text: //===-- Bit patterns of common floating point numbers -----------*- C++ -*-===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  
  #ifndef LLVM_LIBC_UTILS_FPUTIL_BIT_PATTERNS_H
  #define LLVM_LIBC_UTILS_FPUTIL_BIT_PATTERNS_H
  
  #include "FloatProperties.h"
  
  namespace __llvm_libc {
  namespace fputil {
  
  template <typename T> struct BitPatterns {};
  
  template <> struct BitPatterns<float> {
    using BitsType = FloatProperties<float>::BitsType;
  
    static constexpr BitsType inf = 0x7f800000U;
    static constexpr BitsType negInf = 0xff800000U;
  
    static constexpr BitsType zero = 0x0;
    static constexpr BitsType negZero = 0x80000000U;
  
    static constexpr BitsType one = 0x3f800000U;
  
    // Examples of quiet NAN.
    static constexpr BitsType aQuietNaN = 0x7fc00000U;
    static constexpr BitsType aNegativeQuietNaN = 0xffc00000U;
  
    // Examples of signalling NAN.
    static constexpr BitsType aSignallingNaN = 0x7f800001U;
    static constexpr BitsType aNegativeSignallingNaN = 0xff800001U;
  };
  
  template <> struct BitPatterns<double> {
    using BitsType = FloatProperties<double>::BitsType;
  
    static constexpr BitsType inf = 0x7ff0000000000000ULL;
    static constexpr BitsType negInf = 0xfff0000000000000ULL;
  
    static constexpr BitsType zero = 0x0ULL;
    static constexpr BitsType negZero = 0x8000000000000000ULL;
  
    static constexpr BitsType one = 0x3FF0000000000000ULL;
  
    // Examples of quiet NAN.
    static constexpr BitsType aQuietNaN = 0x7ff8000000000000ULL;
    static constexpr BitsType aNegativeQuietNaN = 0xfff8000000000000ULL;
  
    // Examples of signalling NAN.
    static constexpr BitsType aSignallingNaN = 0x7ff0000000000001ULL;
    static constexpr BitsType aNegativeSignallingNaN = 0xfff0000000000001ULL;
  };
  
  } // namespace fputil
  } // namespace __llvm_libc
  
  #endif // LLVM_LIBC_UTILS_FPUTIL_BIT_PATTERNS_H
  