1 /* Test file for mpfr_sinh_cosh. 2 3 Copyright 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 #if MPFR_VERSION >= MPFR_VERSION_NUM(2,4,0) 29 30 static void 31 failed (mpfr_t x, mpfr_t esh, mpfr_t gsh, mpfr_t ech, mpfr_t gch) 32 { 33 printf ("error : mpfr_sinh_cosh (x) x = "); 34 mpfr_out_str (stdout, 10, 0, x, MPFR_RNDD); 35 printf ("\nsinh(x) expected "); 36 mpfr_out_str (stdout, 10, 0, esh, MPFR_RNDD); 37 printf ("\n got "); 38 mpfr_out_str (stdout, 10, 0, gsh, MPFR_RNDD); 39 printf ("\ncosh(x) expected "); 40 mpfr_out_str (stdout, 10, 0, ech, MPFR_RNDD); 41 printf ("\n got "); 42 mpfr_out_str (stdout, 10, 0, gch, MPFR_RNDD); 43 putchar ('\n'); 44 45 mpfr_clears (x, esh, gsh, ech, gch, (mpfr_ptr) 0); 46 exit (1); 47 } 48 49 /* check against sinh, cosh */ 50 static void 51 check (mpfr_t x, mpfr_rnd_t rnd) 52 { 53 mpfr_t s, c, sx, cx; 54 int isc, is, ic; 55 56 mpfr_inits2 (MPFR_PREC(x), s, c, sx, cx, (mpfr_ptr) 0); 57 58 isc = mpfr_sinh_cosh (sx, cx, x, rnd); 59 is = mpfr_sinh (s, x, rnd); 60 ic = mpfr_cosh (c, x, rnd); 61 62 if (!mpfr_equal_p (s, sx) || !mpfr_equal_p (c, cx)) 63 failed (x, s, sx, c, cx); 64 MPFR_ASSERTN (isc = is || ic); 65 66 mpfr_clears (s, c, sx, cx, (mpfr_ptr) 0); 67 } 68 69 static void 70 check_nans (void) 71 { 72 mpfr_t x, sh, ch; 73 74 mpfr_init2 (x, 123); 75 mpfr_init2 (sh, 123); 76 mpfr_init2 (ch, 123); 77 78 /* nan */ 79 mpfr_set_nan (x); 80 mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN); 81 MPFR_ASSERTN (mpfr_nan_p (sh)); 82 MPFR_ASSERTN (mpfr_nan_p (ch)); 83 84 /* +inf */ 85 mpfr_set_inf (x, 1); 86 mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN); 87 MPFR_ASSERTN (mpfr_inf_p (sh)); 88 MPFR_ASSERTN (mpfr_sgn (sh) > 0); 89 MPFR_ASSERTN (mpfr_inf_p (ch)); 90 MPFR_ASSERTN (mpfr_sgn (ch) > 0); 91 92 /* -inf */ 93 mpfr_set_inf (x, -1); 94 mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN); 95 MPFR_ASSERTN (mpfr_inf_p (sh)); 96 MPFR_ASSERTN (mpfr_sgn (sh) < 0); 97 MPFR_ASSERTN (mpfr_inf_p (ch)); 98 MPFR_ASSERTN (mpfr_sgn (ch) > 0); 99 100 mpfr_clear (x); 101 mpfr_clear (sh); 102 mpfr_clear (ch); 103 } 104 105 int 106 main (int argc, char *argv[]) 107 { 108 int i; 109 mpfr_t x; 110 111 tests_start_mpfr (); 112 113 check_nans (); 114 115 /* check against values given by sinh(x), cosh(x) */ 116 mpfr_init2 (x, 53); 117 mpfr_set_str (x, "FEDCBA987654321p-48", 16, MPFR_RNDN); 118 for (i = 0; i < 10; ++i) 119 { 120 /* x = i - x / 2 : boggle sign and bits */ 121 mpfr_ui_sub (x, i, x, MPFR_RNDD); 122 mpfr_div_2ui (x, x, 2, MPFR_RNDD); 123 124 check (x, MPFR_RNDN); 125 check (x, MPFR_RNDU); 126 check (x, MPFR_RNDD); 127 } 128 mpfr_clear (x); 129 130 tests_end_mpfr (); 131 return 0; 132 } 133 134 #else 135 136 int 137 main (void) 138 { 139 printf ("Warning! Test disabled for this MPFR version.\n"); 140 return 0; 141 } 142 143 #endif 144