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: spm_defs.m
    path of file: ./repos/malini/Codes/deconvolution - model/spm8
    
    the code of the file until where you have to start completion: function out = spm_defs(job)
% Various deformation field
    
function ofnames = apply_def(Def,mat,fnames,odir,intrp)
% Warp an image or series of images according to a deformation field

intrp = [intrp*[1 1 1], 0 0 0];
ofnames = cell(size(fnames,1),1);

for i=1:size(fnames,1),
    V = spm_vol(fnames(i,:));
    M = inv(V.mat);
    [pth,nam,ext,num] = spm_fileparts(deblank(fnames(i,:)));
    if isempty(odir)
        % use same path as source image
        opth = pth;
    else
        % use prespecified path
        opth = odir;
    end