From ea38f4d89c9698895b1cf53a5946429dc1d8bbaa Mon Sep 17 00:00:00 2001 From: Sergey Cherkashin <4erkashin@list.ru> Date: Tue, 3 Oct 2017 15:26:34 +0300 Subject: math: add exception handling functionality According to standards SVID and SYSV. Modified lgamma calling in case when 'signgam' variable should not be used. Signed-off-by: Waldemar Brodkorb --- libm/w_cosh.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 libm/w_cosh.c (limited to 'libm/w_cosh.c') diff --git a/libm/w_cosh.c b/libm/w_cosh.c new file mode 100644 index 000000000..d9a6da3df --- /dev/null +++ b/libm/w_cosh.c @@ -0,0 +1,34 @@ +/* Optimizations bu Ulrich Drepper , 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 +#include "math_private.h" + +double +cosh (double x) +{ +#if __UCLIBC_HAS_FENV__ + double z = __ieee754_cosh (x); + if (__builtin_expect (!isfinite (z), 0) && isfinite (x) + && _LIB_VERSION != _IEEE_) + return __kernel_standard (x, x, 5); /* cosh overflow */ + + return z; +#else + return __ieee754_cosh (x); +#endif +} +libm_hidden_def(cosh) -- cgit v1.2.3