411 REFERENCE · Wikibooks
Linear Algebra and the C Language/a04z
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Determinant: 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();