\"      $NetBSD: fsplit.1,v 1.9 2003/08/07 11:13:50 agc Exp $
\"
\" Copyright (c) 1983, 1990, 1993
\"      The Regents of the University of California.  All rights reserved.
\"
\" This code is derived from software contributed to Berkeley by
\" Asa Romberger and Jerry Berkman.
\" Redistribution and use in source and binary forms, with or without
\" modification, are permitted provided that the following conditions
\" are met:
\" 1. Redistributions of source code must retain the above copyright
\"    notice, this list of conditions and the following disclaimer.
\" 2. Redistributions in binary form must reproduce the above copyright
\"    notice, this list of conditions and the following disclaimer in the
\"    documentation and/or other materials provided with the distribution.
\" 3. Neither the name of the University nor the names of its contributors
\"    may be used to endorse or promote products derived from this software
\"    without specific prior written permission.
\"
\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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\"
\"      from: @(#)fsplit.1      8.1 (Berkeley) 6/6/93
\"
Dd June 6, 1993
Dt FSPLIT 1
Os
Sh NAME
Nm fsplit
Nd split a multi-routine Fortran file into individual files
Sh SYNOPSIS
Nm
Op Fl e Ar efile
\&...
Op Ar file
Sh DESCRIPTION
Nm
takes as input either a file or standard input containing Fortran source code.
It attempts to split the input into separate routine files of the
form
Ar name.f ,
where
Ar name
is the name of the program unit (e.g. function, subroutine, block data or
program).
The name for unnamed block data subprograms has the form
Ar blkdtaNNN.f
where NNN is three digits and a file of this name does not already exist.
For unnamed main programs the name has the form
Ar mainNNN.f .
If there is an error in classifying a program unit, or if
Ar name.f
already exists,
the program unit will be put in a file of the form
Ar zzzNNN.f
where
Ar zzzNNN.f
does not already exist.
Pp
Bl -tag -width Fl
It Fl e Ar efile
Normally each subprogram unit is split into a separate file.
When the
Fl e
option is used, only the specified subprogram units are split into separate
files.
E.g.:
Pp
Dl fsplit -e readit -e doit prog.f
Pp
will split readit and doit into separate files.
El
Sh DIAGNOSTICS
If names specified via the
Fl e
option are not found, a diagnostic is written to
standard error.
Sh HISTORY
The
Nm
command
appeared in
Bx 4.2 .
Sh AUTHORS
Asa Romberger and Jerry Berkman
Sh BUGS
Nm
assumes the subprogram name is on the first noncomment line of the subprogram
unit.
Nonstandard source formats may confuse
Nm .
Pp
It is hard to use
Fl e
for unnamed main programs and block data subprograms since you must
predict the created file name.

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