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/* Test mpq_add and mpq_sub.
Copyright 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 "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gmp.h"
#include "gmp-impl.h"
#include "tests.h"
void
check_all (mpq_ptr x, mpq_ptr y, mpq_ptr want_add, mpq_ptr want_sub)
{
mpq_t got;
int neg_x, neg_y, swap;
mpq_init (got);
MPQ_CHECK_FORMAT (want_add);
MPQ_CHECK_FORMAT (want_sub);
MPQ_CHECK_FORMAT (x);
MPQ_CHECK_FORMAT (y);
for (swap = 0; swap <= 1; swap++)
{
for (neg_x = 0; neg_x <= 1; neg_x++)
{
for (neg_y = 0; neg_y <= 1; neg_y++)
{
mpq_add (got, x, y);
MPQ_CHECK_FORMAT (got);
if (! mpq_equal (got, want_add))
{
printf ("mpq_add wrong\n");
mpq_trace (" x ", x);
mpq_trace (" y ", y);
mpq_trace (" got ", got);
mpq_trace (" want", want_add);
abort ();
}
mpq_sub (got, x, y);
MPQ_CHECK_FORMAT (got);
if (! mpq_equal (got, want_sub))
{
printf ("mpq_sub wrong\n");
mpq_trace (" x ", x);
mpq_trace (" y ", y);
mpq_trace (" got ", got);
mpq_trace (" want", want_sub);
abort ();
}
mpq_neg (y, y);
mpq_swap (want_add, want_sub);
}
mpq_neg (x, x);
mpq_swap (want_add, want_sub);
mpq_neg (want_add, want_add);
mpq_neg (want_sub, want_sub);
}
mpq_swap (x, y);
mpq_neg (want_sub, want_sub);
}
mpq_clear (got);
}
void
check_data (void)
{
static const struct {
const char *x;
const char *y;
const char *want_add;
const char *want_sub;
} data[] = {
{ "0", "0", "0", "0" },
{ "1", "0", "1", "1" },
{ "1", "1", "2", "0" },
{ "1/2", "1/2", "1", "0" },
{ "5/6", "14/15", "53/30", "-1/10" },
};
mpq_t x, y, want_add, want_sub;
int i;
mpq_init (x);
mpq_init (y);
mpq_init (want_add);
mpq_init (want_sub);
for (i = 0; i < numberof (data); i++)
{
mpq_set_str_or_abort (x, data[i].x, 0);
mpq_set_str_or_abort (y, data[i].y, 0);
mpq_set_str_or_abort (want_add, data[i].want_add, 0);
mpq_set_str_or_abort (want_sub, data[i].want_sub, 0);
check_all (x, y, want_add, want_sub);
}
mpq_clear (x);
mpq_clear (y);
mpq_clear (want_add);
mpq_clear (want_sub);
}
void
check_rand (void)
{
mpq_t x, y, want_add, want_sub;
int i;
gmp_randstate_ptr rands = RANDS;
mpq_init (x);
mpq_init (y);
mpq_init (want_add);
mpq_init (want_sub);
for (i = 0; i < 500; i++)
{
mpz_errandomb (mpq_numref(x), rands, 512L);
mpz_errandomb_nonzero (mpq_denref(x), rands, 512L);
mpq_canonicalize (x);
mpz_errandomb (mpq_numref(y), rands, 512L);
mpz_errandomb_nonzero (mpq_denref(y), rands, 512L);
mpq_canonicalize (y);
refmpq_add (want_add, x, y);
refmpq_sub (want_sub, x, y);
check_all (x, y, want_add, want_sub);
}
mpq_clear (x);
mpq_clear (y);
mpq_clear (want_add);
mpq_clear (want_sub);
}
int
main (void)
{
tests_start ();
check_data ();
check_rand ();
tests_end ();
exit (0);
}
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