f2c

SYNOPSIS

       f2c [ option ...  ] file ...

DESCRIPTION

       F2c  converts  Fortran  77 source code in files with names
       ending in `.f' or `.F' to C (or C++) source files  in  the
       current  directory,  with  `.c'  substituted for the final
       `.f' or `.F'.  If no Fortran files are  named,  f2c  reads
       Fortran  from standard input and writes C on standard out
       put.  File names that end with `.p' or `.P' are  taken  to
       be  prototype  files,  as produced by option `-P', and are
       read first.

       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  `-I4' confirms the default ren
              dering of INTEGER as long int.

       -Idir  Look for a non-absolute include file first  in  the
              directory of the current input file, then in direc
              tories specified by -I options (one  directory  per
              option).   Options -I2 and -I4 have precedence, so,
              e.g., a directory named 2 should  be  specified  by
              -I./2 .

       -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, or, if the option is
              `-w66', just Fortran 66 compatibility warnings.

       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,

       -E     Declare uninitialized COMMON to be Extern (overrid
              ably defined in f2c.h 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.

       -f     Assume free-format input: accept text after  column
              72  and  do not pad fixed-format lines shorter than
              72 characters with blanks.

       -72    Treat text appearing after column 72 as an error.

       -g     Include original  Fortran  line  numbers  in  #line
              lines.

       -h     Emulate Fortran 66's treatment of Hollerith: 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 and
              array lengths are stored in short ints.

       -i90   Do not recognize the  Fortran  90  bit-manipulation
              intrinsics  btest, iand, ibclr, ibits, ibset, ieor,
              ior, ishft, and ishftc.

       -kr    Use temporary values to enforce Fortran  expression
              evaluation  where K&R (first edition) parenthesiza
              tion 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 def
              initions  in  each  input  file.f  or file.F.  When
              reading Fortran from standard input,  write  proto
              types  at the beginning of standard output.  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  `-!R'  confirms  the
              default, which imitates f77.
              odd-word alignment of doubles.

       -Wn    Assume  n characters/word (default 4) when initial
              izing 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.

       -!i8   Disallow   INTEGER*8   ,   or,  if  the  option  is
              `-!i8const', permit INTEGER*8 but  do  not  promote
              integer  constants  to  INTEGER*8 when they involve
              more than 32 bits.

       -!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

       /usr/include/f2c.h
              header file

       /usr/lib/libF77.a
              intrinsic function library

       /usr/lib/libI77.a
              Fortran I/O library

       /lib/libc.a
              C library, see section 3

f2c

SYNOPSIS

DESCRIPTION

FILES

SEE ALSO