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115 lines
4.0 KiB
Plaintext
115 lines
4.0 KiB
Plaintext
/****************************************************************************
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*
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* Copyright (C) 2022 PX4 Development Team. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name PX4 nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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// minimal cmath
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#pragma once
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#include <cstdlib>
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#include <inttypes.h>
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#include <math.h>
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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namespace std
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{
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#if !defined(FLT_EPSILON)
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#define FLT_EPSILON __FLT_EPSILON__
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#endif
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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 isinf
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#undef isinf
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#endif // isinf
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inline bool isinf(float value) { return __builtin_isinf_sign(value); }
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inline bool isinf(double value) { return __builtin_isinf_sign(value); }
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inline bool isinf(long double value) { return __builtin_isinf_sign(value); }
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/*
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* NuttX has no usable C++ math library, so we need to provide the needed definitions here manually.
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*/
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#define NUTTX_WRAP_MATH_FUN_UNARY(name) \
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inline float name(float x) { return ::name##f(x); } \
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inline double name(double x) { return ::name(x); } \
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inline long double name(long double x) { return ::name##l(x); }
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#define NUTTX_WRAP_MATH_FUN_BINARY(name) \
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inline float name(float x, float y) { return ::name##f(x, y); } \
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inline double name(double x, double y) { return ::name(x, y); } \
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inline long double name(long double x, long double y) { return ::name##l(x, y); }
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NUTTX_WRAP_MATH_FUN_UNARY(fabs)
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NUTTX_WRAP_MATH_FUN_UNARY(log)
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NUTTX_WRAP_MATH_FUN_UNARY(log10)
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NUTTX_WRAP_MATH_FUN_UNARY(exp)
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NUTTX_WRAP_MATH_FUN_UNARY(sqrt)
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NUTTX_WRAP_MATH_FUN_UNARY(sin)
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NUTTX_WRAP_MATH_FUN_UNARY(cos)
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NUTTX_WRAP_MATH_FUN_UNARY(tan)
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NUTTX_WRAP_MATH_FUN_UNARY(asin)
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NUTTX_WRAP_MATH_FUN_UNARY(acos)
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NUTTX_WRAP_MATH_FUN_UNARY(atan)
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NUTTX_WRAP_MATH_FUN_UNARY(sinh)
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NUTTX_WRAP_MATH_FUN_UNARY(cosh)
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NUTTX_WRAP_MATH_FUN_UNARY(tanh)
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NUTTX_WRAP_MATH_FUN_UNARY(ceil)
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NUTTX_WRAP_MATH_FUN_UNARY(floor)
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NUTTX_WRAP_MATH_FUN_BINARY(pow)
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NUTTX_WRAP_MATH_FUN_BINARY(atan2)
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}
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