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_lgammaf.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 libm/w_lgammaf.c (limited to 'libm/w_lgammaf.c') diff --git a/libm/w_lgammaf.c b/libm/w_lgammaf.c new file mode 100644 index 000000000..1dceec4b4 --- /dev/null +++ b/libm/w_lgammaf.c @@ -0,0 +1,30 @@ +/* w_lgammaf.c -- float version of w_lgamma.c. + * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@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. + * ==================================================== + */ + +#include +#include "math_private.h" + +float lgammaf(float x) +{ + return lgammaf_r(x, &signgam); +} + +/* NB: gamma function is an old name for lgamma. + * It is deprecated. + * Some C math libraries redefine it as a "true gamma", i.e., + * not a ln(|Gamma(x)|) but just Gamma(x), but standards + * introduced tgamma name for that. + */ +strong_alias(lgammaf, gammaf) \ No newline at end of file -- cgit v1.2.3