Basic benchmark for gmpi vs decimal, using bcmath as reference

gmpi_dec_bench.php

<?php
ini_set('memory_limit', -1);
srand(0);

$length = 100000;
$maxInt = 10 ** 10;
$values = [];

for ($i = 0; $i < $length; $i++) {
    $int = (rand() % $maxInt);
    $dec = (rand() % $maxInt);

    $values[] =  0;
    $values[] =  1;
    $values[] =  0.5;
    $values[] =  1.5;
    $values[] =  '0.5';
    $values[] =  '1.5';
    $values[] = "$int.$dec";
    $values[] = (int) ("$int.$dec");
    $values[] = (float) ("$int.$dec");
}

$benchmark = function($name, $obj) use ($values) {
    $time = microtime(true);

    foreach ($values as $value) {
        $obj = $obj + $value;
        $obj = $obj + $value;
        $obj = $obj - $value;
    }

    $time = round(microtime(true) - $time, 4);

    print_r([
        'title' => $name,
        'taken' => $time,
        'value' => (string) $obj,
    ]);
};

$reference = function() use ($values) {
    $res = 0;
    foreach ($values as $value) {
        $res = bcadd($res, $value, 20);
        $res = bcadd($res, $value, 20);
        $res = bcsub($res, $value, 20);
    }

    print_r([
        'title' => 'bcmath',
        'taken' => '-',
        'value' => (string) $res,
    ]);
};

ini_set('decimal.precision', 200);
ini_set('gmpi.precision',    200);

$benchmark('gmpi', new \GMPi\Float(0));
$benchmark('decimal', new \Decimal\Decimal(0));
$reference();