From 49d81bc0464417baa5c5655493e21047ff300c6e Mon Sep 17 00:00:00 2001
From: "Brenda S. Baker" <bsb@research.uucp>
Date: Fri, 19 Jan 1979 14:52:30 -0500
Subject: [PATCH] Research V7 development Work on file usr/man/man1/struct.1

Synthesized-from: v7
---
 usr/man/man1/struct.1 | 100 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 usr/man/man1/struct.1

diff --git a/usr/man/man1/struct.1 b/usr/man/man1/struct.1
new file mode 100644
index 0000000000..aaa0c8ba39
--- /dev/null
+++ b/usr/man/man1/struct.1
@@ -0,0 +1,100 @@
+.TH STRUCT 1 
+.SH NAME
+struct \- structure Fortran programs
+.SH SYNOPSIS
+.B struct
+[ option ] ...
+file
+.SH DESCRIPTION
+.LP
+.I Struct
+translates the Fortran program specified by
+.I file
+(standard input default)
+into a Ratfor program.
+Wherever possible, Ratfor control constructs
+replace the original Fortran.
+Statement numbers appear only where still necessary.
+Cosmetic changes are made, including changing Hollerith strings
+into quoted strings
+and relational operators into symbols (.e.g. `.GT.' into `>').
+The output is appropriately indented.
+.PP
+The following options may occur in any order.
+.TP
+.B  \-s
+Input is accepted in standard format, i.e.
+comments are specified by a c, C, or * in column 1, and continuation lines
+are specified by a nonzero, nonblank character in column 6.
+Normally, a statement whose first nonblank character
+is not alphanumeric is treated as a continuation.
+.TP
+.B  \-i
+Do not turn computed goto statements into
+switches.
+(Ratfor does not turn switches back
+into computed goto statements.)
+.TP
+.B  \-a
+Turn sequences of else ifs into a
+non-Ratfor switch of the form
+.IP
+.nf
+.ta 5 7
+switch {
+		case pred1: code
+		case pred2: code
+		case pred3: code
+		default: code
+	}
+.fi
+.DT
+.IP
+The case predicates are tested in order;
+the code appropriate to only one case is executed.
+This generalized form of switch statement does not
+occur in Ratfor.
+.TP
+.B  \-b
+Generate goto's instead of multilevel break statements.
+.TP
+.B  \-n
+Generate goto's instead of multilevel next statements.
+.TP
+.TP
+.BI \-e n
+If 
+.I n
+is 0 (default),
+place code within a loop only if it can
+lead to an iteration of the loop.
+If
+.I n
+is nonzero,
+admit code segments with fewer than
+.I n
+statements to a loop
+if otherwise the loop would have exits to several places including the segment,
+and the segment can be reached only from the loop.
+.SH FILES
+/tmp/struct*
+.br
+/usr/lib/struct/*
+.SH SEE ALSO
+f77(1)
+.SH BUGS
+Struct knows Fortran 66 syntax, but not full Fortran 77
+(alternate returns, IF...THEN...ELSE, etc.)
+.br
+If an input Fortran program contains identifiers which
+are reserved words in Ratfor, the structured
+version of the program
+will not be a valid Ratfor program.
+.br
+Extended range DO's generate cryptic errors.
+.br
+Columns 73-80 are not special even when
+.B \-s
+is in effect.
+.br
+Will not generate Ratfor FOR statements.
-- 
2.20.1