1 /* Test file for mpfr_tanh. 2 3 Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. 4 Contributed by the AriC and Caramel projects, INRIA. 5 6 This file is part of the GNU MPFR Library. 7 8 The GNU MPFR Library is free software; you can redistribute it and/or modify 9 it under the terms of the GNU Lesser General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or (at your 11 option) any later version. 12 13 The GNU MPFR Library is distributed in the hope that it will be useful, but 14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 16 License for more details. 17 18 You should have received a copy of the GNU Lesser General Public License 19 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see 20 http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., 21 51 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 33 static void 34 special (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 60 static void 61 special_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 } 121 122 int 123 main (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