Hexdumping function?

[Benjamin Cutler]

I'm writing a conformance test for my implementation of powrprof.dll
that I've been working on, and something I'd like to do in the test is
dump the contents of some structs to the screen without trying to make
it pretty. I cobbled together the following function, but I'd like to
know if there's something like this already so I don't reinvent the wheel:

void hexdump(void *p, int len) {
        int i;
        long *src = (long *)p;
        len /= 4;
        for(i = 0; i < len; i++) {
                printf("%08lX", src[i]);
        }
}