Function not declared in this scope?

So here's my code. It's telling me that partition isn't declared when I call it in kSmall... Any ideas?

int kSmall(int A[], int k, int low, int high){
    int pivot = A[(low+high)/2];
    int idx = partition(A, pivot, low, high);
    if(idx-low+1>k)
        kSmall(A,k,low,idx-1);
    else if(idx-low+1<k)
        kSmall(A,k,idx+1,high);
    else
        return A[idx];
}

int partition(int A[], int p, int low, int high){
    int temp;
    int left = low;
    int right = high;
    while (left < right){
        while (A[left]<p)
            left++;
        while (A[right]>p)
            right--;
        if (left<right){
            temp = A[left];
            A[left] = A[right];
            A[right] = temp;
            }
    }
    return left;
}

The exact error is: main.cpp:36:43: error: ‘partFunc’ was not declared in this scope