2003-01-02  Morten Welinder  <terra@diku.dk>

	* src/regression.c (matrix_invert): New function.
	(matrix_determinant): New function.
	(LUPDecomp): Add an argument in which to return determinant.
	(rescale): Add an argument in which to return determinant scaling.

	* src/mathfunc.c (mdeterm, minverse): Delete.

2003-01-02  Morten Welinder  <terra@diku.dk>

	* functions.c (gnumeric_minverse): Use new matrix_invert.
	(gnumeric_mdeterm): Use new matrix_determinant.