91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
#ifndef _DEMATH_HPP
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#define _DEMATH_HPP
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/*-------------------------------------------------------------------------
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* drawElements Base Portability Library
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* -------------------------------------
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*
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* Copyright 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*//*!
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* \file
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* \brief Basic mathematical operations.
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*//*--------------------------------------------------------------------*/
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#include "deFloat16.h"
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#include "deMath.h"
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#include <limits>
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DE_INLINE double deToDouble (deFloat16 x) { return deFloat16To64(x); }
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DE_INLINE double deToDouble (float x) { return x; }
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DE_INLINE double deToDouble (double x) { return x; }
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template <typename T>
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inline T deToFloatType(double x)
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{
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return static_cast<T>(x);
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}
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template <>
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inline deFloat16 deToFloatType<deFloat16>(double x)
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{
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return deFloat64To16(x);
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}
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// These helpers make the C helpers usable from templates. Because some of
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// these deal with signaling NaN, it's important that no implicit float
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// conversion operations happen.
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DE_INLINE deBool deIsPositiveZero (deFloat16 x) { return deHalfIsPositiveZero(x); }
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DE_INLINE deBool deIsPositiveZero (float x) { return deFloatIsPositiveZero(x); }
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DE_INLINE deBool deIsPositiveZero (double x) { return deDoubleIsPositiveZero(x); }
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DE_INLINE deBool deIsNegativeZero (deFloat16 x) { return deHalfIsNegativeZero(x); }
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DE_INLINE deBool deIsNegativeZero (float x) { return deFloatIsNegativeZero(x); }
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DE_INLINE deBool deIsNegativeZero (double x) { return deDoubleIsNegativeZero(x); }
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DE_INLINE deBool deIsIEEENaN (deFloat16 x) { return deHalfIsIEEENaN(x); }
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DE_INLINE deBool deIsIEEENaN (float x) { return deFloatIsIEEENaN(x); }
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DE_INLINE deBool deIsIEEENaN (double x) { return deDoubleIsIEEENaN(x); }
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DE_INLINE deBool deIsSignalingNaN (deFloat16 x) { return deHalfIsSignalingNaN(x); }
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DE_INLINE deBool deIsSignalingNaN (float x) { return deFloatIsSignalingNaN(x); }
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DE_INLINE deBool deIsSignalingNaN (double x) { return deDoubleIsSignalingNaN(x); }
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DE_INLINE deBool deIsQuietNaN (deFloat16 x) { return deHalfIsQuietNaN(x); }
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DE_INLINE deBool deIsQuietNaN (float x) { return deFloatIsQuietNaN(x); }
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DE_INLINE deBool deIsQuietNaN (double x) { return deDoubleIsQuietNaN(x); }
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template<typename T>
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inline T deQuietNaN()
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{
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return std::numeric_limits<T>::quiet_NaN();
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}
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template<>
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inline deFloat16 deQuietNaN<deFloat16>()
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{
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return deFloat16QuietNaN;
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}
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template<typename T>
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inline T deSignalingNaN()
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{
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return std::numeric_limits<T>::signaling_NaN();
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}
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template<>
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inline deFloat16 deSignalingNaN<deFloat16>()
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{
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return deFloat16SignalingNaN;
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}
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#endif // _DEMATH_HPP
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