Elementary operations

Elementary row operations are used in Gaussian elimination to reduce a matrix to row echelon form... Wikipedia: Elementary matrix

Swaps two lines:

• swapR_mR();

Multiplies the row r by a scalar:

• mulR_mR();

Multiplies r1 by s add sr1 at r2:

• addR_mR();

Swaps two columns:

• swapC_mR();

Multiplies the column c by a scalar:

• mulC_mR();

Multiplies c1 by s add sc1 at c2:

• addC_mR();

Select the best pivot:

• pivotbest_mR();

Puts zero under the pivot:

• zero_under_pivot_mR();

Swaps two columns with the index:

• swapC_withR0_mR();

Swaps two indexes without touching the columns:

• swapcoefR0_mR();