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/* Copyright (C) 2002-2003 Free Software Foundation, Inc.
Contributed by Andy Vaught and Paul Brook <paul@nowt.org>
This file is part of the GNU Fortran 95 runtime library (libgfor).
Libgfor 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 2, or (at your option)
any later version.
Libgfor 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.
You should have received a copy of the GNU General Public License
along with libgfor; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stddef.h>
#include "libgfortran.h"
/* This is the offset (in bytes) required to cast from logical(8)* to
logical(4)*. and still get the same result. Will be 0 for little-endian
machines and 4 for big-endian machines. */
int l8_to_l4_offset = 0;
/* Figure out endianness for this machine. */
static void
determine_endianness (void)
{
union
{
GFC_LOGICAL_8 l8;
GFC_LOGICAL_4 l4[2];
} u;
u.l8 = 1;
if (u.l4[0])
l8_to_l4_offset = 0;
else if (u.l4[1])
l8_to_l4_offset = 1;
else
runtime_error ("Unable to determine machine endianness");
}
static int argc_save;
static char **argv_save;
/* Set the saved values of the command line arguments. */
void
set_args (int argc, char **argv)
{
argc_save = argc;
argv_save = argv;
}
/* Retrieve the saved values of the command line arguments. */
void
get_args (int *argc, char ***argv)
{
*argc = argc_save;
*argv = argv_save;
}
/* Initialize the runtime library. */
static void __attribute__((constructor))
init (void)
{
/* Figure out the machine endianness. */
determine_endianness ();
/* Must be first */
init_variables ();
init_units ();
#ifdef DEBUG
/* Check for special command lines. */
if (argc > 1 && strcmp (argv[1], "--help") == 0)
show_variables ();
/* if (argc > 1 && strcmp(argv[1], "--resume") == 0) resume(); */
#endif
random_seed(NULL,NULL,NULL);
}
/* Cleanup the runtime library. */
static void __attribute__((destructor))
cleanup ()
{
close_units ();
}
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