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/* div-test.c
**
** This program tests the division and modulo operators
** and the div() library function.
*/
#include <cc65.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
static bool test (int dividend, int divisor)
{
div_t result;
result = div (dividend, divisor);
printf ("%+d/%+d= %+d, %+d%%%+d= %+d, div()= %+d, %+d\n",
dividend, divisor, dividend / divisor,
dividend, divisor, dividend % divisor,
result.quot, result.rem);
return result.quot * divisor + result.rem != dividend;
}
int main (void)
{
bool t;
printf ("\nTest of division and modulus operations:\n\n");
t = test (+40, +3) ||
test (+40, -3) ||
test (-40, +3) ||
test (-40, -3);
if (t) {
printf ("\nThe div() function made a wrong result!\n");
}
if (doesclrscrafterexit ()) {
printf ("\nTap the Return key to quit. ");
getchar ();
}
return (int)t;
}
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