/* 
 * tclXAppInit.c --
 *
 *      Provides a default version of the Tcl_AppInit procedure for use with
 *      applications built with Extended Tcl.  This is based on the the UCB
 *      Tcl file tclAppInit.c
 *
 *-----------------------------------------------------------------------------
 * Copyright 1991-1994 Karl Lehenbauer and Mark Diekhans.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted, provided
 * that the above copyright notice appear in all copies.  Karl Lehenbauer and
 * Mark Diekhans make no representations about the suitability of this
 * software for any purpose.  It is provided "as is" without express or
 * implied warranty.
 *-----------------------------------------------------------------------------
 * $Id: tclXAppInit.c,v 4.0 1994/07/16 05:28:45 markd Rel $
 *-----------------------------------------------------------------------------
 * Copyright (c) 1993 The Regents of the University of California.
 * All rights reserved.
 *
 * Permission is hereby granted, without written agreement and without
 * license or royalty fees, to use, copy, modify, and distribute this
 * software and its documentation for any purpose, provided that the
 * above copyright notice and the following two paragraphs appear in
 * all copies of this software.
 * 
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 */

#include "tclExtend.h"
#include <math.h>

/*
 * The following variable is a special hack that allows applications
 * to be linked using the procedure "main" from the Tcl library.  The
 * variable generates a reference to "main", which causes main to
 * be brought in from the library (and all of Tcl with it).
 */

EXTERN int main _ANSI_ARGS_((int     argc,
                             char  **argv));
int (*tclXDummyMainPtr)() = (int (*)()) main;

/*
 * The following variable is a special hack that insures the tcl
 * version of matherr() is used when linking against shared libraries.
 * Only define if matherr is used on this system.
 */

#if defined(DOMAIN) && defined(SING)
EXTERN int matherr _ANSI_ARGS_((struct exception *));
int (*tclDummyMathPtr)() = (int (*)()) matherr;
#endif


/*
 *----------------------------------------------------------------------
 *
 * Tcl_AppInit --
 *
 *      This procedure performs application-specific initialization.
 *      Most applications, especially those that incorporate additional
 *      packages, will have their own version of this procedure.
 *
 * Results:
 *      Returns a standard Tcl completion code, and leaves an error
 *      message in interp->result if an error occurs.
 *
 * Side effects:
 *      Depends on the startup script.
 *
 *----------------------------------------------------------------------
 */

int
Tcl_AppInit(interp)
    Tcl_Interp *interp;         /* Interpreter for application. */
{
    /*
     * Call the init procedures for included packages.  Each call should
     * look like this:
     *
     * if (Mod_Init(interp) == TCL_ERROR) {
     *     return TCL_ERROR;
     * }
     *
     * where "Mod" is the name of the module.
     */

    /*
     * Add in Extended Tcl commands and source TclX initialization file.
     */
    if (TclX_Init (interp) == TCL_ERROR) {
        return TCL_ERROR;
    }

    /*
     * Call Tcl_CreateCommand for application-specific commands, if
     * they weren't already created by the init procedures called above.
     */

    /*
     * Specify a user-specific startup file to invoke if the application
     * is run interactively.  Typically the startup file is "~/.apprc"
     * where "app" is the name of the application.  If this line is deleted
     * then no user-specific startup file will be run under any conditions.
     */

    tcl_RcFileName = "~/.tclrc";
    return TCL_OK;
}