Convert the code below into corresponding ARM CORTEX-M3 instructions

int runningSum(double * input) {
    int i = 1;
    double sum = input[0];
    double max = sum;
    

    while (input[i] != -1) {
        sum += input[i];
        i++;
        max = Max(sum, max);
    }

return sum;
}

int Max(int first, int sec) {
    if (first > sec)
        return first;
    else
        return sec;
}