aboutsummaryrefslogtreecommitdiff
path: root/math/w_cosh.c
blob: 57010781bf72d4a039dcf6e5556e31cb8cde7e70 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
/* Optimizations bu Ulrich Drepper <drepper@gmail.com>, 2011 */
/*
 * ====================================================
 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
 *
 * Developed at SunPro, a Sun Microsystems, Inc. business.
 * Permission to use, copy, modify, and distribute this
 * software is freely granted, provided that this notice
 * is preserved.
 * ====================================================
 */

/*
 * wrapper cosh(x)
 */

#include <math.h>
#include <math_private.h>

double
__cosh (double x)
{
	double z = __ieee754_cosh (x);
	if (__builtin_expect (!__finite (z), 0) && __finite (x)
	    && _LIB_VERSION != _IEEE_)
		return __kernel_standard (x, x, 5); /* cosh overflow */

	return z;
}
weak_alias (__cosh, cosh)
#ifdef NO_LONG_DOUBLE
strong_alias (__cosh, __coshl)
weak_alias (__cosh, coshl)
#endif