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--- sep:software:ratfor [2008/07/22 19:13]
altheyab
+++ sep:software:ratfor [2015/05/27 02:06]
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-====== RATFOR ======
-==== Downloading ====
-  * {{:sep:software:ratfor77.tar.gz|Ratfor (17KB tar.gz)}} is freely available on our ftp site. (You may have to press the shift key to download the file to your system rather than viewing the file in your browser).
-==== Description ====
-Ratfor is preprocessor for FORTRAN code that allows us to use C-like flow expressions. Jon Claerbout believes that Ratfor is the best available expository language for mathematical algorithms. Ratfor was invented by Brian Kernigham who also co-wrote the first C book. You will not really need precise definitions of Ratfor to use it. Statements on a line may be separated by a ";". Statements may be grouped together with braces {}. Do loops do not require statement numbers because {} defines the range, etc. The Fortran relational operators ".gt.,.ge,.ne.," etc. may be written ">,<=,!=,"etc. Unfortunately, the Ratfor switch statement conflicts with "implicit undefined" declaration, consequently we never use it. Ratfor also frees you from FORTRANs strict indentation rules. Anything from a # to the end of the line is a comment. Ratfor offers quite a few more features more and we strongly recommend it to any FORTRAN programmer.
-==== Installation ====
-  * Download the file.
-  * Unshar the file with **unshar ratfor.shar.2**.
-  * Compile "rat4.o, getopt.o, lookup.o".
-  * Link "rat4.o" (main routine), "getopt.o, lookup.o"(subroutines) and install the executable as "ratfor77"
-==== Acknowledgements ====
-  * Kernighan and Plauger wrote and published the original Ratfor preprocessor in 1976 while working at the Bell Telephone Laboratories.
-  * Oz implemented a C version of the Ratfor preprocessor and made it freely available on the internet.
-==== Bibliography ====
-  * Kernighan, B. and Plauger, P., "Software Tools," Addison-Wesley, 1976.
-  * [[http://www.mit.edu:8001/afs/athena.mit.edu/astaff/project/docsourc/doc/unix.manual.progsupp2/08.ratfor/ratfor.PS|Original bell-labs ratfor (77)documentation]]
-\\
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