[unix-history] / usr / src / old / efl / efl.1

.\"	@(#)efl.1	6.1 (Berkeley) %G%
.\"
.TH EFL 1 ""
.AT 3
.SH NAME
efl \- Extended Fortran Language
.SH SYNOPSIS
.B efl
[ option ... ]
[ filename ... ]
.SH DESCRIPTION
.I Efl
compiles a program written in the EFL language into clean Fortran.
.I Efl
provides the same control flow constructs as does
.IR ratfor (1),
which are essentially identical to those in C:
.TP
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:
.TP
free form input:
multiple statements/line; automatic continuation
statement label names (not just numbers),
.TP
comments:
# this is a comment
.TP
translation of relationals:
>, >=, etc., become .GT., .GE., etc.
.TP
return (expression)
returns expression to caller from function
.TP
define:
define name replacement
.TP
include:
include filename
.PP
.fi
The Efl command option
.B \-w
suppresses warning messages.
The option
.B \-C
causes comments to be copied through to the Fortran output (default);
.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
.B option
statement at the beginning of the program.
.I Efl
is best used with
.IR f77 (1).
.SH "SEE ALSO"
f77(1),
ratfor(1).
.br
S. I. Feldman,
.IR "The Programming Language EFL",
Bell Labs Computing Science Technical Report #78.
Commit	Line	Data
509c8ddd	1	.\" @(#)efl.1 6.1 (Berkeley) %G%
8d5377f7	2	.\"
509c8ddd	3	.TH EFL 1 ""
8d5377f7 KM	4	.AT 3
	5	.SH NAME
	6	efl \- Extended Fortran Language
	7	.SH SYNOPSIS
	8	.B efl
	9	[ option ... ]
	10	[ filename ... ]
	11	.SH DESCRIPTION
	12	.I Efl
	13	compiles a program written in the EFL language into clean Fortran.
	14	.I Efl
01b1aeb5 KM	15	provides the same control flow constructs as does
01b1aeb5 KM	16	.IR ratfor (1),
8d5377f7 KM	17	which are essentially identical to those in C:
	18	.TP
	19	statement grouping with braces;
	20	decision-making with if, if-else, and switch-case;
	21	while,
	22	for,
	23	Fortran do,
	24	repeat,
	25	and repeat...until loops;
	26	multi-level break and next.
	27	In addition, EFL has C-like data structures,
	28	and more uniform and convenient input/output syntax,
	29	generic functions.
	30	EFL also provides
	31	some syntactic sugar to make programs easier to read and write:
	32	.TP
	33	free form input:
	34	multiple statements/line; automatic continuation
	35	statement label names (not just numbers),
	36	.TP
	37	comments:
	38	# this is a comment
	39	.TP
	40	translation of relationals:
	41	>, >=, etc., become .GT., .GE., etc.
	42	.TP
	43	return (expression)
	44	returns expression to caller from function
	45	.TP
	46	define:
	47	define name replacement
	48	.TP
	49	include:
	50	include filename
	51	.PP
	52	.fi
	53	The Efl command option
	54	.B \-w
	55	suppresses warning messages.
	56	The option
	57	.B \-C
	58	causes comments to be copied through to the Fortran output (default);
	59	.B \-#
	60	prevents comments from being copied through.
	61	If a command argument contains an embedded equal sign,
	62	that argument is treated as if it had appeared in an
	63	.B option
	64	statement at the beginning of the program.
	65	.I Efl
	66	is best used with
	67	.IR f77 (1).
	68	.SH "SEE ALSO"
	69	f77(1),
	70	ratfor(1).
	71	.br
	72	S. I. Feldman,
	73	.IR "The Programming Language EFL",
	74	Bell Labs Computing Science Technical Report #78.