1// Ceres Solver - A fast non-linear least squares minimizer 2// Copyright 2010, 2011, 2012 Google Inc. All rights reserved. 3// http://code.google.com/p/ceres-solver/ 4// 5// Redistribution and use in source and binary forms, with or without 6// modification, are permitted provided that the following conditions are met: 7// 8// * Redistributions of source code must retain the above copyright notice, 9// this list of conditions and the following disclaimer. 10// * Redistributions in binary form must reproduce the above copyright notice, 11// this list of conditions and the following disclaimer in the documentation 12// and/or other materials provided with the distribution. 13// * Neither the name of Google Inc. nor the names of its contributors may be 14// used to endorse or promote products derived from this software without 15// specific prior written permission. 16// 17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27// POSSIBILITY OF SUCH DAMAGE. 28// 29// Author: keir@google.com (Keir Mierle) 30 31#include <string> 32#include "ceres/internal/port.h" 33 34#ifndef CERES_INTERNAL_TEST_UTIL_H_ 35#define CERES_INTERNAL_TEST_UTIL_H_ 36 37namespace ceres { 38namespace internal { 39 40// Expects that x and y have a relative difference of no more than 41// max_abs_relative_difference. If either x or y is zero, then the relative 42// difference is interpreted as an absolute difference. 43bool ExpectClose(double x, double y, double max_abs_relative_difference); 44 45// Expects that for all i = 1,.., n - 1 46// 47// |p[i] - q[i]| / max(|p[i]|, |q[i]|) < tolerance 48void ExpectArraysClose(int n, 49 const double* p, 50 const double* q, 51 double tolerance); 52 53// Expects that for all i = 1,.., n - 1 54// 55// |p[i] / max_norm_p - q[i] / max_norm_q| < tolerance 56// 57// where max_norm_p and max_norm_q are the max norms of the arrays p 58// and q respectively. 59void ExpectArraysCloseUptoScale(int n, 60 const double* p, 61 const double* q, 62 double tolerance); 63 64// Construct a fully qualified path for the test file depending on the 65// local build/testing environment. 66string TestFileAbsolutePath(const string& filename); 67 68} // namespace internal 69} // namespace ceres 70 71#endif // CERES_INTERNAL_TEST_UTIL_H_ 72