projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0ecb606c JJ |
1 | /* s_isnanl.c -- long double version of s_isnan.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 | * isnanl(x) returns 1 is x is nan, else 0; | |
| 22 | * no branching! | |
| 23 | */ | |
| 24 | ||
| 25 | #include "math.h" | |
| 26 | #include "math_private.h" | |
| 27 | #include <math_ldbl_opt.h> | |
| 28 | ||
| 29 | int | |
| 30 | ___isnanl (long double x) | |
| 31 | { | |
| 32 | int64_t hx,lx; | |
| 33 | GET_LDOUBLE_WORDS64(hx,lx,x); | |
| 34 | hx &= 0x7fffffffffffffffLL; | |
| 35 | hx = 0x7ff0000000000000LL - hx; | |
| 36 | return (int)((u_int64_t)hx>>63); | |
| 37 | } | |
| 38 | hidden_ver (___isnanl, __isnanl) | |
| 39 | #ifndef IS_IN_libm | |
| 40 | weak_alias (___isnanl, ____isnanl) | |
| 41 | long_double_symbol (libc, ___isnanl, isnanl); | |
| 42 | long_double_symbol (libc, ____isnanl, __isnanl); | |
| 43 | #endif |