1 /* Test file for mpfr_sinh. 2 3 Copyright 2001-2002, 2004, 2006-2023 Free Software Foundation, Inc. 4 Contributed by the AriC and Caramba 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 https://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 "mpfr-test.h" 24 25 #define TEST_FUNCTION mpfr_sinh 26 #define TEST_RANDOM_EMIN -36 27 #define TEST_RANDOM_EMAX 36 28 #include "tgeneric.c" 29 30 static void 31 special (void) 32 { 33 mpfr_t x; 34 int i; 35 36 mpfr_init (x); 37 38 mpfr_set_nan (x); 39 mpfr_sinh (x, x, MPFR_RNDN); 40 MPFR_ASSERTN(mpfr_nan_p (x)); 41 42 mpfr_set_inf (x, 1); 43 mpfr_sinh (x, x, MPFR_RNDN); 44 MPFR_ASSERTN(mpfr_inf_p (x) && mpfr_sgn (x) > 0); 45 mpfr_set_inf (x, -1); 46 mpfr_sinh (x, x, MPFR_RNDN); 47 MPFR_ASSERTN(mpfr_inf_p (x) && mpfr_sgn (x) < 0); 48 49 mpfr_set_prec (x, 10); 50 mpfr_set_str_binary (x, "-0.1001011001"); 51 mpfr_sinh (x, x, MPFR_RNDN); 52 MPFR_ASSERTN(mpfr_cmp_si_2exp (x, -159, -8) == 0); 53 54 /* corner case */ 55 mpfr_set_prec (x, 2); 56 mpfr_set_str_binary (x, "1E-6"); 57 mpfr_sinh (x, x, MPFR_RNDN); 58 MPFR_ASSERTN(mpfr_cmp_ui_2exp (x, 1, -6) == 0); 59 60 mpfr_clear_flags (); 61 mpfr_set_str_binary (x, "1E1000000000"); 62 i = mpfr_sinh (x, x, MPFR_RNDN); 63 MPFR_ASSERTN (MPFR_IS_INF (x) && MPFR_IS_POS (x)); 64 MPFR_ASSERTN (mpfr_overflow_p ()); 65 MPFR_ASSERTN (i == 1); 66 67 mpfr_clear_flags (); 68 mpfr_set_str_binary (x, "-1E1000000000"); 69 i = mpfr_sinh (x, x, MPFR_RNDN); 70 MPFR_ASSERTN (MPFR_IS_INF (x) && MPFR_IS_NEG (x)); 71 MPFR_ASSERTN (mpfr_overflow_p () && !mpfr_underflow_p ()); 72 MPFR_ASSERTN (i == -1); 73 74 mpfr_clear_flags (); 75 mpfr_set_str_binary (x, "-1E1000000000"); 76 i = mpfr_sinh (x, x, MPFR_RNDD); 77 MPFR_ASSERTN (MPFR_IS_INF (x) && MPFR_IS_NEG (x)); 78 MPFR_ASSERTN (mpfr_overflow_p () && !mpfr_underflow_p ()); 79 MPFR_ASSERTN (i == -1); 80 81 mpfr_clear_flags (); 82 mpfr_set_str_binary (x, "-1E1000000000"); 83 i = mpfr_sinh (x, x, MPFR_RNDU); 84 MPFR_ASSERTN (!MPFR_IS_INF (x) && MPFR_IS_NEG (x)); 85 MPFR_ASSERTN (mpfr_overflow_p () && !mpfr_underflow_p ()); 86 MPFR_ASSERTN (i == 1); 87 88 mpfr_clear (x); 89 } 90 91 /* exercise mpfr_sinh near the overflow limit */ 92 static void 93 coverage (void) 94 { 95 #if _MPFR_EXP_FORMAT >= 3 && ULONG_MAX == 0xffffffffffffffff 96 mpfr_t x, y; 97 int inex; 98 mpfr_exp_t emax; 99 100 emax = mpfr_get_emax (); 101 mpfr_init2 (x, 64); 102 mpfr_init2 (y, 64); 103 104 MPFR_ASSERTN(mpfr_get_emax_max () == 4611686018427387903UL); /* 2^62-1 */ 105 set_emax (mpfr_get_emax_max ()); 106 107 mpfr_set_ui (x, 3196577161300663915UL, MPFR_RNDN); 108 mpfr_clear_overflow (); 109 /* exp(x) overflows, cosh(x/2)*sinh(x/2) does not overflow, 110 but 2*cosh(x/2)*sinh(x/2) overflows */ 111 inex = mpfr_sinh (y, x, MPFR_RNDZ); 112 MPFR_ASSERTN(mpfr_cmp_ui_2exp (y, 18446744073709551615UL, 4611686018427387839UL) == 0); 113 MPFR_ASSERTN(inex < 0); 114 MPFR_ASSERTN(mpfr_overflow_p ()); 115 116 mpfr_set_prec (x, 65); 117 mpfr_set_str (x, "3196577161300663914.5", 10, MPFR_RNDN); 118 mpfr_clear_overflow (); 119 /* exp(x) overflows, cosh(x/2)*sinh(x/2) does not overflow, 120 and 2*cosh(x/2)*sinh(x/2) does not overflow */ 121 inex = mpfr_sinh (y, x, MPFR_RNDN); 122 MPFR_ASSERTN(mpfr_cmp_ui_2exp (y, 11795642775994293059UL, 4611686018427387839UL) == 0); 123 MPFR_ASSERTN(inex > 0); 124 MPFR_ASSERTN(!mpfr_overflow_p ()); 125 126 mpfr_clear (x); 127 mpfr_clear (y); 128 set_emax (emax); 129 #endif 130 } 131 132 int 133 main (int argc, char *argv[]) 134 { 135 tests_start_mpfr (); 136 137 coverage (); 138 special (); 139 140 test_generic (MPFR_PREC_MIN, 100, 100); 141 142 data_check ("data/sinh", mpfr_sinh, "mpfr_sinh"); 143 bad_cases (mpfr_sinh, mpfr_asinh, "mpfr_sinh", 256, -256, 255, 144 4, 128, 800, 100); 145 146 tests_end_mpfr (); 147 return 0; 148 } 149