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// Ceres Solver - A fast non-linear least squares minimizer
// Copyright 2015 Google Inc. All rights reserved.
// http://ceres-solver.org/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of Google Inc. nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Author: keir@google.com (Keir Mierle)
#include <string>
#include "ceres/internal/port.h"
#ifndef CERES_INTERNAL_TEST_UTIL_H_
#define CERES_INTERNAL_TEST_UTIL_H_
namespace ceres {
namespace internal {
// Expects that x and y have a relative difference of no more than
// max_abs_relative_difference. If either x or y is zero, then the relative
// difference is interpreted as an absolute difference.
bool ExpectClose(double x, double y, double max_abs_relative_difference);
// Expects that for all i = 1,.., n - 1
//
// |p[i] - q[i]| / max(|p[i]|, |q[i]|) < tolerance
void ExpectArraysClose(int n,
const double* p,
const double* q,
double tolerance);
// Expects that for all i = 1,.., n - 1
//
// |p[i] / max_norm_p - q[i] / max_norm_q| < tolerance
//
// where max_norm_p and max_norm_q are the max norms of the arrays p
// and q respectively.
void ExpectArraysCloseUptoScale(int n,
const double* p,
const double* q,
double tolerance);
// Construct a fully qualified path for the test file depending on the
// local build/testing environment.
std::string TestFileAbsolutePath(const std::string& filename);
} // namespace internal
} // namespace ceres
#endif // CERES_INTERNAL_TEST_UTIL_H_