diff options
Diffstat (limited to 'extern/libmv/third_party/ceres/internal/ceres/array_utils.h')
| -rw-r--r-- | extern/libmv/third_party/ceres/internal/ceres/array_utils.h | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/extern/libmv/third_party/ceres/internal/ceres/array_utils.h b/extern/libmv/third_party/ceres/internal/ceres/array_utils.h deleted file mode 100644 index 7f56947066b..00000000000 --- a/extern/libmv/third_party/ceres/internal/ceres/array_utils.h +++ /dev/null @@ -1,88 +0,0 @@ -// Ceres Solver - A fast non-linear least squares minimizer -// Copyright 2012 Google Inc. All rights reserved. -// http://code.google.com/p/ceres-solver/ -// -// 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: sameeragarwal@google.com (Sameer Agarwal) -// -// Utility routines for validating arrays. -// -// These are useful for detecting two common class of errors. -// -// 1. Uninitialized memory - where the user for some reason did not -// compute part of an array, but the code expects it. -// -// 2. Numerical failure while computing the cost/residual/jacobian, -// e.g. NaN, infinities etc. This is particularly useful since the -// automatic differentiation code does computations that are not -// evident to the user and can silently generate hard to debug errors. - -#ifndef CERES_INTERNAL_ARRAY_UTILS_H_ -#define CERES_INTERNAL_ARRAY_UTILS_H_ - -#include "ceres/internal/port.h" - -namespace ceres { -namespace internal { - -// Fill the array x with an impossible value that the user code is -// never expected to compute. -void InvalidateArray(int size, double* x); - -// Check if all the entries of the array x are valid, i.e. all the -// values in the array should be finite and none of them should be -// equal to the "impossible" value used by InvalidateArray. -bool IsArrayValid(int size, const double* x); - -// If the array contains an invalid value, return the index for it, -// otherwise return size. -int FindInvalidValue(const int size, const double* x); - -// Utility routine to print an array of doubles to a string. If the -// array pointer is NULL, it is treated as an array of zeros. -void AppendArrayToString(const int size, const double* x, string* result); - -extern const double kImpossibleValue; - -// This routine takes an array of integer values, sorts and uniques -// them and then maps each value in the array to its position in the -// sorted+uniqued array. By doing this, if there are are k unique -// values in the array, each value is replaced by an integer in the -// range [0, k-1], while preserving their relative order. -// -// For example -// -// [1 0 3 5 0 1 5] -// -// gets mapped to -// -// [1 0 2 3 0 1 3] -void MapValuesToContiguousRange(int size, int* array); - -} // namespace internal -} // namespace ceres - -#endif // CERES_INTERNAL_ARRAY_UTILS_H_ |