| /* s_isnanl.c -- long double version of s_isnan.c. |
| * Conversion to long double by Jakub Jelinek, jj@ultra.linux.cz. |
| */ |
| |
| /* |
| * ==================================================== |
| * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
| * |
| * Developed at SunPro, a Sun Microsystems, Inc. business. |
| * Permission to use, copy, modify, and distribute this |
| * software is freely granted, provided that this notice |
| * is preserved. |
| * ==================================================== |
| */ |
| |
| #if defined(LIBM_SCCS) && !defined(lint) |
| static char rcsid[] = "$NetBSD: $"; |
| #endif |
| |
| /* |
| * isnanl(x) returns 1 is x is nan, else 0; |
| * no branching! |
| */ |
| |
| #include <math.h> |
| #include <math_private.h> |
| #include <math_ldbl_opt.h> |
| |
| int |
| ___isnanl (long double x) |
| { |
| uint64_t hx; |
| double xhi; |
| |
| xhi = ldbl_high (x); |
| EXTRACT_WORDS64 (hx, xhi); |
| hx &= 0x7fffffffffffffffLL; |
| hx = 0x7ff0000000000000LL - hx; |
| return (int) (hx >> 63); |
| } |
| hidden_ver (___isnanl, __isnanl) |
| #ifndef IS_IN_libm |
| weak_alias (___isnanl, ____isnanl) |
| long_double_symbol (libc, ___isnanl, isnanl); |
| long_double_symbol (libc, ____isnanl, __isnanl); |
| #endif |
