Docs For Class MagicSquareExample

Class: MagicSquareExample

Class Details

[line 11]
Example of use of Matrix Class, featuring magic squares.

Class Methods

method magic [line 17]

void magic(
int
$n)

Generate magic square test matrix.

Parameters:

int

n dimension of matrix

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method main [line 100]

void main(
)

Tests LU, QR, SVD and symmetric Eig decompositions.

n = order of magic square. trace = diagonal sum, should be the magic sum, (n^3 + n)/2. max_eig = maximum eigenvalue of (A + A')/2, should equal trace. rank = linear algebraic rank, should equal n if n is odd, be less than n if n is even. cond = L_2 condition number, ratio of singular values. lu_res = test of LU factorization, norm1(L*U-A(p,:))/(n*eps). qr_res = test of QR factorization, norm1(Q*R-A)/(n*eps).

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method microtime_float [line 83]

void microtime_float(
)

Simple function to replicate PHP 5 behaviour

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Documentation generated on Sat, 19 May 2012 14:37:55 +0200 by phpDocumentor 1.4.4

Class: MagicSquareExample

Class Overview

Methods

Class Details

Class Methods

method magic [line 17]

Parameters:

method main [line 100]

method microtime_float [line 83]