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)
17static 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
28int __isnanl(_Float128 x)
29{
30 int64_t hx,lx;
31 GET_LDOUBLE_WORDS64(hx,lx,x);
32 hx &= 0x7fffffffffffffffLL;
33 hx |= (u_int64_t)(lx|(-lx))>>63;
34 hx = 0x7fff000000000000LL - hx;
35 return (int)((u_int64_t)hx>>63);
36}
37mathx_hidden_def (__isnanl)
38weak_alias (__isnanl, isnanl)
39