examples/benchmark/sort

   1 #!/usr/bin/perl -w
   2 use strict;
   3 use Math::GSL::Sort qw/:all/;
   4 use Math::GSL::RNG  qw/:all/;
   5 use Benchmark       qw/:all/;
   6 use Data::Dumper;
   7
   8 my $count  = shift || 1000;
   9 my $length = shift || 5000;
  10 my $rng    = Math::GSL::RNG->new;
  11 my @data1   = map { (-1)**$_ * $rng->get        } (1..$length);
  12 my @data2   = map { (-1)**$_ * int(rand(2**30)) } (1..$length);
  13 my @stuff;
  14
  15 print "Benchmarking for Math::GSL::RNG data\n";
  16 timethese($count, {
  17             'perl sort     ' => sub { @stuff = sort { $a <=> $b } @data1 },
  18             'Math::GSL sort' => sub { @stuff = gsl_sort(\@data1,1,$#data1+1) },
  19 });
  20
  21 print "Benchmarking for rand() data\n";
  22 timethese($count, {
  23             'perl sort     ' => sub { @stuff = sort { $a <=> $b } @data2 },
  24             'Math::GSL sort' => sub { @stuff = gsl_sort(\@data2,1,$#data2+1) },
  25 });