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Which loop is faster?

Name: Anonymous 2012-01-16 8:59


for (I = 0; I < N; I++)
  for (J = 0; J < M; J++)
    update(Xs[I][J]);

or

for (I = 0; I < N; I++)
  for (J = 0; J < M; J++)
    update(Xs[J][I]);

???

Name: Anonymous 2012-01-16 14:10

>>111'
>hurr durr


[code]
#include <stdio.h>
#include <setjmp.h>

jmp_buf p;

void sighdlr() {
    longjmp(p, 1);
}

int main() {
    int a = 3, b = 0, c;
    signal(SIGFPE, sighdlr);
    if (!setjmp(p)) {
        c = a / b;
    } else {
        puts("Can't divide by zero");
    }
    return 0;
}

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