F2C

NAME

SYNOPSIS

DESCRIPTION

The following options have the same meaning as in f77(1).

-C

Compile code to check that subscripts are within declared array bounds.

-I2

Render INTEGER and LOGICAL as short, INTEGER*4 as long int. Assume the default libF77 and libI77: allow only INTEGER*4 (and no LOGICAL) variables in INQUIREs. Option confirms the default rendering of INTEGER as long int.

-onetrip

Compile DO loops that are performed at least once if reached. (Fortran 77 DO loops are not performed at all if the upper limit is smaller than the lower limit.)

-U

Honor the case of variable and external names. Fortran keywords must be in lower case.

-u

Make the default type of a variable `undefined' rather than using the default Fortran rules.

-w

Suppress all warning messages. If the option is `-w66', only Fortran 66 compatibility warnings are suppressed.

The following options are peculiar to f2c.

-A

Produce ANSI C. Default is old-style C.

-a

Make local variables automatic rather than static unless they appear in a DATA, EQUIVALENCE, NAMELIST, or SAVE statement.

-C++

Output C++ code.

-c

Include original Fortran source as comments.

-E

Declare uninitialized COMMON to be Extern (overridably defined in as extern).

-ec

Place uninitialized COMMON blocks in separate files: COMMON /ABC/ appears in file abc_com.c. Option `-e1c' bundles the separate files into the output file, with comments that give an unbundling sed(1) script.

-ext

Complain about f77(1) extensions.

-g

Include original Fortran line numbers as comments.

-h

Try to align character strings on word (or, if the option is `-hd', on double-word) boundaries.

-i2

Similar to -I2, but assume a modified libF77 and libI77 (compiled with -Df2c_i2), so INTEGER and LOGICAL variables may be assigned by INQUIRE.

-kr

Use temporary values to enforce Fortran expression evaluation where K&R (first edition) parenthesization rules allow rearrangement. If the option is `-krd', use double precision temporaries even for single-precision operands.

-P

Write a file.P of ANSI (or C++) prototypes for procedures defined in each input file.f or file.F. When reading Fortran from standard input, write prototypes at the beginning of standard output. Implies -A unless option is present. Option -Ps implies -P , and gives exit status 4 if rerunning f2c may change prototypes or declarations.

-p

Supply preprocessor definitions to make common-block members look like local variables.

-R

Do not promote REAL functions and operations to DOUBLE PRECISION. Option confirms the default, which imitates f77.

-r

Cast values of REAL functions (including intrinsics) to REAL.

-r8

Promote REAL to DOUBLE PRECISION, COMPLEX to DOUBLE COMPLEX.

-Tdir

Put temporary files in directory dir.

-w8

Suppress warnings when COMMON or EQUIVALENCE forces odd-word alignment of doubles.

-Wn

Assume n characters/word (default 4) when initializing numeric variables with character data.

-z

Do not implicitly recognize DOUBLE COMPLEX.

-!bs

Do not recognize backslash escapes (\", \', \0, \\, \b, \f, \n, \r, \t, \v) in character strings.

-!c

Inhibit C output, but produce -P output.

-!I

Reject include statements.

-!it

Don't infer types of untyped EXTERNAL procedures from use as parameters to previously defined or prototyped procedures.

-!P

Do not attempt to infer ANSI or C++ prototypes from usage.

The resulting C invokes the support routines of f77; object code should be loaded by f77 or with ld(1) or cc(1) options -lF77 -lI77 -lm. Calling conventions are those of f77: see the reference below.
 

FILES

file.[fF]

input file

*.c

output file

header file

intrinsic function library

Fortran I/O library

C library, see section 3

SEE ALSO

DIAGNOSTICS

BUGS

Index

NAME

SYNOPSIS

DESCRIPTION

FILES

SEE ALSO

DIAGNOSTICS

BUGS