C64-dev/reference/powerc-re/tests/bench.c

#include <stdio.h>
int arr[64];
char *jp;
unsigned now()
{
    return (jp[0] << 8) + jp[1];
}
add(a, b)
int a, b;
{
    return a + b;
}
main()
{
    unsigned t0, t1;
    int i, j, s;

    jp = (char *) 0xa1;
    t0 = now();
    s = 0;
    for (i = 0; i < 400; i++)
        s = add(s, i);
    t1 = now();
    printf("calls %u  s=%d\n", t1 - t0, s);

    t0 = now();
    for (j = 0; j < 20; j++)
        for (i = 0; i < 64; i++)
            arr[i] = arr[i] + i + j;
    t1 = now();
    printf("array %u  a=%d\n", t1 - t0, arr[10]);

    t0 = now();
    s = 0;
    for (i = 0; i < 1000; i++) {
        if (i > 500) s = s + 1;
        else s = s + 2;
    }
    t1 = now();
    printf("branch %u  s=%d\n", t1 - t0, s);

    t0 = now();
    s = 1;
    for (i = 0; i < 300; i++)
        s = (s * 3 + i) % 1000;
    t1 = now();
    printf("arith %u  s=%d\n", t1 - t0, s);
}