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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/geometry/geometry_test_helpers.h"
#include <limits>
#include <math.h>
namespace blink {
namespace GeometryTest {
bool ApproximatelyEqual(float a, float b, float test_epsilon) {
float abs_a = ::fabs(a);
float abs_b = ::fabs(b);
float abs_err = ::fabs(a - b);
if (a == b)
return true;
if (a == 0 || b == 0 || abs_err < std::numeric_limits<float>::min())
return abs_err < (test_epsilon * std::numeric_limits<float>::min());
return ((abs_err / (abs_a + abs_b)) < test_epsilon);
}
testing::AssertionResult AssertAlmostEqual(const char* actual_expr,
const char* expected_expr,
float actual,
float expected,
float test_epsilon) {
if (!ApproximatelyEqual(actual, expected, test_epsilon)) {
return testing::AssertionFailure()
<< " Value of:" << actual_expr << std::endl
<< " Actual:" << testing::PrintToString(actual) << std::endl
<< "Expected Approx:" << expected_expr << std::endl
<< " Which is:" << testing::PrintToString(expected);
}
return testing::AssertionSuccess();
}
} // namespace GeometryTest
} // namespace blink
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