1 | /* Optimizations bu Ulrich Drepper <drepper@gmail.com>, 2011 */ |
2 | /* |
3 | * ==================================================== |
4 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
5 | * |
6 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
7 | * Permission to use, copy, modify, and distribute this |
8 | * software is freely granted, provided that this notice |
9 | * is preserved. |
10 | * ==================================================== |
11 | */ |
12 | |
13 | /* |
14 | * wrapper cosh(x) |
15 | */ |
16 | |
17 | #include <math.h> |
18 | #include <math_private.h> |
19 | #include <math-svid-compat.h> |
20 | #include <libm-alias-double.h> |
21 | |
22 | #if LIBM_SVID_COMPAT |
23 | double |
24 | __cosh (double x) |
25 | { |
26 | double z = __ieee754_cosh (x); |
27 | if (__builtin_expect (!isfinite (z), 0) && isfinite (x) |
28 | && _LIB_VERSION != _IEEE_) |
29 | return __kernel_standard (x, x, 5); /* cosh overflow */ |
30 | |
31 | return z; |
32 | } |
33 | libm_alias_double (__cosh, cosh) |
34 | #endif |
35 | |