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freesurfer_fread3

PURPOSE

freesurfer_fread3 - read a 3 byte integer out of a file

SYNOPSIS

function [retval] = freesurfer_fread3(fid)

DESCRIPTION

 freesurfer_fread3 - read a 3 byte integer out of a file
 
 [retval] = freesurfer_fread3(fid)

 see also freesurfer_write3, freesurfer_read_surf, freesurfer_write_surf

CROSS-REFERENCE INFORMATION

This function calls:

This function is called by:

freesurfer_read_curv freesurfer_read_curv - FreeSurfer I/O function to read a curvature file
freesurfer_read_surf freesurfer_read_surf - FreeSurfer I/O function to read a surface file
freesurfer_read_wfile freesurfer_read_wfile - FreeSurfer I/O function to read an overlay (*.w) file

SOURCE CODE

0001 function [retval] = freesurfer_fread3(fid)
0002 
0003 % freesurfer_fread3 - read a 3 byte integer out of a file
0004 %
0005 % [retval] = freesurfer_fread3(fid)
0006 %
0007 % see also freesurfer_write3, freesurfer_read_surf, freesurfer_write_surf
0008 %
0009 
0010 b1 = fread(fid, 1, 'uchar') ;
0011 b2 = fread(fid, 1, 'uchar') ;
0012 b3 = fread(fid, 1, 'uchar') ;
0013 retval = bitshift(b1, 16) + bitshift(b2,8) + b3 ;