1 | /* w_expl.c -- long double version of w_exp.c. |
2 | * Conversion to long double by Ulrich Drepper, |
3 | * Cygnus Support, drepper@cygnus.com. |
4 | */ |
5 | |
6 | /* |
7 | * ==================================================== |
8 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
9 | * |
10 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
11 | * Permission to use, copy, modify, and distribute this |
12 | * software is freely granted, provided that this notice |
13 | * is preserved. |
14 | * ==================================================== |
15 | */ |
16 | |
17 | #if defined(LIBM_SCCS) && !defined(lint) |
18 | static char rcsid[] = "$NetBSD: $" ; |
19 | #endif |
20 | |
21 | /* |
22 | * wrapper expl(x) |
23 | */ |
24 | |
25 | #include <math.h> |
26 | #include <math_private.h> |
27 | #include <math-svid-compat.h> |
28 | #include <libm-alias-ldouble.h> |
29 | |
30 | #if LIBM_SVID_COMPAT |
31 | long double __expl(long double x) /* wrapper exp */ |
32 | { |
33 | # ifdef _IEEE_LIBM |
34 | return __ieee754_expl(x); |
35 | # else |
36 | long double z = __ieee754_expl (x); |
37 | if (__glibc_unlikely (!isfinite (z) || z == 0) |
38 | && isfinite (x) && _LIB_VERSION != _IEEE_) |
39 | return __kernel_standard_l (x, x, 206 + !!signbit (x)); |
40 | |
41 | return z; |
42 | # endif |
43 | } |
44 | libm_hidden_def (__expl) |
45 | libm_alias_ldouble (__exp, exp) |
46 | #endif |
47 | |