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