changes

把fortran语言编的程序转为c语言编的程序, 运行环境linux

  Bug fixes: under -A and -C++, incorrect C was generated for
subroutines having multiple entries but no arguments.
  Under -A -P, subroutines of no arguments were given prototype
calling sequence () rather than (void).
  Character-valued functions elicited erroneous warning messages
about inconsistent calling sequences when referenced by another
procedure in the same file.
  f2c.1t: omit first appearance of libF77.a in FILES section;
load order of libraries is -lF77 -lI77, not vice versa (bug
introduced in yesterday's edits); define .F macro for those whose
-man lacks it.  (For a while after yesterday's fixes were posted,
f2c.1t was out of date.  Sorry!)

23 Jan. 9:53:24 EST 1990:
  Character substring expressions involving function calls having
character arguments (including the intrinsic len function) yielded
incorrect C.
  Procedures defined after invocation (in the same file) with
conflicting argument types also got an erroneous message about
the wrong number of arguments.

24 Jan. 11:44:00 EST 1990:
  Bug fixes: -p omitted #undefs; COMMON block names containing
underscores had their C names incorrectly computed; a COMMON block
having the name of a previously defined procedure wreaked havoc;
if all arguments were .P files, f2c tried reading the second as a
Fortran file.
  New feature: -P emits comments showing COMMON block lengths, so one
can get warnings of incompatible COMMON block lengths by having f2c
read .P (or .p) files.  Now by running f2c twice, first with -P -!c
(or -P!c),  then with *.P among the arguments, you can be warned of
inconsistent COMMON usage, and COMMON blocks having inconsistent
lengths will be given the maximum length.  (The latter always did
happen within each input file; now -P lets you extend this behavior
across files.)

26 Jan. 16:44:00 EST 1990:
  Option -it made less aggressive: untyped external procedures that
are invoked are now typed by the rules of Fortran, rather than by
previous use of procedures to which they are passed as arguments
before being invoked.
  Option -P now includes information about references, i.e., called
procedures, in the prototype files (in the form of special comments).
This allows iterative invocations of f2c to infer more about untyped
external names, particularly when multiple Fortran files are involved.
  As usual, there are some obscure bug fixes:
1.  Repair of erroneous warning messages about inconsistent number of
arguments that arose when a character dummy parameter was discovered
to be a function or when multiple entry points involved character
variables appearing in a previous entry point.
2.  Repair of memory fault after error msg about "adjustable character
function".
3.  Under -U, allow MAIN_ as a subroutine name (in the same file as a
main program).
4.  Change for consistency: a known function invoked as a subroutine,
then as a function elicits a warning rather than an error.

26 Jan. 22:32:00 EST 1990:
  Fixed two bugs that resulted in incorrect C for substrings, within
the body of a character-valued function, of the function's name, when
those substrings were arguments to another function (even implicitly,
as in character-string assignment).

28 Jan. 18:32:00 EST 1990:
  libf77, libi77: checksum files added; "make check" looks for
transmission errors.  NAMELIST read modified to allow $ rather than &
to precede a namelist name, to allow $ rather than / to terminate
input where the name of another variable would otherwise be expected,
and to regard all nonprinting ASCII characters <= ' ' as spaces.

29 Jan. 02:11:00 EST 1990:
  "fc from f2c" added.
  -it option made the default; -!it turns it off.  Type information is
now updated in a previously missed case.
  -P option tweaked again; message about when rerunning f2c may change
prototypes or declarations made more accurate.
  New option -Ps implies -P and returns exit status 4 if rerunning
f2c -P with prototype inputs might change prototypes or declarations.
Now you can execute a crude script like

	cat *.f >zap.F
	rm -f zap.P
	while :; do
		f2c -Ps -!c zap.[FP]
		case $? in 4) ;; *) break;; esac
		done

to get a file zap.P of the best prototypes f2c can determine for *.f .

Jan. 29 07:30:21 EST 1990:
  Forgot to check for error status when setting return code 4 under -Ps;
error status (1, 2, 3, or, for caught signal, 126) now takes precedence.

Jan 29 14:17:00 EST 1990:
  Incorrect handling of
	open(n,'filename')
repaired -- now treated as
	open(n,file='filename')
(and, under -ext, given an error message).
  New optional source file memset.c for people whose systems don't
provide memset, memcmp, and memcpy; #include <string.h> in mem.c
changed to #include "string.h" so BSD people can create a local
string.h that simply says #include <strings.h> .

Jan 30 10:34:00 EST 1990:
  Fix erroneous warning at end of definition of a procedure with
character arguments when the procedure had previously been called with
a numeric argument instead of a character argument.  (There were two
warnings, the second one incorrectly complaining of a wrong number of
arguments.)

Jan 30 16:29:41 EST 1990:
  Fix case where -P and -Ps erroneously reported another iteration
necessary.  (Only harm is the extra iteration.)

Feb 3 01:40:00 EST 1990:
  Supply semicolon occasionally omitted under -c .
  Try to force correct alignment when numeric variables are initialized
with character data (a non-standard and non-portable practice).  You
must use the -W option if your code has such data statements and is
meant to run on a machine with other than 4 characters/word; e.g., for
code meant to run on a Cray, you would specify -W8 .
  Allow parentheses around expressions in output lists (in write and
print statements).
  Rename source files so their names are <= 12 characters long
(so there's room to append .Z and still have <= 14 characters);
renamed files:  formatdata.c niceprintf.c niceprintf.h safstrncpy.c .
  f2c material made available by anonymous ftp from research.att.com
(look in dist/f2c ).

Feb 3 03:49:00 EST 1990:
  Repair memory fault that arose from use (in an assignment or
call) of a non-argument variable declared CHARACTER*(*).

Feb 9 01:35:43 EST 1990:
  Fix erroneous error msg about bad types in
	subroutine foo(a,adim)
	dimension a(adim)
	integer adim
  Fix improper passing of character args (and possible memory fault)
in the expression part of a computed goto.
  Fix botched calling sequences in array references involving
functions having character args.
  Fix memory fault caused by invocation of character-valued functions
of no arguments.
  Fix botched calling sequence of a character*1-valued function
assigned to a character*1 variable.
  Fix bug in error msg for inconsistent number of args in prototypes.
  Allow generation of C output despite inconsistencies in prototypes,
but give exit code 8.
  Simplify include logic (by removing some bogus logic); never
prepend "/usr/include/" to file names.
  Minor cleanups (that should produce no visible change in f2c's
behavior) in intr.c parse.h main.c defs.h formatdata.c p1output.c .

Feb 10 00:19:38 EST 1990:
  Insert (integer) casts when floating-point expressions are used
as subscripts.
  Make SAVE stmt (with no variable list) override -a .
  Minor cleanups: change field to Field in struct Addrblock (for the
benefit of buggy C compilers); omit system("/bin/cp ...") in misc.c .

Feb 13 00:39:00 EST 1990:
  Error msg fix in gram.dcl: change "cannot make %s parameter"
to "cannot make into parameter".

Feb 14 14:02:00 EST 1990:
  Various cleanups (invisible on systems with 4-byte ints), thanks
to Dave Regan: vaxx.c eliminated; %d changed to %ld various places;
external names adjusted for the benefit of stupid systems (that ignore
case and recognize only 6 significant characters in external names);
buffer shortened in xsum.c (e.g. for MS-DOS); fopen modes distinguish
text and binary files; several unused functions eliminated; missing
arg supplied to an unlikely fatalstr invocation.

Thu Feb 15 19:15:53 EST 1990:
  More cleanups (invisible on systems with 4 byte ints); casts inserted
so most complaints from cyntax(1) and lint(1) go away; a few (int)
versus (long) casts corrected.

Fri Feb 16 19:55:00 EST 1990:
  Recognize and translate unnamed Fortran 8x do while statements.
  Fix bug that occasionally caused improper breaking of character
strings.
  New error message for attempts to provide DATA in a type-declaration
statement.

Sat Feb 17 11:43:00 EST 1990:
  Fix infinite loop clf -> Fatal -> done -> clf after I/O error.
  Change "if (addrp->vclass = CLPROC)" to "if (addrp->vclass == CLPROC)"
in p1_addr (in p1output.c); this was probably harmless.
  Move a misplaced } in lex.c (which slowed initkey()).
  Thanks to Gary Word for pointing these things out.

Sun Feb 18 18:07:00 EST 1990:
  Detect overlapping initializations of arrays and scalar variables
in previously missed cases.
  Treat logical*2 as logical (after issuing a warning).
  Don't pass string literals to p1_comment().
  Correct a cast (introduced 16 Feb.) in gram.expr; this matters e.g.
on a Cray.
  Attempt to isolate UNIX-specific things in sysdep.c (a new source
file).  Unless sysdep.c is compiled with SYSTEM_SORT defined, the
intermediate files created for DATA statements are now sorted in-core
without invoking system().

Tue Feb 20 16:10:35 EST 1990:
  Move definition of binread and binwrite from init.c to sysdep.c .
  Recognize Fortran 8x tokens < <= == >= > <> as synonyms for
.LT. .LE. .EQ. .GE. .GT. .NE.
  Minor cleanup in putpcc.c:  fully remove simoffset().
  More discussion of system dependencies added to libI77/README.

Tue Feb 20 21:44:07 EST 1990:
  Minor cleanups for the benefit of EBCDIC machines -- try to remove
the assumption that 'a' through 'z' are contiguous.  (Thanks again to
Gary Word.)  Also, change log2 to log_2 (shouldn't be necessary).

Wed Feb 21 06:24:56 EST 1990:
  Fix botch in init.c introduced in previous change; only matters
to non-ASCII machines.

Thu Feb 22 17:29:12 EST 1990:
  Allow several entry points to mention the same array.  Protect
parameter adjustments with if's (for the case that an array is not
an argument to all entrypoints).
  Under -u, allow
	subroutine foo(x,n)
	real x(n)
	integer n
  Compute intermediate variables used to evaluate dimension expressions
at the right time.  Example previously mistranslated:
	subroutine foo(x,k,m,n)
	real x(min(k,m,n))
	...
	write(*,*) x
  Detect duplicate arguments.  (The error msg points to the first
executable stmt -- not wonderful, but not worth fixing.)
  Minor cleanup of min/max computation (sometimes slightly simpler).

Sun Feb 25 09:39:01 EST 1990:
  Minor tweak to multiple entry points: protect parameter adjustments
with if's only for (array) args that do not appear in all entry points.
  Minor tweaks to format.c and io.c (invisible unless your compiler
complained at the duplicate #defines of IOSUNIT and IOSFMT or at
comparisons of p1gets(...) with NULL).

Sun Feb 25 18:40:10 EST 1990:
  Fix bug introduced Feb. 22: if a subprogram contained DATA and the
first executable statement was labeled, then the label got lost.
(Just change INEXEC to INDATA in p1output.c; it occurs just once.)

Mon Feb 26 17:45:10 EST 1990:
  Fix bug in handling of " and ' in comments.

Wed Mar 28 01:43:06 EST 1990:
libI77:
 1. Repair nasty I/O bug: opening two files and closing the first
(after possibly reading or writing it), then writing the second caused
the last buffer of the second to be lost.
 2. Formatted reads of logical values treated all letters other than
t or T as f (false).
 libI77 files changed: err.c rdfmt.c Version.c
 (Request "libi77 from f2c" -- you can't get these files individually.)

f2c itself:
  Repair nasty bug in translation of
	ELSE IF (condition involving complicated abs, min, or max)
-- auxiliary statements were emitted at the wrong place.
  Supply semicolon previously omitted from the translation of a label
(of a CONTINUE) immediately preceding an ELSE IF or an ELSE.  This
bug made f2c produce invalid C.
  Correct a memory fault that occurred (on some machines) when the
error message "adjustable dimension on non-argument" should be given.
  Minor tweaks to remove some harmless warnings by overly chatty C
compilers.
  Argument arays having constant dimensions but a variable lower bound
(e.g., x(n+1:n+3)) had a * omitted from scalar arguments involved in
the array offset computation.

Wed Mar 28 18:47:59 EST 1990:
libf77: add exit(0) to end of main [return(0) encounters a Cray bug]

Sun Apr  1 16:20:58 EDT 1990:
  Avoid dereferencing null when processing equivalences after an error.

Fri Apr  6 08:29:49 EDT 1990:
  Calls involving alternate return specifiers omitted processing
needed for things like min, max, abs, and // (concatenation).
  INTEGER*2 PARAMETERs were treated as INTEGER*4.
  Convert some O(n^2) parsing to O(n).

Tue Apr 10 20:07:02 EDT 1990:
  When inconsistent calling sequences involve differing numbers of
arguments, report the first differing argument rather than the numbers
of arguments.
  Fix bug under -a: formatted I/O in which either the unit or the
format was a local character variable sometimes resulted in invalid C
(a static struct initialized with an automatic component).
  Improve error message for invalid flag after elided -.
  Complain when literal table overflows, rather than infinitely
looping.  (The complaint mentions the new and otherwise undocumented
-NL option for specifying a larger literal table.)
  New option -h for forcing strings to word (or, with -hd, double-word)
boundaries where possible.
  Repair a bug that could cause improper splitting of strings.
  Fix bug (cast of c to doublereal) in
	subroutine foo(c,r)
	double complex c
	double precision r
	c = cmplx(r,real(c))
	end
  New include file "sysdep.h" has some things from defs.h (and
elsewhere) that one may need to modify on some systems.
  Some large arrays that were previously statically allocated are now
dynamically allocated when f2c starts running.
  f2c/src files changed:
	README cds.c defs.h f2c.1 f2c.1t format.c formatdata.c init.c
	io.c lex.c main.c makefile mem.c misc.c names.c niceprintf.c
	output.c parse_args.c pread.c put.c putpcc.c sysdep.h
	version.c xsum0.out

Wed Apr 11 18:27:12 EDT 1990:
  Fix bug in argument consistency checking of character, complex, and
double complex valued functions.  If the same source file contained a
definition of such a function with arguments not explicitly typed,
then subsequent references to the function might get erroneous
warnings of inconsistent calling sequences.