business.
9 * Permission to use, copy, modify, and distribute this
10 * software is freely granted, provided that this notice
12 * ====================================================
15 #if defined (LIBM_SCCS) && ! defined (lint)
16 static char rcsid
[] = "$NetBSD: $";
20 * copysignl(long double x, long double y)
21 * copysignl(x,y) returns a value with the magnitude of x and
22 * with the sign bit of y.
25 #define NO_MATH_REDIRECT
27 #include <math_private.h>
28 #include <libm-alias-ldouble.h>
29 #include <math-use-builtins.h>
32 __copysignl (_Float128 x
, _Float128 y
)
34 #if USE_COPYSIGNL_BUILTIN
35 return __builtin_copysignl (x
, y
);
37 /* Use generic implementation. */
39 GET_LDOUBLE_MSW64 (hx
, x
);
40 GET_LDOUBLE_MSW64 (hy
, y
);
41 SET_LDOUBLE_MSW64 (x
, (hx
& 0x7fffffffffffffffULL
)
42 | (hy
& 0x8000000000000000ULL
));
44 #endif /* ! USE_COPYSIGNL_BUILTIN */
46 libm_alias_ldouble (__copysign
, copysign
)