--- /dev/null
+<?php
+/*
+ * This file is part of the Comparator package.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace SebastianBergmann\Comparator;
+
+/**
+ * Compares numerical values for equality.
+ */
+class NumericComparator extends ScalarComparator
+{
+ /**
+ * Returns whether the comparator can compare two values.
+ *
+ * @param mixed $expected The first value to compare
+ * @param mixed $actual The second value to compare
+ * @return bool
+ */
+ public function accepts($expected, $actual)
+ {
+ // all numerical values, but not if one of them is a double
+ // or both of them are strings
+ return is_numeric($expected) && is_numeric($actual) &&
+ !(is_double($expected) || is_double($actual)) &&
+ !(is_string($expected) && is_string($actual));
+ }
+
+ /**
+ * Asserts that two values are equal.
+ *
+ * @param mixed $expected First value to compare
+ * @param mixed $actual Second value to compare
+ * @param float $delta Allowed numerical distance between two values to consider them equal
+ * @param bool $canonicalize Arrays are sorted before comparison when set to true
+ * @param bool $ignoreCase Case is ignored when set to true
+ *
+ * @throws ComparisonFailure
+ */
+ public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false)
+ {
+ if (is_infinite($actual) && is_infinite($expected)) {
+ return;
+ }
+
+ if ((is_infinite($actual) xor is_infinite($expected)) ||
+ (is_nan($actual) or is_nan($expected)) ||
+ abs($actual - $expected) > $delta) {
+ throw new ComparisonFailure(
+ $expected,
+ $actual,
+ '',
+ '',
+ false,
+ sprintf(
+ 'Failed asserting that %s matches expected %s.',
+ $this->exporter->export($actual),
+ $this->exporter->export($expected)
+ )
+ );
+ }
+ }
+}