forked from Github_Repos/cvw
74 lines
1.2 KiB
C
74 lines
1.2 KiB
C
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/* testgen.c */
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/* Written 7/21/2022 by Cedar Turek
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This program creates test vectors for modulo
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calculation from integer divide.
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*/
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/* #includes */
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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/* Constants */
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#define ENTRIES 10
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#define RANDOM_VECS 500
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/* Prototypes */
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void output(FILE *fptr, long a, long b, long rem);
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void printhex(FILE *fptr, long x);
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double random_input(void);
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/* Main */
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void main(void)
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{
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FILE *fptr;
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long a, b, rem;
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long list[ENTRIES] = {1, 3, 5, 18, 25, 33, 42, 65, 103, 255};
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int i, j;
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if ((fptr = fopen("modtestvectors","w")) == NULL) {
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fprintf(stderr, "Couldn't write testvectors file\n");
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exit(1);
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}
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for (i=0; i<ENTRIES; i++) {
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b = list[i];
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for (j=0; j<ENTRIES; j++) {
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a = list[j];
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rem = a%b;
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output(fptr, a, b, rem);
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}
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}
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fclose(fptr);
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}
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/* Functions */
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void output(FILE *fptr, long a, long b, long rem)
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{
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printhex(fptr, a);
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fprintf(fptr, "_");
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printhex(fptr, b);
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fprintf(fptr, "_");
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printhex(fptr, rem);
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fprintf(fptr, "\n");
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}
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void printhex(FILE *fptr, long m)
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{
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fprintf(fptr, "%016llx", m);
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}
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double random_input(void)
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{
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return 1.0 + rand()/32767.0;
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}
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