1 // Ceres Solver - A fast non-linear least squares minimizer
2 // Copyright 2015 Google Inc. All rights reserved.
3 // http://ceres-solver.org/
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions are met:
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.
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
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29 // Author: sameeragarwal@google.com (Sameer Agarwal)
31 #include "ceres/function_sample.h"
32 #include "ceres/stringprintf.h"
37 FunctionSample::FunctionSample()
39 vector_x_is_valid(false),
41 value_is_valid(false),
42 vector_gradient_is_valid(false),
44 gradient_is_valid(false) {}
46 FunctionSample::FunctionSample(const double x, const double value)
48 vector_x_is_valid(false),
51 vector_gradient_is_valid(false),
53 gradient_is_valid(false) {}
55 FunctionSample::FunctionSample(const double x,
57 const double gradient)
59 vector_x_is_valid(false),
62 vector_gradient_is_valid(false),
64 gradient_is_valid(true) {}
66 std::string FunctionSample::ToDebugString() const {
67 return StringPrintf("[x: %.8e, value: %.8e, gradient: %.8e, "
68 "value_is_valid: %d, gradient_is_valid: %d]",
69 x, value, gradient, value_is_valid, gradient_is_valid);
72 } // namespace internal