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29 lines
859 B
C++
29 lines
859 B
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_LIB_UI_FLOATING_POINT_H_
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#define FLUTTER_LIB_UI_FLOATING_POINT_H_
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#include <algorithm>
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#include <limits>
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namespace flutter {
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/// Converts a double to a float, truncating finite values that are larger than
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/// FLT_MAX or smaller than FLT_MIN to those values.
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static float SafeNarrow(double value) {
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if (std::isinf(value) || std::isnan(value)) {
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return static_cast<float>(value);
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} else {
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// Avoid truncation to inf/-inf.
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return std::clamp(static_cast<float>(value),
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std::numeric_limits<float>::lowest(),
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std::numeric_limits<float>::max());
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}
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}
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} // namespace flutter
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#endif // FLUTTER_LIB_UI_FLOATING_POINT_H_
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