AFNI program: float_scan
Output of -help
Usage: float_scan [options] input_filename
Scans the input file of IEEE floating point numbers for
illegal values: infinities and not-a-number (NaN) values.
-fix = Writes a copy of the input file to stdout (which
should be redirected using '>'), replacing
illegal values with 0. If this option is not
used, the program just prints out a report.
-v = Verbose mode: print out index of each illegal value.
-skip n = Skip the first n floating point locations
(i.e., the first 4*n bytes) in the file
N.B.: This program does NOT work on compressed files, nor does it
work on byte-swapped files (e.g., files transferred between
Sun/SGI/HP and Intel platforms), nor does it work on images
stored in the 'flim' format!
The program 'exit status' is 1 if any illegal values were
found in the input file. If no errors were found, then
the exit status is 0. You can check the exit status by
using the shell variable $status. A C-shell example:
if ( $status == 1 ) then
float_scan -fix fff > Elvis.Aaron.Presley
rm -f fff
mv Elvis.Aaron.Presley fff
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Mon Mar 30 23:57:17 EDT 2020