10ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Ceres Solver - A fast non-linear least squares minimizer 20ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Copyright 2012 Google Inc. All rights reserved. 30ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// http://code.google.com/p/ceres-solver/ 40ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 50ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Redistribution and use in source and binary forms, with or without 60ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// modification, are permitted provided that the following conditions are met: 70ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 80ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// * Redistributions of source code must retain the above copyright notice, 90ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// this list of conditions and the following disclaimer. 100ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// * Redistributions in binary form must reproduce the above copyright notice, 110ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// this list of conditions and the following disclaimer in the documentation 120ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// and/or other materials provided with the distribution. 130ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// * Neither the name of Google Inc. nor the names of its contributors may be 140ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// used to endorse or promote products derived from this software without 150ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// specific prior written permission. 160ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 170ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 180ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 190ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 200ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 210ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 220ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 230ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 240ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 250ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 260ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 270ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// POSSIBILITY OF SUCH DAMAGE. 280ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 290ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Author: keir@google.com (Keir Mierle) 300ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 310ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Portable floating point classification. The names are picked such that they 320ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// do not collide with macros. For example, "isnan" in C99 is a macro and hence 330ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// does not respect namespaces. 340ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 350ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// TODO(keir): Finish porting! 360ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 370ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#ifndef CERES_PUBLIC_FPCLASSIFY_H_ 380ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#define CERES_PUBLIC_FPCLASSIFY_H_ 390ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 400ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#if defined(_MSC_VER) 410ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#include <float.h> 420ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#endif 430ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 441d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling#include <limits> 451d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling 460ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongnamespace ceres { 470ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 480ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#if defined(_MSC_VER) 4979397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandez 5079397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandezinline bool IsFinite (double x) { return _finite(x) != 0; } 5179397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandezinline bool IsInfinite(double x) { return _finite(x) == 0 && _isnan(x) == 0; } 5279397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandezinline bool IsNaN (double x) { return _isnan(x) != 0; } 530ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Konginline bool IsNormal (double x) { 540ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong int classification = _fpclass(x); 550ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong return classification == _FPCLASS_NN || 560ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong classification == _FPCLASS_PN; 570ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} 580ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 5979397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandez#elif defined(ANDROID) && defined(_STLPORT_VERSION) 6079397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandez 6179397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandez// On Android, when using the STLPort, the C++ isnan and isnormal functions 6279397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandez// are defined as macros. 630ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Konginline bool IsNaN (double x) { return isnan(x); } 640ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Konginline bool IsNormal (double x) { return isnormal(x); } 650ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// On Android NDK r6, when using STLPort, the isinf and isfinite functions are 660ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// not available, so reimplement them. 670ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Konginline bool IsInfinite(double x) { 680ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong return x == std::numeric_limits<double>::infinity() || 690ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong x == -std::numeric_limits<double>::infinity(); 700ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} 710ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Konginline bool IsFinite(double x) { 720ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong return !isnan(x) && !IsInfinite(x); 730ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} 7479397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandez 7579397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandez# else 7679397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandez 770ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// These definitions are for the normal Unix suspects. 780ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Konginline bool IsFinite (double x) { return std::isfinite(x); } 790ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Konginline bool IsInfinite(double x) { return std::isinf(x); } 800ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Konginline bool IsNaN (double x) { return std::isnan(x); } 810ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Konginline bool IsNormal (double x) { return std::isnormal(x); } 8279397c21138f54fcff6ec067b44b847f1f7e0e98Carlos Hernandez 830ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#endif 840ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 850ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} // namespace ceres 860ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 870ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#endif // CERES_PUBLIC_FPCLASSIFY_H_ 88