1/* Test file for __gmpfr_isqrt and __gmpfr_cuberoot internal functions. 2 3Copyright 2007-2023 Free Software Foundation, Inc. 4Contributed by the AriC and Caramba 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 20https://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 "mpfr-test.h" 24 25static void 26tst_isqrt (unsigned long n, unsigned long r) 27{ 28 unsigned long i; 29 30 i = __gmpfr_isqrt (n); 31 if (i != r) 32 { 33 printf ("Error in __gmpfr_isqrt (%lu): got %lu instead of %lu\n", 34 n, i, r); 35 exit (1); 36 } 37} 38 39static void 40tst_icbrt (unsigned long n, unsigned long r) 41{ 42 unsigned long i; 43 44 i = __gmpfr_cuberoot (n); 45 if (i != r) 46 { 47 printf ("Error in __gmpfr_cuberoot (%lu): got %lu instead of %lu\n", 48 n, i, r); 49 exit (1); 50 } 51} 52 53int 54main (void) 55{ 56 unsigned long c, i; 57 58 tests_start_mpfr (); 59 60 tst_isqrt (0, 0); 61 tst_isqrt (1, 1); 62 tst_isqrt (2, 1); 63 for (i = 2; i <= 65535; i++) 64 { 65 tst_isqrt (i * i - 1, i - 1); 66 tst_isqrt (i * i, i); 67 } 68 tst_isqrt (4294967295UL, 65535); 69 70 tst_icbrt (0, 0); 71 tst_icbrt (1, 1); 72 tst_icbrt (2, 1); 73 tst_icbrt (3, 1); 74 for (i = 2; i <= 1625; i++) 75 { 76 c = i * i * i; 77 tst_icbrt (c - 4, i - 1); 78 tst_icbrt (c - 3, i - 1); 79 tst_icbrt (c - 2, i - 1); 80 tst_icbrt (c - 1, i - 1); 81 tst_icbrt (c, i); 82 tst_icbrt (c + 1, i); 83 tst_icbrt (c + 2, i); 84 tst_icbrt (c + 3, i); 85 tst_icbrt (c + 4, i); 86 } 87 tst_icbrt (4294967295UL, 1625); 88 89 tests_end_mpfr (); 90 return 0; 91} 92