usr/man/cat1/efl.0



EFL(1)              UNIX Programmer's Manual               EFL(1)


N\bNA\bAM\bME\bE
     efl - Extended Fortran Language

S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS
     e\bef\bfl\bl [ option ... ] [ filename ... ]

D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
     _\bE_\bf_\bl compiles a program written in the EFL language into
     clean Fortran.  _\bE_\bf_\bl provides the same control flow con-
     structs as does _\br_\ba_\bt_\bf_\bo_\br(1), which are essentially identical
     to those in C:

     statement grouping with braces;
          decision-making with if, if-else, and switch-case;
          while, for, Fortran do, repeat, and repeat...until
          loops; multi-level break and next.  In addition, EFL
          has C-like data structures, and more uniform and con-
          venient input/output syntax, generic functions.  EFL
          also provides some syntactic sugar to make programs
          easier to read and write:

     free form input:
          multiple statements/line; automatic continuation state-
          ment label names (not just numbers),

     comments:
          # this is a comment

     translation of relationals:
          >, >=, etc., become .GT., .GE., etc.

     return (expression)
          returns expression to caller from function

     define:
          define name replacement

     include:
          include filename

     The Efl command option -\b-w\bw suppresses warning messages.  The
     option -\b-C\bC causes comments to be copied through to the For-
     tran output (default); -\b-#\b# prevents comments from being
     copied through.  If a command argument contains an embedded
     equal sign, that argument is treated as if it had appeared
     in an o\bop\bpt\bti\bio\bon\bn statement at the beginning of the program.  _\bE_\bf_\bl
     is best used with _\bf_\b7_\b7(1).

S\bSE\bEE\bE A\bAL\bLS\bSO\bO
     f77(1), ratfor(1).
     S. I. Feldman, _\bT_\bh_\be _\bP_\br_\bo_\bg_\br_\ba_\bm_\bm_\bi_\bn_\bg _\bL_\ba_\bn_\bg_\bu_\ba_\bg_\be _\bE_\bF_\bL, Bell Labs Com-
     puting Science Technical Report #78.


Printed 7/9/88           April 29, 1985                         1