You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: bspm_batch_imcalc.m
    path of file: ./repos/bspm/utilities
    
    the code of the file until where you have to start completion: function [] = bspm_batch_imcalc(in, prefix, operation)
% BSPM_BATCH_IMCALC  Simple wrapper for bspm_imcalc
%
%   USAGE: bspm_batch_imcalc(in, prefix, operation)
%       
%       in  =  cell array of images (full path)
%       prefix = prefix for each output image
%       operation = string specifying operation to apply
%          
% CREATED: Bob Spunt, Ph.D. (bobspunt@gmail.com) - 2013.03.20
% CREDIT: Loosely based on functionality of spm_imcalc_ui.m (SPM8)

% ---------------------- Copyright (C) 2014 ----------------------
%	Author: Bob Spunt

    
function [] = bspm_batch_imcalc(in, prefix, operation)
% BSPM_BATCH_IMCALC  Simple wrapper for bspm_imcalc
%
%   USAGE: bspm_batch_imcalc(in, prefix, operation)
%       
%       in  =  cell array of images (full path)
%       prefix = prefix for each output image
%       operation = string specifying operation to apply
%          
% CREATED: Bob Spunt, Ph.D. (bobspunt@gmail.com) - 2013.03.20
% CREDIT: Loosely based on functionality of spm_imcalc_ui.m (SPM8)

% ---------------------- Copyright (C) 2014 ----------------------
%	Author: Bob Spunt
%	Affilitation: Caltech
%	Email: spunt@caltech.edu
%
%	$Revision Date: Aug_20_2014

if nargin<3, mfile_showhelp; return; end