1 /* s_isnanl.c -- long double version of s_isnan.c.
2 * Conversion to long double by Jakub Jelinek, jj@ultra.linux.cz.
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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
13 * ====================================================
16 #if defined(LIBM_SCCS) && !defined(lint)
17 static char rcsid
[] = "$NetBSD: $";
21 * isnanl(x) returns 1 is x is nan, else 0;
26 #include <math_private.h>
28 int __isnanl(_Float128 x
)
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);
38 weak_alias (__isnanl
, isnanl
)