<?php
error_reporting(E_ALL ^ E_NOTICE);
include("matrix.php");
$Mat=new Matrix();
$cmd=stripslashes(urldecode($_POST['cmd']));
$cmd=str_replace("'",'"',$cmd);
$cmd=str_replace("mat.",'$Mat->',$cmd);
$cmd=str_replace("m.",'$Mat->',$cmd);
$cmd=str_replace("help",'echo $help',$cmd);
$cmd=str_replace("autor",'echo $author',$cmd);
$cmd=str_replace("print",'echo',$cmd);
$author='
>> Created by Ricardo Gamba, 2008
';
$help='
Commands
-------------------------
mat.create(): Matrix creation function
Args: matrix [string] Formato: \'[1 2 3;4 5 6]\'
mat.sum(a,b): Matrix sum function
Args: matrix a, matriz o numero b
mat.subs(a,b): Matriz substraction function
Args: matrix a, matriz o numero b
mat.mult(a,b): Matrix multiplication function
Args: matrix a, matriz b
mat.dmult(a,b): Direct multiplication (NOTE: Is NOT algebraic matrix multiplication)
Args: matrix a, matriz o numero b
mat.det(a): Calculates the determinant of a matrix
Args: matrix a
mat.solve(a): Solve the matrix using the Gauss Jordan reduction algorythm
Args: augmented matrix a
mat.decimals(num): Establish decimal precision
mat.plot(a,texto): Print the matrix on a readable way
Args: a matrix, text = title text (caption)
mat.I(num): Create an identity matrix
Args: n x m array or integer
mat.add(a,b): Add the b matrix to the a matrix (matrix glue)
Args: a, matrix to be augmented. b : matrix to be appended
Note: the matrix are just joined together, not operated
mat.trans(a): Obtain the matrix transpose
Args: matrix a
mat.adj(a): Calculate the adjoint of the matrix
Args: matrix a
mat.inv(a): Calculate the matrix inverse
Args: matrix a
';
eval($cmd);
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