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D.8.7.6 gaussColWithoutPerm

Procedure from library recover.lib (see recover_lib).

Usage:
gaussColWithoutPerm(M); M a matrix of constant polynomials

Return:
matrix: basic Gaussian column reduction of M, just without permuting the columns

Example:
 
LIB "recover.lib";
ring r=0,x,dp;
matrix M[3][4]=0,1,0,2,1,2,3,4,1,0,5,0;
print(M);
==> 0,1,0,2,
==> 1,2,3,4,
==> 1,0,5,0 
print(gaussColWithoutPerm(M));
==> 0,1,0,0,
==> 1,2,0,0,
==> 1,0,2,0