pointer 2d array

im having trouble compiling this,

Code:

#include <stdio.h>
#include <math.h>

double matnorm1(double **A, int m, int n)
{
	double norm=0.0;
	double temp;
	int x;
	int y;
	for (x=0; x<n; x++)
	{
		temp=0.0;
		for (y=0; y<m; y++)
		{
		temp=temp+fabs(A[y][x]);
		}
		if(temp>norm) norm=temp; 
	}
	return(norm);
}

double matnorminf(double **A, int m, int n)
{
	double norm=0.0;
	double temp;
	int x;
	int y;
	for (x=0; x<m; x++)
	{
		temp=0.0;
		for (y=0; y<n; y++)
		{
		temp=temp+fabs(A[x][y]);
		}
		if(temp>norm) norm=temp; 
	}
	return(norm);
}


main()
{
	double A[2][2]={{1.0,2.0},{3.0,4.0}};
	printf("The matnorm1 is %g\n",matnorm1(A,2,2));
	printf("The matnorminf is %g\n",matnorminf(A,2,2));

}

when i do i get the following error message-

hw2-3.c:44: error: cannot convert 'double (*)[2]' to 'double**' for argument '1' to 'double matnorm1(double**, int, int)'
hw2-3.c:45: error: cannot convert 'double (*)[2]' to 'double**' for argument '1' to 'double matnorminf(double**, int, int)'

and i have no idea how to correct this.
any help would be appreciated.

http://www.eskimo.com/~scs/C-faq/q6.18.html

if i change the declarations to

Code:

double matnorm1(double A[][2], int m, int n);

then it works for the 2x2 matrix in main, but i want it to flexible to handle any matrix specified as mxn

http://www.eskimo.com/~scs/C-faq/q6.19.html
http://www.eskimo.com/~scs/C-faq/q6.16.html