divide

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv)
{
        if (argc != 2) {
                puts("Please supply number of iterations on the command line.");
                return(1);
        }

        int iters = atoi(argv[1]);

        unsigned int palette[256]; // 32 bits

        unsigned char screen[640 * 480];
        unsigned int outscreen[640 * 480];

        for (int i = 0; i < 256; i++)
                palette[i] = rand();

        for (int i = 0; i < 640*480; i++)
                screen[i] = rand() & 0xff;

        printf("Running %d iterations of palette-lookup conversion for 640x480 fullscreen\n", iters);

        for (int i = 0; i < iters; ++i)
                for (int p = 0; p < 640*480; ++p)
                        outscreen[p] = palette[screen[p]];

        return(0);
}