ScriptEngineAnyOp.h

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/*
* SPDX-FileCopyrightText: Copyright (c) 2020-2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
 
 
#ifndef NVNEURAL_SCRIPTENGINEANYOP_H
#define NVNEURAL_SCRIPTENGINEANYOP_H
 
#include <cassert>
#include <nvneural/CoreTypes.h>
 
namespace nvneural {
namespace detail {
 
    class AnyOperand
    {
    public:
        AnyOperand();
        AnyOperand(const AnyOperand& val);
        AnyOperand(void* pVal);
        AnyOperand(const Float16& val);
 
        template<class T>
        AnyOperand(const T& val)
        {
            if (std::is_floating_point<T>::value)
            {
                setReal(val);
            }
            else if (std::is_integral<T>::value)
            {
                setInteger(val);
            }
            else if (!std::is_pointer<T>::value)
            {
                m_type = WRONG;
                m_signed = false;
                m_depth = 0;
            }
            else
            {
                assert(false);
            }
        }
 
        AnyOperand& operator=(const AnyOperand& val);
 
        template<class T>
        void setInteger(T val)
        {
            m_depth = sizeof(T) * 8;
            m_type = INTEGER;
            m_signed = std::is_signed<T>::value;
            m_evaluation.s = val;
        }
 
        template<class T>
        void setReal(T val)
        {
            m_depth = sizeof(T) * 8;
            m_type = REAL;
            m_signed = true;
            m_evaluation.r = val;
        }
 
        template<class T>
        bool canTransform()
        {
            if (std::is_floating_point<T>::value || std::is_same<T, Float16>::value)
            {
                if (m_type == INTEGER || m_type == REAL)
                {
                    return true;
                }
            }
            else if (std::is_integral<T>::value)
            {
                if (m_type == INTEGER || m_type == REAL)
                {
                    return true;
                }
            }
            else if (std::is_pointer<T>::value)
            {
                return m_type == POINTER;
            }
            return false;
        }
 
        template<class T>
        void transform()
        {
            if (std::is_floating_point<T>::value || std::is_same<T, Float16>::value)
            {
                if (m_type == INTEGER)
                {
                    m_type = REAL;
                    if (m_signed)
                    {
                        m_evaluation.r = m_evaluation.s;
                    }
                    else
                    {
                        m_evaluation.r = m_evaluation.u;
                    }
                    m_signed = true;
                    m_depth = sizeof(T) * 8;
                    return;
                }
                else if (m_type == REAL)
                {
                    m_depth = sizeof(T) * 8;
                    return;
                }
            }
            else if (std::is_integral<T>::value)
            {
                if (m_type == INTEGER)
                {
                    m_depth = sizeof(T) * 8;
                    m_signed = std::is_signed<T>::value;
                    return;
                }
                else if (m_type == REAL)
                {
                    m_type = INTEGER;
                    m_evaluation.s = m_evaluation.r;
                    m_signed = std::is_signed<T>::value;
                    m_depth = sizeof(T) * 8;
                    return;
                }
            }
            m_type = WRONG;
            m_signed = false;
            m_depth = 0;
        }
 
        void setPointer(void* pVal, int memsize = 0);
 
        enum TypeCode
        {
            POINTER,
            INTEGER,
            REAL,
            WRONG
        };
 
        static std::vector<AnyOperand> divUp(const AnyOperand& op1, const AnyOperand& op2, bool typing);
        static std::vector<AnyOperand> findDivisor(const AnyOperand& x, bool typing);
 
        void sub(const AnyOperand& op, bool fp16, bool typing);
        void add(const AnyOperand& op, bool fp16, bool typing);
 
        void mul(const AnyOperand& op, bool typing);
        void div(const AnyOperand& op, bool typing);
 
        void neg(bool typing);
 
        TypeCode type() const;
        int depth() const;
        int memsize() const;
        int sizeInBytes() const;
        void* representation();
 
        template<class T>
        T real() const
        {
            T rv;
            switch (m_type)
            {
            case REAL:
                rv = m_evaluation.r;
                break;
            case INTEGER:
                if (m_signed)
                {
                    rv = double(m_evaluation.s);
                }
                else
                {
                    rv = double(m_evaluation.u);
                }
                break;
            default:
                rv = 0.0;
                break;
            };
            return rv;
        }
 
        template<class T>
        T integer() const
        {
            T rv = T(m_evaluation.s);
            if (m_type == REAL)
            {
                rv = T(m_evaluation.r);
            }
            return rv;
        }
 
        void* pointer() const;
 
    private:
 
        uint64_t masked_unsigned() const;
 
        void typeUpdate(const AnyOperand& op, bool blockToPointer);
 
        int m_depth = 0;
        bool m_signed = false;
        TypeCode m_type = WRONG;
        int m_memsize = 0;
 
        union
        {
            uint64_t u;
            int64_t  s;
            double   r;
            void*    p;
        } m_evaluation, m_representation;
    };
 
} // namespace detail
} // namespace nvneural
 
#endif // !NVNEURAL_SCRIPTENGINEANYOP_H