| /* Test mpq_cmp. |
| |
| Copyright 1996, 2001 Free Software Foundation, Inc. |
| |
| This file is part of the GNU MP Library. |
| |
| The GNU MP Library is free software; you can redistribute it and/or modify |
| it under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or (at your |
| option) any later version. |
| |
| The GNU MP Library is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "gmp.h" |
| #include "gmp-impl.h" |
| #include "tests.h" |
| |
| #define NUM(x) (&((x)->_mp_num)) |
| #define DEN(x) (&((x)->_mp_den)) |
| |
| #define SGN(x) ((x) < 0 ? -1 : (x) > 0 ? 1 : 0) |
| |
| int |
| ref_mpq_cmp (mpq_t a, mpq_t b) |
| { |
| mpz_t ai, bi; |
| int cc; |
| |
| mpz_init (ai); |
| mpz_init (bi); |
| |
| mpz_mul (ai, NUM (a), DEN (b)); |
| mpz_mul (bi, NUM (b), DEN (a)); |
| cc = mpz_cmp (ai, bi); |
| mpz_clear (ai); |
| mpz_clear (bi); |
| return cc; |
| } |
| |
| #ifndef SIZE |
| #define SIZE 8 /* increasing this lowers the probabilty of finding an error */ |
| #endif |
| |
| int |
| main (int argc, char **argv) |
| { |
| mpq_t a, b; |
| mp_size_t size; |
| int reps = 10000; |
| int i; |
| int cc, ccref; |
| |
| tests_start (); |
| |
| if (argc == 2) |
| reps = atoi (argv[1]); |
| |
| mpq_init (a); |
| mpq_init (b); |
| |
| for (i = 0; i < reps; i++) |
| { |
| size = urandom () % SIZE - SIZE/2; |
| mpz_random2 (NUM (a), size); |
| do |
| { |
| size = urandom () % SIZE - SIZE/2; |
| mpz_random2 (DEN (a), size); |
| } |
| while (mpz_cmp_ui (DEN (a), 0) == 0); |
| |
| size = urandom () % SIZE - SIZE/2; |
| mpz_random2 (NUM (b), size); |
| do |
| { |
| size = urandom () % SIZE - SIZE/2; |
| mpz_random2 (DEN (b), size); |
| } |
| while (mpz_cmp_ui (DEN (b), 0) == 0); |
| |
| mpq_canonicalize (a); |
| mpq_canonicalize (b); |
| |
| ccref = ref_mpq_cmp (a, b); |
| cc = mpq_cmp (a, b); |
| |
| if (SGN (ccref) != SGN (cc)) |
| abort (); |
| } |
| |
| mpq_clear (a); |
| mpq_clear (b); |
| |
| tests_end (); |
| exit (0); |
| } |