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/*
* Copyright 2015 Kevin M Greenan
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY
* THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* vi: set noai tw=79 ts=4 sw=4:
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rs_galois.h>
int test_inverse()
{
int *uniq = (int*)malloc(sizeof(int)*FIELD_SIZE);
int i = 0;
memset(uniq, 0, sizeof(int)*FIELD_SIZE);
rs_galois_init_tables();
for (i = 1; i < FIELD_SIZE; i++) {
if (uniq[i] != 0) {
fprintf(stderr, "Duplicate %d: %d , %d \n", i, uniq[i], rs_galois_inverse(i));
return 1;
}
uniq[i] = rs_galois_inverse(i);
int one = rs_galois_mult(rs_galois_inverse(i), i);
if (one != 1) {
fprintf(stderr, "%d is not the inverse of %d = %d\n", rs_galois_inverse(i), i, one);
return 1;
}
}
return 0;
}
int main(int argc, char **argv)
{
int ret = 0;
if (test_inverse() != 0) {
fprintf(stderr, "test_inverse() failed\n");
ret = 1;
}
return ret;
}
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