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#!/usr/bin/perl -w
#==========================================================================
# median_gendata.pl
#
# Author : Christopher Batten (cbatten@mit.edu)
# Date : May 9, 2005
#
(our $usageMsg = <<'ENDMSG') =~ s/^\#//gm;
#
# Simple script which creates an input data set and the reference data
# for the median benchmark.
#
ENDMSG
use strict "vars";
use warnings;
no warnings("once");
use Getopt::Long;
#--------------------------------------------------------------------------
# Command line processing
#--------------------------------------------------------------------------
our %opts;
sub usage()
{
print "\n";
print " Usage: median_gendata.pl [options] \n";
print "\n";
print " Options:\n";
print " --help print this message\n";
print " --size size of input data [750]\n";
print " --seed random seed [1]\n";
print "$usageMsg";
exit();
}
sub processCommandLine()
{
$opts{"help"} = 0;
$opts{"size"} = 750;
$opts{"seed"} = 1;
Getopt::Long::GetOptions( \%opts, 'help|?', 'size:i', 'seed:i' ) or usage();
$opts{"help"} and usage();
}
#--------------------------------------------------------------------------
# Helper Functions
#--------------------------------------------------------------------------
sub printArray
{
my $arrayName = $_[0];
my $arrayRef = $_[1];
my $numCols = 20;
my $arrayLen = scalar(@{$arrayRef});
print "int ".$arrayName."[DATA_SIZE] = \n";
print "{\n";
if ( $arrayLen <= $numCols ) {
print " ";
for ( my $i = 0; $i < $arrayLen; $i++ ) {
print sprintf("%3d",$arrayRef->[$i]);
if ( $i != $arrayLen-1 ) {
print ", ";
}
}
print "\n";
}
else {
my $numRows = int($arrayLen/$numCols);
for ( my $j = 0; $j < $numRows; $j++ ) {
print " ";
for ( my $i = 0; $i < $numCols; $i++ ) {
my $index = $j*$numCols + $i;
print sprintf("%3d",$arrayRef->[$index]);
if ( $index != $arrayLen-1 ) {
print ", ";
}
}
print "\n";
}
if ( $arrayLen > ($numRows*$numCols) ) {
print " ";
for ( my $i = 0; $i < ($arrayLen-($numRows*$numCols)); $i++ ) {
my $index = $numCols*$numRows + $i;
print sprintf("%3d",$arrayRef->[$index]);
if ( $index != $arrayLen-1 ) {
print ", ";
}
}
print "\n";
}
}
print "};\n\n";
}
#--------------------------------------------------------------------------
# Main
#--------------------------------------------------------------------------
sub main()
{
processCommandLine();
srand($opts{"seed"});
my @values;
for ( my $i = 0; $i < $opts{"size"}; $i++ ) {
push( @values, int(rand(999)) );
}
my @median;
$median[0] = 0;
$median[$opts{"size"}-1] = 0;
for ( my $i = 1; $i < $opts{"size"}-1; $i++ ) {
my @tempList = ( $values[$i-1], $values[$i], $values[$i+1] );
my @sorted = sort { $a <=> $b } @tempList;
$median[$i] = $sorted[1];
}
print "\n\#define DATA_SIZE ".$opts{"size"}." \n\n";
printArray( "input_data", \@values );
printArray( "verify_data", \@median );
}
main();
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