Function Pointers

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WedNESday
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Function Pointers

Post by WedNESday » Mon Nov 24, 2008 6:39 am

Would these be faster than a bigger lookup table? (I'm talking about 65816 emulation here, changing the pointers of functions when switching between Native and Emulation mode)

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blargg
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Post by blargg » Mon Nov 24, 2008 10:43 am

You haven't provided enough information. Probably better to learn how to measure performance and compare the two on your machine. This is a good start:

Code: Select all

#include <stdio.h>
#include <time.h>
int main()
{
    clock_t start = clock();
    unsigned n;
    for ( n = 1000000; --n; )
        /* do something here */
    printf( "time taken: %f\n", (double) (clock() - start) );
    return 0;
}

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