diff options
Diffstat (limited to 'contrib/libgmp/mpq/tests/t-cmp_ui.c')
-rw-r--r-- | contrib/libgmp/mpq/tests/t-cmp_ui.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/contrib/libgmp/mpq/tests/t-cmp_ui.c b/contrib/libgmp/mpq/tests/t-cmp_ui.c new file mode 100644 index 0000000..f7b92ad --- /dev/null +++ b/contrib/libgmp/mpq/tests/t-cmp_ui.c @@ -0,0 +1,102 @@ +/* Test mpq_cmp_ui. + +Copyright (C) 1996 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 Library General Public License as published by +the Free Software Foundation; either version 2 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 Library General Public +License for more details. + +You should have received a copy of the GNU Library General Public License +along with the GNU MP Library; see the file COPYING.LIB. If not, write to +the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, +MA 02111-1307, USA. */ + +#include "gmp.h" +#include "gmp-impl.h" +#include "urandom.h" + +#define NUM(x) (&((x)->_mp_num)) +#define DEN(x) (&((x)->_mp_den)) + +#define SGN(x) ((x) < 0 ? -1 : (x) > 0 ? 1 : 0) + +ref_mpq_cmp_ui (a, bn, bd) + mpq_t a; + unsigned long int bn, bd; +{ + mpz_t ai, bi; + int cc; + + mpz_init (ai); + mpz_init (bi); + + mpz_mul_ui (ai, NUM (a), bd); + mpz_mul_ui (bi, DEN (a), bn); + 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 + +main (argc, argv) + int argc; + char **argv; +{ + mpq_t a, b; + mp_size_t size; + int reps = 100000; + int i; + int cc, ccref; + unsigned long int bn, bd; + + 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); + + mpz_random2 (NUM (b), 1); + do + { + mpz_random2 (DEN (b), 1); + } + while (mpz_cmp_ui (DEN (b), 0) == 0); + + mpq_canonicalize (a); + mpq_canonicalize (b); + + bn = mpz_get_ui (NUM (b)); + bd = mpz_get_ui (DEN (b)); + + ccref = ref_mpq_cmp_ui (a, bn, bd); + cc = mpq_cmp_ui (a, bn, bd); + + if (SGN (ccref) != SGN (cc)) + abort (); + } + + exit (0); +} |