1 /* s_finitel.c -- long double version of s_finite.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 * finitel(x) returns 1 is x is finite, else 0;
21 * no branching!
22 */
23
24 #include <math.h>
25 #include <math_private.h>
26 #include <math_ldbl_opt.h>
27
28 int
___finitel(long double x)29 ___finitel (long double x)
30 {
31 uint64_t hx;
32 double xhi;
33
34 xhi = ldbl_high (x);
35 EXTRACT_WORDS64 (hx, xhi);
36 hx &= 0x7ff0000000000000LL;
37 hx -= 0x7ff0000000000000LL;
38 return hx >> 63;
39 }
40 hidden_ver (___finitel, __finitel)
41 weak_alias (___finitel, ____finitel)
42 #if IS_IN (libm)
43 long_double_symbol (libm, ____finitel, finitel);
44 long_double_symbol (libm, ___finitel, __finitel);
45 #else
46 long_double_symbol (libc, ____finitel, finitel);
47 long_double_symbol (libc, ___finitel, __finitel);
48 #endif
49