% 
% Usage:   Z =mexCalcXY(X,Y);
%
% Name: mexCalcXY
%
% Description: Compute Z=XY using the BLAS library used by SPAMS.
%
% Inputs: X:  double m x n matrix
%         Y:  double n x p matrix   
%
% Output: Z: double m x p matrix 
%
% Author: Julien Mairal, 2009


