58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
// Copyright 2020 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#pragma once
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#include <math.h>
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#include "pw_polyfill/standard_library/namespace.h"
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_PW_POLYFILL_BEGIN_NAMESPACE_STD
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// The integer overloads of these functions are not provided.
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// This is not technically correct, but avoids ambiguous calls to an overloaded
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// abs function.
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template <typename T>
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inline T abs(T value) {
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return value < 0 ? -value : value;
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}
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#ifdef isfinite
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#undef isfinite
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#endif // isfinite
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inline bool isfinite(float value) { return __builtin_isfinite(value); }
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inline bool isfinite(double value) { return __builtin_isfinite(value); }
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inline bool isfinite(long double value) { return __builtin_isfinite(value); }
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#ifdef isnan
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#undef isnan
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#endif // isnan
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inline bool isnan(float value) { return __builtin_isnan(value); }
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inline bool isnan(double value) { return __builtin_isnan(value); }
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inline bool isnan(long double value) { return __builtin_isnan(value); }
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#ifdef signbit
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#undef signbit
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#endif // signbit
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inline bool signbit(float value) { return __builtin_signbit(value); }
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inline bool signbit(double value) { return __builtin_signbit(value); }
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inline bool signbit(long double value) { return __builtin_signbit(value); }
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using ::round;
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_PW_POLYFILL_END_NAMESPACE_STD
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