1/* Test file for mpfr_tanh. 2 3Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. 4Contributed by the Arenaire and Cacao projects, INRIA. 5 6This file is part of the GNU MPFR Library. 7 8The GNU MPFR Library is free software; you can redistribute it and/or modify 9it under the terms of the GNU Lesser General Public License as published by 10the Free Software Foundation; either version 3 of the License, or (at your 11option) any later version. 12 13The GNU MPFR Library is distributed in the hope that it will be useful, but 14WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 16License for more details. 17 18You should have received a copy of the GNU Lesser General Public License 19along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see 20http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., 2151 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ 22 23#include <stdio.h> 24#include <stdlib.h> 25 26#include "mpfr-test.h" 27 28#define TEST_FUNCTION mpfr_tanh 29#define TEST_RANDOM_EMIN -36 30#define TEST_RANDOM_EMAX 36 31#include "tgeneric.c" 32 33static void 34special (void) 35{ 36 mpfr_t x; 37 38 mpfr_init (x); 39 40 mpfr_set_nan (x); 41 mpfr_tanh (x, x, MPFR_RNDN); 42 MPFR_ASSERTN(mpfr_nan_p (x)); 43 44 mpfr_set_inf (x, 1); 45 mpfr_tanh (x, x, MPFR_RNDN); 46 MPFR_ASSERTN(mpfr_cmp_ui (x, 1) == 0); 47 48 mpfr_set_inf (x, -1); 49 mpfr_tanh (x, x, MPFR_RNDN); 50 MPFR_ASSERTN(mpfr_cmp_si (x, -1) == 0); 51 52 mpfr_set_prec (x, 10); 53 mpfr_set_str_binary (x, "-0.1001011001"); 54 mpfr_tanh (x, x, MPFR_RNDN); 55 MPFR_ASSERTN(mpfr_cmp_si_2exp (x, -135, -8) == 0); 56 57 mpfr_clear (x); 58} 59 60static void 61special_overflow (void) 62{ 63 mpfr_t x, y; 64 int i; 65 mpfr_exp_t emin, emax; 66 67 emin = mpfr_get_emin (); 68 emax = mpfr_get_emax (); 69 70 mpfr_clear_overflow (); 71 set_emin (-125); 72 set_emax (128); 73 mpfr_init2 (x, 24); 74 mpfr_init2 (y, 24); 75 76 mpfr_set_str_binary (x, "0.101100100000000000110100E7"); 77 i = mpfr_tanh (y, x, MPFR_RNDN); 78 if (mpfr_cmp_ui (y, 1) || i != 1) 79 { 80 printf("Overflow error (1). i=%d\ny=", i); 81 mpfr_dump (y); 82 exit (1); 83 } 84 MPFR_ASSERTN (!mpfr_overflow_p ()); 85 86 i = mpfr_tanh (y, x, MPFR_RNDZ); 87 if (mpfr_cmp_str (y, "0.111111111111111111111111E0", 2, MPFR_RNDN) 88 || i != -1) 89 { 90 printf("Overflow error (2).i=%d\ny=", i); 91 mpfr_dump (y); 92 exit (1); 93 } 94 MPFR_ASSERTN (!mpfr_overflow_p ()); 95 96 set_emin (emin); 97 set_emax (emax); 98 99 mpfr_set_str_binary (x, "0.1E1000000000"); 100 i = mpfr_tanh (y, x, MPFR_RNDN); 101 if (mpfr_cmp_ui (y, 1) || i != 1) 102 { 103 printf("Overflow error (3). i=%d\ny=", i); 104 mpfr_dump (y); 105 exit (1); 106 } 107 MPFR_ASSERTN (!mpfr_overflow_p ()); 108 mpfr_set_str_binary (x, "-0.1E1000000000"); 109 i = mpfr_tanh (y, x, MPFR_RNDU); 110 if (mpfr_cmp_str (y, "-0.111111111111111111111111E0", 2, MPFR_RNDN) 111 || i != 1) 112 { 113 printf("Overflow error (4). i=%d\ny=", i); 114 mpfr_dump (y); 115 exit (1); 116 } 117 118 mpfr_clear (y); 119 mpfr_clear (x); 120} 121 122int 123main (int argc, char *argv[]) 124{ 125 tests_start_mpfr (); 126 127 special_overflow (); 128 special (); 129 130 test_generic (2, 100, 100); 131 132 data_check ("data/tanh", mpfr_tanh, "mpfr_tanh"); 133 bad_cases (mpfr_tanh, mpfr_atanh, "mpfr_tanh", 256, -128, 0, 134 4, 128, 800, 100); 135 136 tests_end_mpfr (); 137 return 0; 138} 139