| /* Test file for mpfr_tanh. |
| |
| Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
| Contributed by the Arenaire and Cacao projects, INRIA. |
| |
| This file is part of the GNU MPFR Library. |
| |
| The GNU MPFR Library 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. |
| |
| The GNU MPFR Library 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 the GNU MPFR Library; see the file COPYING.LIB. If not, write to |
| the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "mpfr-test.h" |
| |
| #define TEST_FUNCTION mpfr_tanh |
| #define TEST_RANDOM_EMIN -36 |
| #define TEST_RANDOM_EMAX 36 |
| #include "tgeneric.c" |
| |
| static void |
| special (void) |
| { |
| mpfr_t x; |
| |
| mpfr_init (x); |
| |
| mpfr_set_nan (x); |
| mpfr_tanh (x, x, GMP_RNDN); |
| MPFR_ASSERTN(mpfr_nan_p (x)); |
| |
| mpfr_set_inf (x, 1); |
| mpfr_tanh (x, x, GMP_RNDN); |
| MPFR_ASSERTN(mpfr_cmp_ui (x, 1) == 0); |
| |
| mpfr_set_inf (x, -1); |
| mpfr_tanh (x, x, GMP_RNDN); |
| MPFR_ASSERTN(mpfr_cmp_si (x, -1) == 0); |
| |
| mpfr_set_prec (x, 10); |
| mpfr_set_str_binary (x, "-0.1001011001"); |
| mpfr_tanh (x, x, GMP_RNDN); |
| MPFR_ASSERTN(mpfr_cmp_si_2exp (x, -135, -8) == 0); |
| |
| mpfr_clear (x); |
| } |
| |
| static void |
| special_overflow (void) |
| { |
| mpfr_t x, y; |
| int i; |
| mp_exp_t emin, emax; |
| |
| emin = mpfr_get_emin (); |
| emax = mpfr_get_emax (); |
| |
| mpfr_clear_overflow (); |
| set_emin (-125); |
| set_emax (128); |
| mpfr_init2 (x, 24); |
| mpfr_init2 (y, 24); |
| |
| mpfr_set_str_binary (x, "0.101100100000000000110100E7"); |
| i = mpfr_tanh (y, x, GMP_RNDN); |
| if (mpfr_cmp_ui (y, 1) || i != 1) |
| { |
| printf("Overflow error (1). i=%d\ny=", i); |
| mpfr_dump (y); |
| exit (1); |
| } |
| MPFR_ASSERTN (!mpfr_overflow_p ()); |
| |
| i = mpfr_tanh (y, x, GMP_RNDZ); |
| if (mpfr_cmp_str (y, "0.111111111111111111111111E0", 2, GMP_RNDN) |
| || i != -1) |
| { |
| printf("Overflow error (2).i=%d\ny=", i); |
| mpfr_dump (y); |
| exit (1); |
| } |
| MPFR_ASSERTN (!mpfr_overflow_p ()); |
| |
| set_emin (emin); |
| set_emax (emax); |
| |
| mpfr_set_str_binary (x, "0.1E1000000000"); |
| i = mpfr_tanh (y, x, GMP_RNDN); |
| if (mpfr_cmp_ui (y, 1) || i != 1) |
| { |
| printf("Overflow error (3). i=%d\ny=", i); |
| mpfr_dump (y); |
| exit (1); |
| } |
| MPFR_ASSERTN (!mpfr_overflow_p ()); |
| mpfr_set_str_binary (x, "-0.1E1000000000"); |
| i = mpfr_tanh (y, x, GMP_RNDU); |
| if (mpfr_cmp_str (y, "-0.111111111111111111111111E0", 2, GMP_RNDN) |
| || i != 1) |
| { |
| printf("Overflow error (4). i=%d\ny=", i); |
| mpfr_dump (y); |
| exit (1); |
| } |
| |
| mpfr_clear (y); |
| mpfr_clear (x); |
| } |
| |
| int |
| main (int argc, char *argv[]) |
| { |
| tests_start_mpfr (); |
| |
| special_overflow (); |
| special (); |
| |
| test_generic (2, 100, 100); |
| |
| data_check ("data/tanh", mpfr_tanh, "mpfr_tanh"); |
| bad_cases (mpfr_tanh, mpfr_atanh, "mpfr_tanh", 256, -128, 0, |
| 4, 128, 800, 100); |
| |
| tests_end_mpfr (); |
| return 0; |
| } |