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178 lines
7.0 KiB
178 lines
7.0 KiB
// Ceres Solver - A fast non-linear least squares minimizer
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// Copyright 2015 Google Inc. All rights reserved.
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// http://ceres-solver.org/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Google Inc. nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: dgossow@google.com (David Gossow)
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//
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// This file contains tests for the IsClose function.
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#include "ceres/is_close.h"
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#include "gtest/gtest.h"
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namespace ceres {
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namespace internal {
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const double kTolerance = 1e-9;
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TEST(IsClose, BothParametersPositive) {
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double relative_error = -1;
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double absolute_error = -1;
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// Test cases where both values are positive.
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EXPECT_TRUE(IsClose(9.9, 10.0, 0.011, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 0.01, kTolerance);
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EXPECT_NEAR(absolute_error, 0.1, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_TRUE(IsClose(10.0, 9.9, 0.011, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 0.01, kTolerance);
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EXPECT_NEAR(absolute_error, 0.1, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_FALSE(IsClose(9.9, 10.0, 0.009, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 0.01, kTolerance);
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EXPECT_NEAR(absolute_error, 0.1, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_FALSE(IsClose(10.0, 9.9, 0.009, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 0.01, kTolerance);
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EXPECT_NEAR(absolute_error, 0.1, kTolerance);
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}
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TEST(IsClose, BothParametersNegative) {
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double relative_error = -1;
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double absolute_error = -1;
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// Test cases where both values are negative.
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EXPECT_TRUE(IsClose(-9.9, -10.0, 0.011, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 0.01, kTolerance);
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EXPECT_NEAR(absolute_error, 0.1, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_TRUE(IsClose(-10.0, -9.9, 0.011, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 0.01, kTolerance);
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EXPECT_NEAR(absolute_error, 0.1, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_FALSE(IsClose(-9.9, -10.0, 0.009, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 0.01, kTolerance);
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EXPECT_NEAR(absolute_error, 0.1, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_FALSE(IsClose(-10.0, -9.9, 0.009, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 0.01, kTolerance);
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EXPECT_NEAR(absolute_error, 0.1, kTolerance);
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}
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TEST(IsClose, ParametersHaveMixedSigns) {
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double relative_error = -1;
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double absolute_error = -1;
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// Test cases with mixed signs.
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EXPECT_FALSE(IsClose(-0.1, 0.1, 1.99, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 2.0, kTolerance);
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EXPECT_NEAR(absolute_error, 0.2, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_TRUE(IsClose(-0.1, 0.1, 2.01, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 2.0, kTolerance);
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EXPECT_NEAR(absolute_error, 0.2, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_FALSE(IsClose(0.1, -0.1, 1.99, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 2.0, kTolerance);
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EXPECT_NEAR(absolute_error, 0.2, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_TRUE(IsClose(0.1, -0.1, 2.01, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 2.0, kTolerance);
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EXPECT_NEAR(absolute_error, 0.2, kTolerance);
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}
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TEST(IsClose, OneParameterZero) {
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double relative_error = -1;
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double absolute_error = -1;
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// Test cases where one of the values is zero.
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EXPECT_TRUE(IsClose(0.0, 10.0, 10.1, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 10.0, kTolerance);
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EXPECT_NEAR(absolute_error, 10.0, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_TRUE(IsClose(10.0, 0.0, 10.1, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 10.0, kTolerance);
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EXPECT_NEAR(absolute_error, 10.0, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_TRUE(IsClose(0.0, -10.0, 10.1, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 10.0, kTolerance);
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EXPECT_NEAR(absolute_error, 10.0, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_TRUE(IsClose(-10.0, 0.0, 10.1, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 10.0, kTolerance);
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EXPECT_NEAR(absolute_error, 10.0, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_FALSE(IsClose(0, 10.0, 9.9, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 10.0, kTolerance);
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EXPECT_NEAR(absolute_error, 10.0, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_FALSE(IsClose(10.0, 0.0, 9.9, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 10.0, kTolerance);
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EXPECT_NEAR(absolute_error, 10.0, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_FALSE(IsClose(0, -10.0, 9.9, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 10.0, kTolerance);
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EXPECT_NEAR(absolute_error, 10.0, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_FALSE(IsClose(-10.0, 0.0, 9.9, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 10.0, kTolerance);
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EXPECT_NEAR(absolute_error, 10.0, kTolerance);
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}
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TEST(IsClose, BothParametersZero) {
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double relative_error = -1;
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double absolute_error = -1;
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EXPECT_TRUE(IsClose(0.0, 0.0, 0.1, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 0.0, kTolerance);
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EXPECT_NEAR(absolute_error, 0.0, kTolerance);
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relative_error = -1;
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absolute_error = -1;
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EXPECT_FALSE(IsClose(0.0, 0.0, 0.0, &relative_error, &absolute_error));
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EXPECT_NEAR(relative_error, 0.0, kTolerance);
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EXPECT_NEAR(absolute_error, 0.0, kTolerance);
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}
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} // namespace internal
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} // namespace ceres
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