1 /* Test file for mpfr_add_si, mpfr_sub_si, mpfr_si_sub, mpfr_mul_si, 2 mpfr_div_si, mpfr_si_div 3 4 Copyright 2004, 2006-2018 Free Software Foundation, Inc. 5 Contributed by the AriC and Caramba projects, INRIA. 6 7 This file is part of the GNU MPFR Library. 8 9 The GNU MPFR Library is free software; you can redistribute it and/or modify 10 it under the terms of the GNU Lesser General Public License as published by 11 the Free Software Foundation; either version 3 of the License, or (at your 12 option) any later version. 13 14 The GNU MPFR Library is distributed in the hope that it will be useful, but 15 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17 License for more details. 18 19 You should have received a copy of the GNU Lesser General Public License 20 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see 21 http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., 22 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ 23 24 #include "mpfr-test.h" 25 26 /* TODO: Add generic tests for mpfr_si_sub and mpfr_si_div. 27 tgeneric_ui.c should probably be replaced by tgeneric.c, 28 with some changes, since tgeneric.c does more checks. */ 29 30 #define PRINT_ERROR1(s,i,z,exp) \ 31 do \ 32 { \ 33 printf ("Error for " s " and i=%d\n", i); \ 34 printf ("Expected %s\n", exp); \ 35 printf ("Got "); mpfr_out_str (stdout, 16, 0, z, MPFR_RNDN); \ 36 putchar ('\n'); \ 37 exit(1); \ 38 } \ 39 while (0) 40 41 const struct { 42 const char * op1; 43 long int op2; 44 const char * res_add; 45 const char * res_sub; 46 const char * res_mul; 47 const char * res_div; 48 } tab[] = { 49 {"10", 0x1, "11", "0F", "10", "10"}, 50 {"1", -1, "0", "2", "-1", "-1"}, 51 {"17.42", -0x17, "0.42", "2E.42", "-216.ee", "-1.02de9bd37a6f4"}, 52 {"-1024.0", -0x16, "-103A", "-100E", "16318", "bb.d1745d1745d0"} 53 }; 54 55 static void 56 check_invert (void) 57 { 58 mpfr_t x; 59 mpfr_init2 (x, MPFR_PREC_MIN); 60 61 mpfr_set_ui (x, 0xC, MPFR_RNDN); 62 mpfr_si_sub (x, -1, x, MPFR_RNDD); /* -0001 - 1100 = - 1101 --> -1 0000 */ 63 /* If MPFR_PREC_MIN = 2, then x is first set to 12 exactly, then we get 64 -13 which is rounded down to -16. 65 If MPFR_PREC_MIN = 1, then x is first set to 16 exactly, then we get 66 -17 which is rounded down to -32. */ 67 if ((MPFR_PREC_MIN == 2 && mpfr_cmp_si (x, -0x10)) || 68 (MPFR_PREC_MIN == 1 && mpfr_cmp_si (x, -0x20))) 69 { 70 printf ("Special rounding error\n"); 71 exit (1); 72 } 73 mpfr_clear (x); 74 } 75 76 #define TEST_FUNCTION mpfr_add_si 77 #define TEST_FUNCTION_NAME "mpfr_add_si" 78 #define INTEGER_TYPE long 79 #define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), 1, RANDS) 80 #define test_generic_ui test_generic_add_si 81 #include "tgeneric_ui.c" 82 83 #define TEST_FUNCTION mpfr_sub_si 84 #define TEST_FUNCTION_NAME "mpfr_sub_si" 85 #define INTEGER_TYPE long 86 #define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), 1, RANDS) 87 #define test_generic_ui test_generic_sub_si 88 #include "tgeneric_ui.c" 89 90 #define TEST_FUNCTION mpfr_mul_si 91 #define TEST_FUNCTION_NAME "mpfr_mul_si" 92 #define INTEGER_TYPE long 93 #define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), 1, RANDS) 94 #define test_generic_ui test_generic_mul_si 95 #include "tgeneric_ui.c" 96 97 #define TEST_FUNCTION mpfr_div_si 98 #define TEST_FUNCTION_NAME "mpfr_div_si" 99 #define INTEGER_TYPE long 100 #define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), 1, RANDS) 101 #define test_generic_ui test_generic_div_si 102 #include "tgeneric_ui.c" 103 104 105 int 106 main (int argc, char *argv[]) 107 { 108 mpfr_t x, z; 109 int y; 110 int i; 111 112 tests_start_mpfr (); 113 mpfr_inits2 (53, x, z, (mpfr_ptr) 0); 114 for(i = 0 ; i < numberof (tab) ; i++) 115 { 116 mpfr_set_str (x, tab[i].op1, 16, MPFR_RNDN); 117 y = tab[i].op2; 118 mpfr_add_si (z, x, y, MPFR_RNDZ); 119 if (mpfr_cmp_str (z, tab[i].res_add, 16, MPFR_RNDN)) 120 PRINT_ERROR1 ("add_si", i, z, tab[i].res_add); 121 mpfr_sub_si (z, x, y, MPFR_RNDZ); 122 if (mpfr_cmp_str (z, tab[i].res_sub, 16, MPFR_RNDN)) 123 PRINT_ERROR1 ("sub_si", i, z, tab[i].res_sub); 124 mpfr_si_sub (z, y, x, MPFR_RNDZ); 125 mpfr_neg (z, z, MPFR_RNDZ); 126 if (mpfr_cmp_str (z, tab[i].res_sub, 16, MPFR_RNDN)) 127 PRINT_ERROR1 ("si_sub", i, z, tab[i].res_sub); 128 mpfr_mul_si (z, x, y, MPFR_RNDZ); 129 if (mpfr_cmp_str (z, tab[i].res_mul, 16, MPFR_RNDN)) 130 PRINT_ERROR1 ("mul_si", i, z, tab[i].res_mul); 131 mpfr_div_si (z, x, y, MPFR_RNDZ); 132 if (mpfr_cmp_str (z, tab[i].res_div, 16, MPFR_RNDN)) 133 PRINT_ERROR1 ("div_si", i, z, tab[i].res_div); 134 } 135 mpfr_set_str1 (x, "1"); 136 mpfr_si_div (z, 1024, x, MPFR_RNDN); 137 if (mpfr_cmp_str1 (z, "1024")) 138 PRINT_ERROR1 ("si_div", i, z, "1024"); 139 mpfr_si_div (z, -1024, x, MPFR_RNDN); 140 if (mpfr_cmp_str1 (z, "-1024")) 141 PRINT_ERROR1 ("si_div", i, z, "-1024"); 142 143 mpfr_clears (x, z, (mpfr_ptr) 0); 144 145 check_invert (); 146 147 test_generic_add_si (MPFR_PREC_MIN, 200, 17); 148 test_generic_sub_si (MPFR_PREC_MIN, 200, 17); 149 test_generic_mul_si (MPFR_PREC_MIN, 200, 17); 150 test_generic_div_si (MPFR_PREC_MIN, 200, 17); 151 152 tests_end_mpfr (); 153 return 0; 154 } 155