ddot-normal

#include <stdio.h>
#include <cblas.h>

double ddot(double* m, double* n) {
    return cblas_ddot(10, m, 1, n, 1);
}

int main() {
    double m[3] = {1, 2, 3};
    double n[3] = {4, 5, 6};
    printf("ddot = %f\n", ddot(m, n));
}