Documentation for the source code program NRIDENT.C

(Note: This is an UNSUPPORTED product, provided for your convenience only.)

The program "NRIDENT" calculates 3-character checksums of individual
Numerical Recipes source code files.  Unlike standard checksums these
are independent of (at least) some cosmetic changes in the source code
files that don't affect the code itself (e.g., some changes in
whitespace, different end-of-line conventions, etc.)

We use NRIDENT as a part of version control.  We urge users who report
bugs in Numerical Recipes routines to also report the NRIDENT values
of the individual routines used.  That way we can be sure that
reported bugs are in fact not due to use of obsolete versions or
munged files.

The file nrident.c ought to compile successfully, with at most a
little tweaking, on UNIX and MS-DOS machines.  Sorry, we can't provide
any customer support on this!