diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/slowexp.c')
-rw-r--r-- | sysdeps/ieee754/dbl-64/slowexp.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/sysdeps/ieee754/dbl-64/slowexp.c b/sysdeps/ieee754/dbl-64/slowexp.c deleted file mode 100644 index ba5617466c..0000000000 --- a/sysdeps/ieee754/dbl-64/slowexp.c +++ /dev/null @@ -1,86 +0,0 @@ -/* - * IBM Accurate Mathematical Library - * written by International Business Machines Corp. - * Copyright (C) 2001-2018 Free Software Foundation, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published by - * the Free Software Foundation; either version 2.1 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - */ -/**************************************************************************/ -/* MODULE_NAME:slowexp.c */ -/* */ -/* FUNCTION:slowexp */ -/* */ -/* FILES NEEDED:mpa.h */ -/* mpa.c mpexp.c */ -/* */ -/*Converting from double precision to Multi-precision and calculating */ -/* e^x */ -/**************************************************************************/ -#include <math_private.h> - -#include <stap-probe.h> - -#ifndef USE_LONG_DOUBLE_FOR_MP -# include "mpa.h" -void __mpexp (mp_no *x, mp_no *y, int p); -#endif - -#ifndef SECTION -# define SECTION -#endif - -/*Converting from double precision to Multi-precision and calculating e^x */ -double -SECTION -__slowexp (double x) -{ -#ifndef USE_LONG_DOUBLE_FOR_MP - double w, z, res, eps = 3.0e-26; - int p; - mp_no mpx, mpy, mpz, mpw, mpeps, mpcor; - - /* Use the multiple precision __MPEXP function to compute the exponential - First at 144 bits and if it is not accurate enough, at 768 bits. */ - p = 6; - __dbl_mp (x, &mpx, p); - __mpexp (&mpx, &mpy, p); - __dbl_mp (eps, &mpeps, p); - __mul (&mpeps, &mpy, &mpcor, p); - __add (&mpy, &mpcor, &mpw, p); - __sub (&mpy, &mpcor, &mpz, p); - __mp_dbl (&mpw, &w, p); - __mp_dbl (&mpz, &z, p); - if (w == z) - { - /* Track how often we get to the slow exp code plus - its input/output values. */ - LIBC_PROBE (slowexp_p6, 2, &x, &w); - return w; - } - else - { - p = 32; - __dbl_mp (x, &mpx, p); - __mpexp (&mpx, &mpy, p); - __mp_dbl (&mpy, &res, p); - - /* Track how often we get to the uber-slow exp code plus - its input/output values. */ - LIBC_PROBE (slowexp_p32, 2, &x, &res); - return res; - } -#else - return (double) __ieee754_expl((long double)x); -#endif -} |