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/* $OpenBSD: bitstring_test.c,v 1.5 2003/07/31 21:48:02 deraadt Exp $ */
/* $NetBSD: bitstring_test.c,v 1.4 1995/04/29 05:44:35 cgd Exp $ */
/*
* this is a simple program to test bitstring.h
* inspect the output, you should notice problems
* choose the ATT or BSD flavor
*/
/* #define ATT /*- */
#define BSD /*-*/
/*
* include the following define if you want the program to link. this
* corrects a misspeling in bitstring.h
*/
#define _bitstr_size bitstr_size
#include <stdio.h>
#include <stdlib.h>
/* #ifdef NOTSOGOOD */
#include "bitstring.h"
/* #else */
/* #include "gbitstring.h" */
/* #endif */
int TEST_LENGTH;
#define DECL_TEST_LENGTH 37 /* a mostly random number */
static void
clearbits(bitstr_t *b, int n)
{
register int i = bitstr_size(n);
while (i--)
*(b + i) = 0;
}
static void
printbits(bitstr_t *b, int n)
{
register int i;
int jc, js;
bit_ffc(b, n, &jc);
bit_ffs(b, n, &js);
(void) printf("%3d %3d ", jc, js);
for (i = 0; i < n; i++) {
(void) putchar((bit_test(b, i) ? '1' : '0'));
}
(void) putchar('\n');
}
int
main(int argc, char *argv[])
{
int i;
bitstr_t *bs;
bitstr_t bit_decl(bss, DECL_TEST_LENGTH);
if (argc > 1)
TEST_LENGTH = atoi(argv[1]);
else
TEST_LENGTH = DECL_TEST_LENGTH;
if (TEST_LENGTH < 4) {
fprintf(stderr, "TEST_LENGTH must be at least 4, but it is %d\n",
TEST_LENGTH);
exit(1);
}
(void) printf("Testing with TEST_LENGTH = %d\n\n", TEST_LENGTH);
(void) printf("test _bit_byte, _bit_mask, and bitstr_size\n");
(void) printf(" i _bit_byte(i) _bit_mask(i) bitstr_size(i)\n");
for (i = 0; i < TEST_LENGTH; i++) {
(void) printf("%3d%15d%15d%15d\n",
i, _bit_byte(i), _bit_mask(i), bitstr_size(i));
}
bs = bit_alloc(TEST_LENGTH);
clearbits(bs, TEST_LENGTH);
(void) printf("\ntest bit_alloc, clearbits, bit_ffc, bit_ffs\n");
(void) printf("be: 0 -1 ");
for (i = 0; i < TEST_LENGTH; i++)
(void) putchar('0');
(void) printf("\nis: ");
printbits(bs, TEST_LENGTH);
(void) printf("\ntest bit_set\n");
for (i = 0; i < TEST_LENGTH; i += 3) {
bit_set(bs, i);
}
(void) printf("be: 1 0 ");
for (i = 0; i < TEST_LENGTH; i++)
(void) putchar(*("100" + (i % 3)));
(void) printf("\nis: ");
printbits(bs, TEST_LENGTH);
(void) printf("\ntest bit_clear\n");
for (i = 0; i < TEST_LENGTH; i += 6) {
bit_clear(bs, i);
}
(void) printf("be: 0 3 ");
for (i = 0; i < TEST_LENGTH; i++)
(void) putchar(*("000100" + (i % 6)));
(void) printf("\nis: ");
printbits(bs, TEST_LENGTH);
(void) printf("\ntest bit_test using previous bitstring\n");
(void) printf(" i bit_test(i)\n");
for (i = 0; i < TEST_LENGTH; i++) {
(void) printf("%3d%15d\n",
i, bit_test(bs, i));
}
clearbits(bs, TEST_LENGTH);
(void) printf("\ntest clearbits\n");
(void) printf("be: 0 -1 ");
for (i = 0; i < TEST_LENGTH; i++)
(void) putchar('0');
(void) printf("\nis: ");
printbits(bs, TEST_LENGTH);
(void) printf("\ntest bit_nset and bit_nclear\n");
bit_nset(bs, 1, TEST_LENGTH - 2);
(void) printf("be: 0 1 0");
for (i = 0; i < TEST_LENGTH - 2; i++)
(void) putchar('1');
(void) printf("0\nis: ");
printbits(bs, TEST_LENGTH);
bit_nclear(bs, 2, TEST_LENGTH - 3);
(void) printf("be: 0 1 01");
for (i = 0; i < TEST_LENGTH - 4; i++)
(void) putchar('0');
(void) printf("10\nis: ");
printbits(bs, TEST_LENGTH);
bit_nclear(bs, 0, TEST_LENGTH - 1);
(void) printf("be: 0 -1 ");
for (i = 0; i < TEST_LENGTH; i++)
(void) putchar('0');
(void) printf("\nis: ");
printbits(bs, TEST_LENGTH);
bit_nset(bs, 0, TEST_LENGTH - 2);
(void) printf("be: %3d 0 ", TEST_LENGTH - 1);
for (i = 0; i < TEST_LENGTH - 1; i++)
(void) putchar('1');
putchar('0');
(void) printf("\nis: ");
printbits(bs, TEST_LENGTH);
bit_nclear(bs, 0, TEST_LENGTH - 1);
(void) printf("be: 0 -1 ");
for (i = 0; i < TEST_LENGTH; i++)
(void) putchar('0');
(void) printf("\nis: ");
printbits(bs, TEST_LENGTH);
(void) printf("\n");
(void) printf("first 1 bit should move right 1 position each line\n");
for (i = 0; i < TEST_LENGTH; i++) {
bit_nclear(bs, 0, TEST_LENGTH - 1);
bit_nset(bs, i, TEST_LENGTH - 1);
(void) printf("%3d ", i);
printbits(bs, TEST_LENGTH);
}
(void) printf("\n");
(void) printf("first 0 bit should move right 1 position each line\n");
for (i = 0; i < TEST_LENGTH; i++) {
bit_nset(bs, 0, TEST_LENGTH - 1);
bit_nclear(bs, i, TEST_LENGTH - 1);
(void) printf("%3d ", i);
printbits(bs, TEST_LENGTH);
}
(void) printf("\n");
(void) printf("first 0 bit should move left 1 position each line\n");
for (i = 0; i < TEST_LENGTH; i++) {
bit_nclear(bs, 0, TEST_LENGTH - 1);
bit_nset(bs, 0, TEST_LENGTH - 1 - i);
(void) printf("%3d ", i);
printbits(bs, TEST_LENGTH);
}
(void) printf("\n");
(void) printf("first 1 bit should move left 1 position each line\n");
for (i = 0; i < TEST_LENGTH; i++) {
bit_nset(bs, 0, TEST_LENGTH - 1);
bit_nclear(bs, 0, TEST_LENGTH - 1 - i);
(void) printf("%3d ", i);
printbits(bs, TEST_LENGTH);
}
(void) printf("\n");
(void) printf("0 bit should move right 1 position each line\n");
for (i = 0; i < TEST_LENGTH; i++) {
bit_nset(bs, 0, TEST_LENGTH - 1);
bit_nclear(bs, i, i);
(void) printf("%3d ", i);
printbits(bs, TEST_LENGTH);
}
(void) printf("\n");
(void) printf("1 bit should move right 1 position each line\n");
for (i = 0; i < TEST_LENGTH; i++) {
bit_nclear(bs, 0, TEST_LENGTH - 1);
bit_nset(bs, i, i);
(void) printf("%3d ", i);
printbits(bs, TEST_LENGTH);
}
(void) free(bs);
(void) exit(0);
}
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