User`s guide

D Utility Library

D-14

Example. This example uses data conversion flags to reshape the output from a

method compiled from a MATLAB function that produces an output vector of

unknown length.

function p = myprimes(n)

if length(n)~=1, error('N must be a scalar'); end

if n < 2, p = zeros(1,0); return, end

p = 1:2:n;

q = length(p);

p(1) = 2;

for k = 3:2:sqrt(n)

if p((k+1)/2)

p(((k*k+1)/2):k:q) = 0;

end

p = (p(p>0));

This function produces a row vector of all the prime numbers between 0 and n.

Assume that this function is included in a class named

myclass that is included

in a component named

mycomponent with a version of 1.0. The subroutine takes

an Excel range and a

Double as inputs, and places the generated prime

numbers into the supplied range. The MATLAB function produces a row

vector, although you want the output in column format. It also produces an

unknown number of outputs, and you do not want to truncate any output. To

handle these issues, set the

TransposeOutput flag and the AutoResizeOutput

flag to

True. In previous examples, the Visual Basic CreateObject function

creates the necessary classes. This example uses an explicit type declaration

for the

aClass variable. As with previous examples, this function assumes that

MWInitApplication has been previously called.