| // 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 geometry_test { |
| |
| 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 geometry_test |
| } // namespace blink |
