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/* Public domain */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static struct test_vector {
double d;
int ndig;
char *expect;
} test_vectors[] = {
{ 0.1, 8, "0.1" },
{ 0.01, 8, "0.01" },
{ 0.001, 8, "0.001" },
{ 0.0001, 8, "0.0001" },
{ 0.00009, 8, "9e-05" },
{ 1.0, 8, "1" },
{ 1.1, 8, "1.1" },
{ 1.01, 8, "1.01" },
{ 1.001, 8, "1.001" },
{ 1.0001, 8, "1.0001" },
{ 1.00001, 8, "1.00001" },
{ 1.000001, 8, "1.000001" },
{ 0.0, 8, "0" },
{ -1.0, 8, "-1" },
{ 100000.0, 8, "100000" },
{ -100000.0, 8, "-100000" },
{ 123.456, 8, "123.456" },
{ 1e34, 8, "1e+34" },
{ 0.0, 0, NULL }
};
static int
dotest(struct test_vector *tv)
{
char buf[64];
gcvt(tv->d, tv->ndig, buf);
if (strcmp(tv->expect, buf) != 0) {
fprintf(stderr, "gcvt: expected %s, got %s\n", tv->expect, buf);
return 1;
}
return 0;
}
int
main(int argc, char *argv[])
{
int i, failures = 0;
for (i = 0; test_vectors[i].expect != NULL; i++) {
failures += dotest(&test_vectors[i]);
}
return failures;
}
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