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#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <matio.h>
int main (void)
{
char buf1[1024];
char buf2[1024];
char *fp_fmt[] = {
"%1.1f",
"%-1.5f",
"%1.5f",
"%123.9f",
"%10.5f",
"% 10.5f",
"%+22.9f",
"%+4.9f",
"%01.3f",
"%4f",
"%3.1f",
"%3.2f",
"%.0f",
"%f",
"-16.16f",
NULL
};
double fp_nums[] = { 6442452944.1234, -1.5, 134.21, 91340.2, 341.1234, 203.9, 0.96, 0.996,
0.9996, 1.996, 4.136, 5.030201, 0.00205,
/* END LIST */ 0};
char *int_fmt[] = {
"%-1.5d",
"%1.5d",
"%123.9d",
"%5.5d",
"%10.5d",
"% 10.5d",
"%+22.33d",
"%01.3d",
"%4d",
"%d",
NULL
};
long int_nums[] = { -1, 134, 91340, 341, 0203, 0};
char *str_fmt[] = {
"10.5s",
"5.10s",
"10.1s",
"0.10s",
"10.0s",
"1.10s",
"%s",
"%.1s",
"%.10s",
"%10s",
NULL
};
char *str_vals[] = {"hello", "a", "", "a longer string", NULL};
int x, y;
int fail = 0;
int num = 0;
printf ("Testing snprintf format codes against system sprintf...\n");
for (x = 0; fp_fmt[x] ; x++) {
for (y = 0; fp_nums[y] != 0 ; y++) {
int l1 = mat_snprintf(NULL, 0, fp_fmt[x], fp_nums[y]);
int l2 = mat_snprintf(buf1, sizeof(buf1), fp_fmt[x], fp_nums[y]);
sprintf (buf2, fp_fmt[x], fp_nums[y]);
if (strcmp (buf1, buf2)) {
printf("snprintf doesn't match Format: %s\n\tsnprintf = [%s]\n\t sprintf = [%s]\n",
fp_fmt[x], buf1, buf2);
fail++;
}
if (l1 != l2) {
printf("snprintf l1 != l2 (%d %d) %s\n", l1, l2, fp_fmt[x]);
fail++;
}
num++;
}
}
for (x = 0; int_fmt[x] ; x++) {
for (y = 0; int_nums[y] != 0 ; y++) {
int l1 = mat_snprintf(NULL, 0, int_fmt[x], int_nums[y]);
int l2 = mat_snprintf(buf1, sizeof(buf1), int_fmt[x], int_nums[y]);
sprintf (buf2, int_fmt[x], int_nums[y]);
if (strcmp (buf1, buf2)) {
printf("snprintf doesn't match Format: %s\n\tsnprintf = [%s]\n\t sprintf = [%s]\n",
int_fmt[x], buf1, buf2);
fail++;
}
if (l1 != l2) {
printf("snprintf l1 != l2 (%d %d) %s\n", l1, l2, int_fmt[x]);
fail++;
}
num++;
}
}
for (x = 0; str_fmt[x] ; x++) {
for (y = 0; str_vals[y] != 0 ; y++) {
int l1 = mat_snprintf(NULL, 0, str_fmt[x], str_vals[y]);
int l2 = mat_snprintf(buf1, sizeof(buf1), str_fmt[x], str_vals[y]);
sprintf (buf2, str_fmt[x], str_vals[y]);
if (strcmp (buf1, buf2)) {
printf("snprintf doesn't match Format: %s\n\tsnprintf = [%s]\n\t sprintf = [%s]\n",
str_fmt[x], buf1, buf2);
fail++;
}
if (l1 != l2) {
printf("snprintf l1 != l2 (%d %d) %s\n", l1, l2, str_fmt[x]);
fail++;
}
num++;
}
}
printf ("%d tests failed out of %d.\n", fail, num);
printf("seeing how many digits we support\n");
{
double v0 = 0.12345678901234567890123456789012345678901;
for (x=0; x<100; x++) {
double p = pow(10, x);
double r = v0*p;
mat_snprintf(buf1, sizeof(buf1), "%1.1f", r);
sprintf(buf2, "%1.1f", r);
if (strcmp(buf1, buf2)) {
printf("we seem to support %d digits\n", x-1);
break;
}
}
}
return 0;
}
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