Array shuffling in C

gistfile1.c

/* Fisher-Yates shuffle
   Assume rand is already seeded */
   
void shuffle(my_type_t *A, size_t n)
{
    int i, j;
    my_type_t t;
    for (i = n-1; i > 0; i--) {
        j = rand() % (i+1) /* random int, 0 <= j <= i */
        t = A[i];
        A[i] = A[j];
        A[j] = t;
    }
}