#!/usr/bin/perl

#
# make-logtab
#
# Generate a table of logarithms of 2 in various bases, for use in
# estimating the output sizes of various bases.

# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is the MPI Arbitrary Precision Integer Arithmetic
# library.
#
# The Initial Developer of the Original Code is
# Michael J. Fromberger <sting@linguist.dartmouth.edu>
# Portions created by the Initial Developer are Copyright (C) 1998, 2000
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
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# ***** END LICENSE BLOCK *****

# $Id: make-logtab,v 1.5 2011/05/23 23:45:11 wtc%google.com Exp $

$ARRAYNAME = $ENV{'ARRAYNAME'} || "s_logv_2";
$ARRAYTYPE = $ENV{'ARRAYTYPE'} || "float";

printf("const %s %s[] = {\n   %0.9ff, %0.9ff, ", 
       $ARRAYTYPE, $ARRAYNAME, 0, 0);
$brk = 2;
for($ix = 2; $ix < 64; $ix++) {
    printf("%0.9ff, ", (log(2)/log($ix)));
    $brk = ($brk + 1) & 3;
    if(!$brk) {
	printf(" /* %2d %2d %2d %2d */\n   ",
	       $ix - 3, $ix - 2, $ix - 1, $ix);
    }
}
printf("%0.9ff\n};\n\n", (log(2)/log($ix)));

exit 0;
