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Annotation of researchv10dc/cmd/f2c/f2c.1t, revision 1.1

1.1     ! root        1: . \" Definitions of F, L and LR for the benefit of systems
        !             2: . \" whose -man lacks them...
        !             3: .de F
        !             4: .nh
        !             5: .if n \%\&\\$1
        !             6: .if t \%\&\f(CW\\$1\fR
        !             7: .hy 14
        !             8: ..
        !             9: .de L
        !            10: .nh
        !            11: .if n \%`\\$1'
        !            12: .if t \%\&\f(CW\\$1\fR
        !            13: .hy 14
        !            14: ..
        !            15: .de LR
        !            16: .nh
        !            17: .if n \%`\\$1'\\$2
        !            18: .if t \%\&\f(CW\\$1\fR\\$2
        !            19: .hy 14
        !            20: ..
        !            21: .TH F2C 1
        !            22: .CT 1 prog_other
        !            23: .SH NAME
        !            24: f\^2c \(mi Convert Fortran 77 to C or C++
        !            25: .SH SYNOPSIS
        !            26: .B f\^2c
        !            27: [
        !            28: .I option ...
        !            29: ]
        !            30: .I file ...
        !            31: .SH DESCRIPTION
        !            32: .I F2c
        !            33: converts Fortran 77 source code in
        !            34: .I files
        !            35: with names ending in
        !            36: .L .f
        !            37: or
        !            38: .L .F
        !            39: to C (or C++) source files in the
        !            40: current directory, with
        !            41: .L .c
        !            42: substituted
        !            43: for the final
        !            44: .L .f
        !            45: or
        !            46: .LR .F .
        !            47: If no Fortran files are named,
        !            48: .I f\^2c
        !            49: reads Fortran from standard input and
        !            50: writes C on standard output.
        !            51: .I File
        !            52: names that end with
        !            53: .L .p
        !            54: or
        !            55: .L .P
        !            56: are taken to be prototype
        !            57: files, as produced by option
        !            58: .LR -P ,
        !            59: and are read first.
        !            60: .PP
        !            61: The following options have the same meaning as in
        !            62: .IR f\^77 (1).
        !            63: .TP
        !            64: .B -C
        !            65: Compile code to check that subscripts are within declared array bounds.
        !            66: .TP
        !            67: .B -I2
        !            68: Render INTEGER and LOGICAL as short,
        !            69: INTEGER\(**4 as long int.  Assume the default \fIlibF77\fR
        !            70: and \fIlibI77\fR:  allow only INTEGER\(**4 (and no LOGICAL)
        !            71: variables in INQUIREs.  Option
        !            72: .L -I4
        !            73: confirms the default rendering of INTEGER as long int.
        !            74: .TP
        !            75: .B -onetrip
        !            76: Compile DO loops that are performed at least once if reached.
        !            77: (Fortran 77 DO loops are not performed at all if the upper limit is smaller than the lower limit.)
        !            78: .TP
        !            79: .B -U
        !            80: Honor the case of variable and external names.  Fortran keywords must be in
        !            81: .I
        !            82: lower
        !            83: case.
        !            84: .TP
        !            85: .B -u
        !            86: Make the default type of a variable `undefined' rather than using the default Fortran rules.
        !            87: .TP
        !            88: .B -w
        !            89: Suppress all warning messages.
        !            90: If the option is
        !            91: .LR -w66 ,
        !            92: only Fortran 66 compatibility warnings are suppressed.
        !            93: .PP
        !            94: The following options are peculiar to
        !            95: .IR f\^2c .
        !            96: .TP
        !            97: .B -A
        !            98: Produce
        !            99: .SM ANSI
        !           100: C.
        !           101: Default is old-style C.
        !           102: .TP
        !           103: .B -a
        !           104: Make local variables automatic rather than static
        !           105: unless they appear in a
        !           106: .SM "DATA, EQUIVALENCE, NAMELIST,"
        !           107: or
        !           108: .SM SAVE
        !           109: statement.
        !           110: .TP
        !           111: .B -C++
        !           112: Output C++ code.
        !           113: .TP
        !           114: .B -c
        !           115: Include original Fortran source as comments.
        !           116: .TP
        !           117: .B -E
        !           118: Declare uninitialized
        !           119: .SM COMMON
        !           120: to be
        !           121: .B Extern
        !           122: (overridably defined in
        !           123: .F f2c.h
        !           124: as
        !           125: .B extern).
        !           126: .TP
        !           127: .B -ec
        !           128: Place uninitialized
        !           129: .SM COMMON
        !           130: blocks in separate files:
        !           131: .B COMMON /ABC/
        !           132: appears in file
        !           133: .BR abc_com.c .
        !           134: Option
        !           135: .LR -e1c
        !           136: bundles the separate files
        !           137: into the output file, with comments that give an unbundling
        !           138: .IR sed (1)
        !           139: script.
        !           140: .TP
        !           141: .B -ext
        !           142: Complain about
        !           143: .IR f\^77 (1)
        !           144: extensions.
        !           145: .TP
        !           146: .B -f
        !           147: Assume free-format input: accept text after column 72 and do not
        !           148: pad fixed-format lines shorter than 72 characters with blanks.
        !           149: .TP
        !           150: .B -72
        !           151: Treat text appearing after column 72 as an error.
        !           152: .TP
        !           153: .B -g
        !           154: Include original Fortran line numbers in \f(CW#line\fR lines.
        !           155: .TP
        !           156: .B -h
        !           157: Emulate Fortran 66's treatment of Hollerith: try to align character strings on
        !           158: word (or, if the option is
        !           159: .LR -hd ,
        !           160: on double-word) boundaries.
        !           161: .TP
        !           162: .B -i2
        !           163: Similar to
        !           164: .BR -I2 ,
        !           165: but assume a modified
        !           166: .I libF77
        !           167: and
        !           168: .I libI77
        !           169: (compiled with
        !           170: .BR -Df\^2c_i2 ),
        !           171: so
        !           172: .SM INTEGER
        !           173: and
        !           174: .SM LOGICAL
        !           175: variables may be assigned by
        !           176: .SM INQUIRE
        !           177: and array lengths are stored in short ints.
        !           178: .TP
        !           179: .B -kr
        !           180: Use temporary values to enforce Fortran expression evaluation
        !           181: where K&R (first edition) parenthesization rules allow rearrangement.
        !           182: If the option is
        !           183: .LR -krd ,
        !           184: use double precision temporaries even for single-precision operands.
        !           185: .TP
        !           186: .B -P
        !           187: Write a
        !           188: .IB file .P
        !           189: of ANSI (or C++) prototypes
        !           190: for definitions in each input
        !           191: .IB file .f
        !           192: or
        !           193: .IB file .F .
        !           194: When reading Fortran from standard input, write prototypes
        !           195: at the beginning of standard output.  Option
        !           196: .B -Ps
        !           197: implies
        !           198: .B -P
        !           199: and gives exit status 4 if rerunning
        !           200: .I f\^2c
        !           201: may change prototypes or declarations.
        !           202: .TP
        !           203: .B -p
        !           204: Supply preprocessor definitions to make common-block members
        !           205: look like local variables.
        !           206: .TP
        !           207: .B -R
        !           208: Do not promote
        !           209: .SM REAL
        !           210: functions and operations to
        !           211: .SM DOUBLE PRECISION.
        !           212: Option
        !           213: .L -!R
        !           214: confirms the default, which imitates
        !           215: .IR f\^77 .
        !           216: .TP
        !           217: .B -r
        !           218: Cast values of REAL functions (including intrinsics) to REAL.
        !           219: .TP
        !           220: .B -r8
        !           221: Promote
        !           222: .SM REAL
        !           223: to
        !           224: .SM DOUBLE PRECISION, COMPLEX
        !           225: to
        !           226: .SM DOUBLE COMPLEX.
        !           227: .TP
        !           228: .B -s
        !           229: Preserve multidimensional subscripts.
        !           230: .TP
        !           231: .BI -T dir
        !           232: Put temporary files in directory
        !           233: .I dir.
        !           234: .TP
        !           235: .B -w8
        !           236: Suppress warnings when
        !           237: .SM COMMON
        !           238: or
        !           239: .SM EQUIVALENCE
        !           240: forces odd-word alignment of doubles.
        !           241: .TP
        !           242: .BI -W n
        !           243: Assume
        !           244: .I n
        !           245: characters/word (default 4)
        !           246: when initializing numeric variables with character data.
        !           247: .TP
        !           248: .B -z
        !           249: Do not implicitly recognize
        !           250: .SM DOUBLE COMPLEX.
        !           251: .TP
        !           252: .B -!bs
        !           253: Do not recognize \fIb\fRack\fIs\fRlash escapes
        !           254: (\e", \e', \e0, \e\e, \eb, \ef, \en, \er, \et, \ev) in character strings.
        !           255: .TP
        !           256: .B -!c
        !           257: Inhibit C output, but produce
        !           258: .B -P
        !           259: output.
        !           260: .TP
        !           261: .B -!I
        !           262: Reject
        !           263: .B include
        !           264: statements.
        !           265: .TP
        !           266: .B -!i8
        !           267: Disallow
        !           268: .SM INTEGER*8.
        !           269: .TP
        !           270: .B -!it
        !           271: Don't infer types of untyped
        !           272: .SM EXTERNAL
        !           273: procedures from use as parameters to previously defined or prototyped
        !           274: procedures.
        !           275: .TP
        !           276: .B -!P
        !           277: Do not attempt to infer
        !           278: .SM ANSI
        !           279: or C++
        !           280: prototypes from usage.
        !           281: .PP
        !           282: The resulting C invokes the support routines of
        !           283: .IR f\^77 ;
        !           284: object code should be loaded by
        !           285: .I f\^77
        !           286: or with
        !           287: .IR ld (1)
        !           288: or
        !           289: .IR cc (1)
        !           290: options
        !           291: .BR "-lF77 -lI77 -lm" .
        !           292: Calling conventions
        !           293: are those of
        !           294: .IR f\&77 :
        !           295: see the reference below.
        !           296: .br
        !           297: .SH FILES
        !           298: .TP
        !           299: .IB file .[fF]
        !           300: input file
        !           301: .TP
        !           302: .B *.c
        !           303: output file
        !           304: .TP
        !           305: .F /usr/include/f2c.h
        !           306: header file
        !           307: .TP
        !           308: .F /usr/lib/libF77.a
        !           309: intrinsic function library
        !           310: .TP
        !           311: .F /usr/lib/libI77.a
        !           312: Fortran I/O library
        !           313: .TP
        !           314: .F /lib/libc.a
        !           315: C library, see section 3
        !           316: .SH "SEE ALSO"
        !           317: S. I. Feldman and
        !           318: P. J. Weinberger,
        !           319: `A Portable Fortran 77 Compiler',
        !           320: \fIUNIX Time Sharing System Programmer's Manual\fR,
        !           321: Tenth Edition, Volume 2, AT&T Bell Laboratories, 1990.
        !           322: .SH DIAGNOSTICS
        !           323: The diagnostics produced by
        !           324: .I f\^2c
        !           325: are intended to be
        !           326: self-explanatory.
        !           327: .SH BUGS
        !           328: Floating-point constant expressions are simplified in
        !           329: the floating-point arithmetic of the machine running
        !           330: .IR f\^2c ,
        !           331: so they are typically accurate to at most 16 or 17 decimal places.
        !           332: .br
        !           333: Untypable
        !           334: .SM EXTERNAL
        !           335: functions are declared
        !           336: .BR int .

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