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// Ceres Solver - A fast non-linear least squares minimizer
// Copyright 2023 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
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// POSSIBILITY OF SUCH DAMAGE.
//
// Author: sameeragarwal@google.com (Sameer Agarwal)
#include "ceres/function_sample.h"
#include "ceres/stringprintf.h"
namespace ceres::internal {
FunctionSample::FunctionSample()
: x(0.0),
vector_x_is_valid(false),
value(0.0),
value_is_valid(false),
vector_gradient_is_valid(false),
gradient(0.0),
gradient_is_valid(false) {}
FunctionSample::FunctionSample(const double x, const double value)
: x(x),
vector_x_is_valid(false),
value(value),
value_is_valid(true),
vector_gradient_is_valid(false),
gradient(0.0),
gradient_is_valid(false) {}
FunctionSample::FunctionSample(const double x,
const double value,
const double gradient)
: x(x),
vector_x_is_valid(false),
value(value),
value_is_valid(true),
vector_gradient_is_valid(false),
gradient(gradient),
gradient_is_valid(true) {}
std::string FunctionSample::ToDebugString() const {
return StringPrintf(
"[x: %.8e, value: %.8e, gradient: %.8e, "
"value_is_valid: %d, gradient_is_valid: %d]",
x,
value,
gradient,
value_is_valid,
gradient_is_valid);
}
} // namespace ceres::internal