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Source code versions:

Description	Size	Download Now!
Encoding/decoding WMO FM-95 CREX	578KB	crex_000376.tar.gz 18.11.2010
Encoding/decoding WMO FM-95 CREX	591KB	crex_000372.tar.gz 27.01.2010
Encoding/decoding WMO FM-95 CREX	599KB	crex_000350.tar.gz 29.11.2007
Encoding/decoding WMO FM-95 CREX	580KB	crex_000340.tar.gz 03.09.2007
Encoding/decoding WMO FM-95 CREX	565KB	crex_000320.tar.gz 05.04.2007
Encoding/decoding WMO FM-95 CREX	505KB	crex_000310.tar.gz 14.07.2006
Encoding/decoding WMO FM-95 CREX	415KB	crex_000300.tar.gz 02.05.2006
Encoding/decoding WMO FM-95 CREX	404KB	crex_000270.tar.gz

CREXDC library have been tested for different machine architectures that exist in ECMWF:

Decalpha - Compaq Fortran 90, C++ compilers
Hppa - HP Fortran and C compilers
Linux - The Portland Group compilers pgf90 and pgcc, Gnu project gcc, g77 compilers
Rs6000 - XL Fortran for AIX- C for AIX Compiler, Version 5
Sgimips - MIPSpro F77 compiler- MIPS C compiler
Sun4 - Forte Developer 7 Fortran 95 compiler SunOS/BSD Compatibility Package C compiler

It is possible to use other options for the compilation of source code versions than those which are offered. For example: modifying the configuration files; changing the level of optimisation; etc. The make utility can be used repeatedly. It will only cause the re-compilation of routines which have been modified since the previous make.

You can install CREXDC library on Windows only if you have Cygwin linux-like environment for Windows and Gnu compilers.

Installation is possible on Mac OS 10.1 onward using Gnu compilers.

The number of bits in the representation of real numbers can be chosen between 32bits and 64bits for all compilers apart from the Gnu compilers..

The library is static and its name follows the normal UNIX convention (it starts with lib and ends in .a), so the library can be specified in the compile/link command using the
standard ld convention, for example:

f77 -o program program.f -lcrex

Package contains examples for the CREX encoding/decoding and number of useful tools for conversion from BUFR to CREX format and vise versa.

The following variable can be set to TRUE in order to create CREX message with check digit.

USE_E = TRUE

After succesfully instalation the location of CREX tables could be specified by putting the specification of the environment variables in your startup files(.profile, ...) to ensure you have access to the tables upon future logins.
Thus:

Bourne or Korn shell

CREX_TABLES = "chosen directory"/crextables/
export CREX_TABLES

C-shell

setenv CREX_TABLES "chosen directory"/crextables/

Please note:

All software items above are available in the format "* .tar.gz" ie gzipped and tarred source for use with Unix or Linux based systems.

18.11.2010