#!/bin/sh
#
# Copyright by The HDF Group.
# Copyright by the Board of Trustees of the University of Illinois.
# All rights reserved.
#
# This file is part of HDF.  The full HDF copyright notice, including
# terms governing use, modification, and redistribution, is contained in
# the COPYING file, which can be found at the root of the source code
# distribution tree, or in https://support.hdfgroup.org/ftp/HDF/releases/.
# If you do not have access to either file, you may request a copy from
# help@hdfgroup.org.
#
# Compare the modification time of file argument 1 against other file arguments.
# Return true (0) if argument 1 is newer than all others, otherwise return
# false (1).  If any of the argument is not a file, return false (1).
#

if test $# -lt 2; then
    exit 1
fi
if test ! -f $1; then
    exit 1
fi
f1=$1
shift

for f in $*; do
    if test ! -f $f; then
	exit 1
    fi
    if test X = X`find $f1 -newer $f -print`; then
	exit 1
    fi
done

# passed all tests.  Must be a file newer than all others.
exit 0
