Reduced row echelon form: Difference between revisions

=={{header|Actionscript}}==

_m being of type Vector.<Vector.<Number>> the following function is a method of Matrix class. Therefore return this statements are returning the Matrix object itself.

<lang Actionscript>public function RREF():Matrix {

var lead:uint, i:uint, j:uint, r:uint = 0;

for(r = 0; r < rows; r++) {

if(columns <= lead)

break;

i = r;

while(_m[i][lead] == 0) {

i++;

if(rows == i) {

i = r;

lead++;

if(columns == lead)

return this;

}

}

rowSwitch(i, r);

var val:Number = _m[r][lead];

for(j = 0; j < columns; j++)

_m[r][j] /= val;

for(i = 0; i < rows; i++) {

if(i == r)

continue;

val = _m[i][lead];

for(j = 0; j < columns; j++)

_m[i][j] -= val * _m[r][j];

}

lead++;

}

return this;

}</lang>