(* wrapc.def provides access to more of the C library.

Copyright (C) 2001-2024 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.

This file is part of GNU Modula-2.

GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  *)

DEFINITION MODULE wrapc ;

FROM SYSTEM IMPORT ADDRESS ;


(*
   strtime - returns the C string for the equivalent C asctime
             function.
*)

PROCEDURE strtime () : ADDRESS ;


(*
   filesize - assigns the size of a file, f, into low, high and
              returns zero if successful.
*)

PROCEDURE filesize (f: INTEGER; VAR low, high: CARDINAL) : INTEGER ;


(*
   fileinode - return the inode associated with file, f.
*)

PROCEDURE fileinode (f: INTEGER; VAR low, high: CARDINAL) : INTEGER ;


(*
   filemtime - returns the mtime of a file, f.
*)

PROCEDURE filemtime (f: INTEGER) : INTEGER ;


(*
   getrand - returns a random number between 0..n-1
*)

PROCEDURE getrand (n: INTEGER) : INTEGER ;


(*
   getusername - returns a C string describing the current user.
*)

PROCEDURE getusername () : ADDRESS ;


(*
   getnameuidgid - fills in the, uid, and, gid, which represents
                   user, name.
*)

PROCEDURE getnameuidgid (name: ADDRESS; VAR uid, gid: INTEGER) ;


(*
   in C these procedure functions are really macros, so we provide
   real C functions and let gm2 call these if the builtins
   are unavailable.
*)

PROCEDURE signbit (r: REAL) : INTEGER ;
PROCEDURE signbitf (s: SHORTREAL) : INTEGER ;
PROCEDURE signbitl (l: LONGREAL) : INTEGER ;


(*
   isfinite - provide non builtin alternative to the gcc builtin isfinite.
              Returns 1 if x is finite and 0 if it is not.
*)

PROCEDURE isfinite (x: REAL) : INTEGER ;


(*
   isfinitef - provide non builtin alternative to the gcc builtin isfinite.
               Returns 1 if x is finite and 0 if it is not.
*)

PROCEDURE isfinitef (x: SHORTREAL) : INTEGER ;


(*
   isfinitel - provide non builtin alternative to the gcc builtin isfinite.
               Returns 1 if x is finite and 0 if it is not.
*)

PROCEDURE isfinitel (x: LONGREAL) : INTEGER ;


(*
   isnan - provide non builtin alternative to the gcc builtin isnan.
           Returns 1 if x is a NaN otherwise return 0.
*)

PROCEDURE isnan (x: REAL) : INTEGER ;


(*
   isnanf - provide non builtin alternative to the gcc builtin isnanf.
            Returns 1 if x is a NaN otherwise return 0.
*)

PROCEDURE isnanf (x: SHORTREAL) : INTEGER ;


(*
   isnanl - provide non builtin alternative to the gcc builtin isnanl.
            Returns 1 if x is a NaN otherwise return 0.
*)

PROCEDURE isnanl (x: LONGREAL) : INTEGER ;


(*
   SeekSet - return the system libc SEEK_SET value.
*)

PROCEDURE SeekSet () : INTEGER ;


(*
    SeekEnd - return the system libc SEEK_END value.
*)

PROCEDURE SeekEnd () : INTEGER ;


(*
   ReadOnly - return the system value of O_RDONLY.
*)

PROCEDURE ReadOnly () : BITSET ;


(*
   WriteOnly - return the system value of O_WRONLY.
*)

PROCEDURE WriteOnly () : BITSET ;


END wrapc.