| 1 | /* s_copysignl.c -- long double version of s_copysign.c. |
|---|
| 2 | */ |
|---|
| 3 | |
|---|
| 4 | /* |
|---|
| 5 | * ==================================================== |
|---|
| 6 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
|---|
| 7 | * |
|---|
| 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 |
|---|
| 11 | * is preserved. |
|---|
| 12 | * ==================================================== |
|---|
| 13 | */ |
|---|
| 14 | |
|---|
| 15 | #if defined (LIBM_SCCS) && ! defined (lint) |
|---|
| 16 | static char rcsid[] = "$NetBSD: $" ; |
|---|
| 17 | #endif |
|---|
| 18 | |
|---|
| 19 | /* |
|---|
| 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. |
|---|
| 23 | */ |
|---|
| 24 | |
|---|
| 25 | #define NO_MATH_REDIRECT |
|---|
| 26 | #include <math.h> |
|---|
| 27 | #include <math_private.h> |
|---|
| 28 | #include <libm-alias-ldouble.h> |
|---|
| 29 | #include <math-use-builtins.h> |
|---|
| 30 | |
|---|
| 31 | _Float128 |
|---|
| 32 | __copysignl (_Float128 x, _Float128 y) |
|---|
| 33 | { |
|---|
| 34 | #if USE_COPYSIGNL_BUILTIN |
|---|
| 35 | return __builtin_copysignl (x, y); |
|---|
| 36 | #else |
|---|
| 37 | /* Use generic implementation. */ |
|---|
| 38 | uint64_t hx, hy; |
|---|
| 39 | GET_LDOUBLE_MSW64 (hx, x); |
|---|
| 40 | GET_LDOUBLE_MSW64 (hy, y); |
|---|
| 41 | SET_LDOUBLE_MSW64 (x, (hx & 0x7fffffffffffffffULL) |
|---|
| 42 | | (hy & 0x8000000000000000ULL)); |
|---|
| 43 | return x; |
|---|
| 44 | #endif /* ! USE_COPYSIGNL_BUILTIN */ |
|---|
| 45 | } |
|---|
| 46 | libm_alias_ldouble (__copysign, copysign) |
|---|
| 47 | |
|---|
