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author | Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com> | 2016-12-13 22:42:51 -0200 |
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committer | Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com> | 2017-01-04 16:25:04 -0200 |
commit | f67d78192c1be9d56d3a6f3fda4e0a70ae48c44d (patch) | |
tree | e08b1ae84e100cb5a17819f1bb9416a6c203d19b /math/w_tgammal_compat.c | |
parent | 811de1a68863f7903341288a113b8c0ac7aa9c0e (diff) | |
download | glibc-f67d78192c1be9d56d3a6f3fda4e0a70ae48c44d.zip glibc-f67d78192c1be9d56d3a6f3fda4e0a70ae48c44d.tar.gz glibc-f67d78192c1be9d56d3a6f3fda4e0a70ae48c44d.tar.bz2 |
Move wrappers to libm-compat-calls-auto
This commit moves one step towards the deprecation of wrappers that
use _LIB_VERSION / matherr / __kernel_standard functionality, by
adding the suffix '_compat' to their filenames and adjusting Makefiles
and #includes accordingly.
New template wrappers that do not use such functionality will be added
by future patches and will be first used by the float128 wrappers.
Diffstat (limited to 'math/w_tgammal_compat.c')
-rw-r--r-- | math/w_tgammal_compat.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/math/w_tgammal_compat.c b/math/w_tgammal_compat.c new file mode 100644 index 0000000..50de8cf --- /dev/null +++ b/math/w_tgammal_compat.c @@ -0,0 +1,45 @@ +/* w_gammal.c -- long double version of w_gamma.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. + * ==================================================== + */ + +/* long double gammal(double x) + * Return the Gamma function of x. + */ + +#include <errno.h> +#include <math.h> +#include <math_private.h> + +long double +__tgammal(long double x) +{ + int local_signgam; + long double y = __ieee754_gammal_r(x,&local_signgam); + + if(__glibc_unlikely (!isfinite (y) || y == 0) + && (isfinite (x) || (isinf (x) && x < 0.0)) + && _LIB_VERSION != _IEEE_) { + if(x==0.0) + return __kernel_standard_l(x,x,250); /* tgamma pole */ + else if(__floorl(x)==x&&x<0.0L) + return __kernel_standard_l(x,x,241); /* tgamma domain */ + else if (y == 0) + __set_errno (ERANGE); /* tgamma underflow */ + else + return __kernel_standard_l(x,x,240); /* tgamma overflow */ + } + return local_signgam < 0 ? - y : y; +} +weak_alias (__tgammal, tgammal) |