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