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_hypotl.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 libm/w_hypotl.c (limited to 'libm/w_hypotl.c') diff --git a/libm/w_hypotl.c b/libm/w_hypotl.c new file mode 100644 index 000000000..ebbb1a1c0 --- /dev/null +++ b/libm/w_hypotl.c @@ -0,0 +1,40 @@ +/* w_hypotl.c -- long double version of w_hypot.c. + * Conversion to long double by Ulrich Drepper, + * Cygnus Support, drepper@cygnus.com. + */ + +/* + * ==================================================== + * 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 hypotl(x,y) + */ + +#include +#include "math_private.h" + +#if !defined __NO_LONG_DOUBLE_MATH +long double +hypotl(long double x, long double y) +{ +# if __UCLIBC_HAS_FENV__ + long double z; + z = (long double) __ieee754_hypot((double) x, (double) y); + if(__builtin_expect(!isfinite(z), 0) + && isfinite(x) && isfinite(y) && _LIB_VERSION != _IEEE_) + return __kernel_standard_l(x, y, 204); /* hypot overflow */ + + return z; +# else + return (long double) __ieee754_hypot((double) x, (double) y); +# endif /* __UCLIBC_HAS_FENV__ */ +} +#endif /* __NO_LONG_DOUBLE_MATH */ -- cgit v1.2.3