Line data    Source code

       1              : /**
       2              :  * Copyright (c) 2025 Huawei Technologies Co., Ltd.
       3              :  * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
       4              :  * CANN Open Software License Agreement Version 2.0 (the "License").
       5              :  * Please refer to the License for details. You may not use this file except in compliance with the License.
       6              :  * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
       7              :  * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
       8              :  * See LICENSE in the root of the software repository for the full text of the License.
       9              :  */
      10              : 
      11              : #ifndef HIFLOAT_H
      12              : #define HIFLOAT_H
      13              : 
      14              : #include <cmath>
      15              : #include <string>
      16              : #include <cstdint>
      17              : 
      18              : namespace Adx {
      19              : constexpr int32_t BASE_NUM = 2;
      20              : 
      21              : class HiFloat8 {
      22              : public:
      23            4 :     explicit HiFloat8(uint8_t v = 0) : val(v) {}
      24              :     int32_t GetExponent(const std::string& binary) const;
      25              :     float GetMantissaField(const std::string& binary) const;
      26              :     float GetValue() const;
      27              : 
      28              : private:
      29              :     uint8_t val;
      30              : };
      31              : 
      32              : class FpaEbMc {
      33              : public:
      34            7 :     explicit FpaEbMc(uint8_t v = 0) : val(v) {}
      35              :     float Decode(
      36              :         const std::string& bitString, const std::string& exponentBit, const std::string& mantissaBit,
      37              :         const uint32_t exponentBitNum) const;
      38              : 
      39              : protected:
      40              :     uint8_t val;
      41              : };
      42              : 
      43              : class Fp8E5M2 : public FpaEbMc {
      44              : public:
      45            4 :     explicit Fp8E5M2(uint8_t v = 0) : FpaEbMc(v) {}
      46              :     float GetValue() const;
      47              : };
      48              : 
      49              : class Fp8E4M3 : public FpaEbMc {
      50              : public:
      51            3 :     explicit Fp8E4M3(uint8_t v = 0) : FpaEbMc(v) {}
      52              :     float GetValue() const;
      53              : };
      54              : 
      55              : class Fp8E8M0 {
      56              : public:
      57            2 :     explicit Fp8E8M0(uint8_t v = 0) : val(v) {}
      58              :     float GetValue() const;
      59              : 
      60              : private:
      61              :     uint8_t val;
      62              : };
      63              : 
      64              : }; // namespace Adx
      65              : 
      66              : #endif