Wyatt Hepler | 0412a7d | 2020-01-28 16:27:32 -0800 | [diff] [blame] | 1 | // Copyright 2020 The Pigweed Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 4 | // use this file except in compliance with the License. You may obtain a copy of |
| 5 | // the License at |
| 6 | // |
| 7 | // https://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 11 | // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 12 | // License for the specific language governing permissions and limitations under |
| 13 | // the License. |
| 14 | #pragma once |
| 15 | |
| 16 | #include <math.h> |
| 17 | |
Wyatt Hepler | 023f35b | 2020-07-01 09:40:50 -0700 | [diff] [blame] | 18 | #include "pw_polyfill/standard_library/namespace.h" |
| 19 | |
| 20 | _PW_POLYFILL_BEGIN_NAMESPACE_STD |
Wyatt Hepler | 0412a7d | 2020-01-28 16:27:32 -0800 | [diff] [blame] | 21 | |
| 22 | // The integer overloads of these functions are not provided. |
| 23 | |
| 24 | // This is not technically correct, but avoids ambiguous calls to an overloaded |
| 25 | // abs function. |
| 26 | template <typename T> |
| 27 | inline T abs(T value) { |
| 28 | return value < 0 ? -value : value; |
| 29 | } |
| 30 | |
| 31 | #ifdef isfinite |
| 32 | #undef isfinite |
| 33 | #endif // isfinite |
| 34 | |
| 35 | inline bool isfinite(float value) { return __builtin_isfinite(value); } |
| 36 | inline bool isfinite(double value) { return __builtin_isfinite(value); } |
| 37 | inline bool isfinite(long double value) { return __builtin_isfinite(value); } |
| 38 | |
| 39 | #ifdef isnan |
| 40 | #undef isnan |
| 41 | #endif // isnan |
| 42 | |
| 43 | inline bool isnan(float value) { return __builtin_isnan(value); } |
| 44 | inline bool isnan(double value) { return __builtin_isnan(value); } |
| 45 | inline bool isnan(long double value) { return __builtin_isnan(value); } |
| 46 | |
| 47 | #ifdef signbit |
| 48 | #undef signbit |
| 49 | #endif // signbit |
| 50 | |
| 51 | inline bool signbit(float value) { return __builtin_signbit(value); } |
| 52 | inline bool signbit(double value) { return __builtin_signbit(value); } |
| 53 | inline bool signbit(long double value) { return __builtin_signbit(value); } |
| 54 | |
| 55 | using ::round; |
| 56 | |
Wyatt Hepler | 023f35b | 2020-07-01 09:40:50 -0700 | [diff] [blame] | 57 | _PW_POLYFILL_END_NAMESPACE_STD |