What is 'imapplymatrixc' in the function imapplymatrix?

Hi all I was looking through the code for function imapplymatrix and on line line 92 came across the function imapplymatrixc. This is not defined anywhere else, and I am wondering why matlab does not throw an error because of it, does the c on the end have some sort of significance? Very confused.

I am using Image Processing Toolbox for R2012a.

Thanks in advance. Will

 % Compute and return to original orientation.
Z = imapplymatrixc(I, multiplier', constants, outputClass);
Z = reshape(Z, origImageDims(1), origImageDims(2), [ ]);

Answer 1

[Image Analyst]

It's probably a mex file. Most of the source code for toolboxes that I've run across is a wrapper and the "real" work is done by a mex file/DLL that the m-file calls. If you need/want any more info, you'll probably have to contact Mathworks support who will probably have to contact the Image Processing Toolbox development team.