EFL(1)                                                                  EFL(1)



NAME
       efl - Extended Fortran Language

SYNOPSIS
       efl [ option ... ] [ filename ... ]

DESCRIPTION
       _E_f_l  compiles a program written in the EFL language into clean Fortran.
       _E_f_l provides the same control flow constructs as does _r_a_t_f_o_r(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 convenient 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 statement 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 -w suppresses warning messages.  The option -C
       causes comments to be copied through to the Fortran  output  (default);
       -#  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 option statement at the beginning of the program.  _E_f_l
       is best used with _f_7_7(1).

SEE ALSO
       f77(1), ratfor(1).
       S. I. Feldman, _T_h_e _P_r_o_g_r_a_m_m_i_n_g _L_a_n_g_u_a_g_e _E_F_L, Bell Labs  Computing  Sci‐
       ence Technical Report #78.



7th Edition                     April 29, 1985                          EFL(1)