while

March 6th, 2008 Posted in Controls

Repeat statements an indefinite number of times.
The general form of a while statement is:

while expression
statements

The statements are executed while the real part of the expression
has all non-zero elements. The expression is usually the result of
expr rop expr where rop is ==, <, >, <=, >=, or ~=.

The statement can be used to terminate the loop prematurely.

example (assuming A already defined):

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E = 0*A; F = E + eye(size(E)); N = 1;
while norm(E+F-E,1) &gt; 0,
E = E + F;
F = A*F/N;
N = N + 1;
end

See also for, , , break, end.

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