while
expression
statements
end
while
repeats statements
an indefinite number of times. The statements
are executed while the expression
has all nonzero elements. The expression
is usually of the form
expression rop expression
where rop
is ==, <, >, <=, >=, or ~=.
The scope of a while
statement is always terminated with a matching end
.
eps
is a tolerance used to determine such things as near singularity and rank. Its initial value is the machine epsilon, the distance from 1.0 to the next largest floating-point number on your machine. Its calculation demonstrates while
loops:
eps = 1;
while (1+eps) > 1
eps = eps/2;
end
eps = eps*2
all
,any
,break
,end
,for
,if
,return
(c) Copyright 1994 by The MathWorks, Inc.