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D.3.1.22 permrow

Procedure from library matrix.lib (see matrix_lib).

Usage:
permrow(A,r1,r2); A matrix, r1,r2 positive integers

Return:
matrix, A being modified by permuting rows r1 and r2

Example:
 
LIB "matrix.lib";
ring r=32003,(x,y,z),lp;
matrix A[3][3]=1,2,3,x,y,z,7,8,9;
print(A);
==> 1,2,3,
==> x,y,z,
==> 7,8,9 
print(permrow(A,2,1));
==> x,y,z,
==> 1,2,3,
==> 7,8,9

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