613 lines
24 KiB
C#
613 lines
24 KiB
C#
using ARMeilleure;
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using ARMeilleure.State;
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using ARMeilleure.Translation;
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using NUnit.Framework;
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using Ryujinx.Cpu.Jit;
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using Ryujinx.Memory;
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using Ryujinx.Tests.Unicorn;
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using System;
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using MemoryPermission = Ryujinx.Tests.Unicorn.MemoryPermission;
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namespace Ryujinx.Tests.Cpu
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{
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[TestFixture]
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public class CpuTest
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{
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protected const ulong Size = 0x1000;
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protected const ulong CodeBaseAddress = 0x1000;
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protected const ulong DataBaseAddress = CodeBaseAddress + Size;
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private static bool Ignore_FpcrFz = false;
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private static bool Ignore_FpcrDn = false;
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private static bool IgnoreAllExcept_FpsrQc = false;
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private ulong _currAddress;
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private MemoryBlock _ram;
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private MemoryManager _memory;
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private ExecutionContext _context;
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private CpuContext _cpuContext;
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private static bool _unicornAvailable;
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private UnicornAArch64 _unicornEmu;
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private bool _usingMemory;
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static CpuTest()
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{
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_unicornAvailable = UnicornAArch64.IsAvailable();
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if (!_unicornAvailable)
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{
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Console.WriteLine("WARNING: Could not find Unicorn.");
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}
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}
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[SetUp]
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public void Setup()
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{
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_currAddress = CodeBaseAddress;
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_ram = new MemoryBlock(Size * 2);
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_memory = new MemoryManager(_ram, 1ul << 16);
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_memory.IncrementReferenceCount();
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_memory.Map(CodeBaseAddress, 0, Size * 2);
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_context = CpuContext.CreateExecutionContext();
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Translator.IsReadyForTranslation.Set();
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_cpuContext = new CpuContext(_memory, for64Bit: true);
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// Prevent registering LCQ functions in the FunctionTable to avoid initializing and populating the table,
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// which improves test durations.
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Optimizations.AllowLcqInFunctionTable = false;
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Optimizations.UseUnmanagedDispatchLoop = false;
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if (_unicornAvailable)
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{
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_unicornEmu = new UnicornAArch64();
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_unicornEmu.MemoryMap(CodeBaseAddress, Size, MemoryPermission.READ | MemoryPermission.EXEC);
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_unicornEmu.MemoryMap(DataBaseAddress, Size, MemoryPermission.READ | MemoryPermission.WRITE);
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_unicornEmu.PC = CodeBaseAddress;
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}
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}
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[TearDown]
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public void Teardown()
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{
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if (_unicornAvailable)
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{
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_unicornEmu.Dispose();
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_unicornEmu = null;
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}
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_memory.DecrementReferenceCount();
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_context.Dispose();
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_ram.Dispose();
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_memory = null;
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_context = null;
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_cpuContext = null;
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_unicornEmu = null;
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_usingMemory = false;
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}
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protected void Reset()
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{
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Teardown();
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Setup();
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}
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protected void Opcode(uint opcode)
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{
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_memory.Write(_currAddress, opcode);
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if (_unicornAvailable)
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{
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_unicornEmu.MemoryWrite32(_currAddress, opcode);
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}
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_currAddress += 4;
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}
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protected ExecutionContext GetContext() => _context;
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protected void SetContext(ulong x0 = 0,
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ulong x1 = 0,
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ulong x2 = 0,
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ulong x3 = 0,
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ulong x31 = 0,
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V128 v0 = default,
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V128 v1 = default,
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V128 v2 = default,
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V128 v3 = default,
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V128 v4 = default,
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V128 v5 = default,
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V128 v30 = default,
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V128 v31 = default,
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bool overflow = false,
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bool carry = false,
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bool zero = false,
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bool negative = false,
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int fpcr = 0,
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int fpsr = 0)
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{
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_context.SetX(0, x0);
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_context.SetX(1, x1);
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_context.SetX(2, x2);
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_context.SetX(3, x3);
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_context.SetX(31, x31);
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_context.SetV(0, v0);
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_context.SetV(1, v1);
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_context.SetV(2, v2);
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_context.SetV(3, v3);
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_context.SetV(4, v4);
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_context.SetV(5, v5);
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_context.SetV(30, v30);
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_context.SetV(31, v31);
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_context.SetPstateFlag(PState.VFlag, overflow);
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_context.SetPstateFlag(PState.CFlag, carry);
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_context.SetPstateFlag(PState.ZFlag, zero);
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_context.SetPstateFlag(PState.NFlag, negative);
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_context.Fpcr = (FPCR)fpcr;
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_context.Fpsr = (FPSR)fpsr;
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if (_unicornAvailable)
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{
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_unicornEmu.X[0] = x0;
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_unicornEmu.X[1] = x1;
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_unicornEmu.X[2] = x2;
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_unicornEmu.X[3] = x3;
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_unicornEmu.SP = x31;
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_unicornEmu.Q[0] = V128ToSimdValue(v0);
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_unicornEmu.Q[1] = V128ToSimdValue(v1);
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_unicornEmu.Q[2] = V128ToSimdValue(v2);
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_unicornEmu.Q[3] = V128ToSimdValue(v3);
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_unicornEmu.Q[4] = V128ToSimdValue(v4);
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_unicornEmu.Q[5] = V128ToSimdValue(v5);
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_unicornEmu.Q[30] = V128ToSimdValue(v30);
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_unicornEmu.Q[31] = V128ToSimdValue(v31);
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_unicornEmu.OverflowFlag = overflow;
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_unicornEmu.CarryFlag = carry;
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_unicornEmu.ZeroFlag = zero;
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_unicornEmu.NegativeFlag = negative;
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_unicornEmu.Fpcr = fpcr;
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_unicornEmu.Fpsr = fpsr;
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}
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}
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protected void ExecuteOpcodes(bool runUnicorn = true)
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{
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_cpuContext.Execute(_context, CodeBaseAddress);
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if (_unicornAvailable && runUnicorn)
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{
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_unicornEmu.RunForCount((_currAddress - CodeBaseAddress - 4) / 4);
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}
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}
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protected ExecutionContext SingleOpcode(uint opcode,
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ulong x0 = 0,
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ulong x1 = 0,
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ulong x2 = 0,
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ulong x3 = 0,
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ulong x31 = 0,
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V128 v0 = default,
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V128 v1 = default,
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V128 v2 = default,
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V128 v3 = default,
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V128 v4 = default,
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V128 v5 = default,
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V128 v30 = default,
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V128 v31 = default,
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bool overflow = false,
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bool carry = false,
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bool zero = false,
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bool negative = false,
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int fpcr = 0,
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int fpsr = 0,
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bool runUnicorn = true)
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{
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if (Ignore_FpcrFz)
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{
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fpcr &= ~(1 << (int)Fpcr.Fz);
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}
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if (Ignore_FpcrDn)
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{
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fpcr &= ~(1 << (int)Fpcr.Dn);
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}
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Opcode(opcode);
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Opcode(0xD65F03C0); // RET
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SetContext(x0, x1, x2, x3, x31, v0, v1, v2, v3, v4, v5, v30, v31, overflow, carry, zero, negative, fpcr, fpsr);
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ExecuteOpcodes(runUnicorn);
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return GetContext();
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}
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protected void SetWorkingMemory(ulong offset, byte[] data)
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{
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_memory.Write(DataBaseAddress + offset, data);
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if (_unicornAvailable)
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{
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_unicornEmu.MemoryWrite(DataBaseAddress + offset, data);
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}
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_usingMemory = true; // When true, CompareAgainstUnicorn checks the working memory for equality too.
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}
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protected void SetWorkingMemory(ulong offset, byte data)
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{
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_memory.Write(DataBaseAddress + offset, data);
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if (_unicornAvailable)
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{
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_unicornEmu.MemoryWrite8(DataBaseAddress + offset, data);
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}
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_usingMemory = true; // When true, CompareAgainstUnicorn checks the working memory for equality too.
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}
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/// <summary>Rounding Mode control field.</summary>
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public enum RMode
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{
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/// <summary>Round to Nearest mode.</summary>
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Rn,
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/// <summary>Round towards Plus Infinity mode.</summary>
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Rp,
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/// <summary>Round towards Minus Infinity mode.</summary>
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Rm,
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/// <summary>Round towards Zero mode.</summary>
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Rz
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};
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/// <summary>Floating-point Control Register.</summary>
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protected enum Fpcr
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{
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/// <summary>Rounding Mode control field.</summary>
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RMode = 22,
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/// <summary>Flush-to-zero mode control bit.</summary>
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Fz = 24,
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/// <summary>Default NaN mode control bit.</summary>
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Dn = 25,
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/// <summary>Alternative half-precision control bit.</summary>
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Ahp = 26
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}
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/// <summary>Floating-point Status Register.</summary>
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[Flags] protected enum Fpsr
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{
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None = 0,
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/// <summary>Invalid Operation cumulative floating-point exception bit.</summary>
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Ioc = 1 << 0,
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/// <summary>Divide by Zero cumulative floating-point exception bit.</summary>
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Dzc = 1 << 1,
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/// <summary>Overflow cumulative floating-point exception bit.</summary>
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Ofc = 1 << 2,
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/// <summary>Underflow cumulative floating-point exception bit.</summary>
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Ufc = 1 << 3,
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/// <summary>Inexact cumulative floating-point exception bit.</summary>
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Ixc = 1 << 4,
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/// <summary>Input Denormal cumulative floating-point exception bit.</summary>
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Idc = 1 << 7,
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/// <summary>Cumulative saturation bit.</summary>
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Qc = 1 << 27
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}
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[Flags] protected enum FpSkips
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{
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None = 0,
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IfNaNS = 1,
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IfNaND = 2,
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IfUnderflow = 4,
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IfOverflow = 8
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}
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protected enum FpTolerances
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{
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None,
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UpToOneUlpsS,
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UpToOneUlpsD
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}
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protected void CompareAgainstUnicorn(
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Fpsr fpsrMask = Fpsr.None,
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FpSkips fpSkips = FpSkips.None,
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FpTolerances fpTolerances = FpTolerances.None)
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{
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if (!_unicornAvailable)
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{
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return;
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}
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if (IgnoreAllExcept_FpsrQc)
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{
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fpsrMask &= Fpsr.Qc;
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}
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if (fpSkips != FpSkips.None)
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{
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ManageFpSkips(fpSkips);
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}
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Assert.That(_context.GetX(0), Is.EqualTo(_unicornEmu.X[0]), "X0");
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Assert.That(_context.GetX(1), Is.EqualTo(_unicornEmu.X[1]), "X1");
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Assert.That(_context.GetX(2), Is.EqualTo(_unicornEmu.X[2]), "X2");
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Assert.That(_context.GetX(3), Is.EqualTo(_unicornEmu.X[3]), "X3");
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Assert.That(_context.GetX(4), Is.EqualTo(_unicornEmu.X[4]));
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Assert.That(_context.GetX(5), Is.EqualTo(_unicornEmu.X[5]));
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Assert.That(_context.GetX(6), Is.EqualTo(_unicornEmu.X[6]));
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Assert.That(_context.GetX(7), Is.EqualTo(_unicornEmu.X[7]));
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Assert.That(_context.GetX(8), Is.EqualTo(_unicornEmu.X[8]));
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Assert.That(_context.GetX(9), Is.EqualTo(_unicornEmu.X[9]));
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Assert.That(_context.GetX(10), Is.EqualTo(_unicornEmu.X[10]));
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Assert.That(_context.GetX(11), Is.EqualTo(_unicornEmu.X[11]));
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Assert.That(_context.GetX(12), Is.EqualTo(_unicornEmu.X[12]));
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Assert.That(_context.GetX(13), Is.EqualTo(_unicornEmu.X[13]));
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Assert.That(_context.GetX(14), Is.EqualTo(_unicornEmu.X[14]));
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Assert.That(_context.GetX(15), Is.EqualTo(_unicornEmu.X[15]));
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Assert.That(_context.GetX(16), Is.EqualTo(_unicornEmu.X[16]));
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Assert.That(_context.GetX(17), Is.EqualTo(_unicornEmu.X[17]));
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Assert.That(_context.GetX(18), Is.EqualTo(_unicornEmu.X[18]));
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Assert.That(_context.GetX(19), Is.EqualTo(_unicornEmu.X[19]));
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Assert.That(_context.GetX(20), Is.EqualTo(_unicornEmu.X[20]));
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Assert.That(_context.GetX(21), Is.EqualTo(_unicornEmu.X[21]));
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Assert.That(_context.GetX(22), Is.EqualTo(_unicornEmu.X[22]));
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Assert.That(_context.GetX(23), Is.EqualTo(_unicornEmu.X[23]));
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Assert.That(_context.GetX(24), Is.EqualTo(_unicornEmu.X[24]));
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Assert.That(_context.GetX(25), Is.EqualTo(_unicornEmu.X[25]));
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Assert.That(_context.GetX(26), Is.EqualTo(_unicornEmu.X[26]));
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Assert.That(_context.GetX(27), Is.EqualTo(_unicornEmu.X[27]));
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Assert.That(_context.GetX(28), Is.EqualTo(_unicornEmu.X[28]));
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Assert.That(_context.GetX(29), Is.EqualTo(_unicornEmu.X[29]));
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Assert.That(_context.GetX(30), Is.EqualTo(_unicornEmu.X[30]));
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Assert.That(_context.GetX(31), Is.EqualTo(_unicornEmu.SP), "X31");
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if (fpTolerances == FpTolerances.None)
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{
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Assert.That(V128ToSimdValue(_context.GetV(0)), Is.EqualTo(_unicornEmu.Q[0]), "V0");
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}
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else
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{
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ManageFpTolerances(fpTolerances);
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}
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Assert.That(V128ToSimdValue(_context.GetV(1)), Is.EqualTo(_unicornEmu.Q[1]), "V1");
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Assert.That(V128ToSimdValue(_context.GetV(2)), Is.EqualTo(_unicornEmu.Q[2]), "V2");
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Assert.That(V128ToSimdValue(_context.GetV(3)), Is.EqualTo(_unicornEmu.Q[3]), "V3");
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Assert.That(V128ToSimdValue(_context.GetV(4)), Is.EqualTo(_unicornEmu.Q[4]), "V4");
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Assert.That(V128ToSimdValue(_context.GetV(5)), Is.EqualTo(_unicornEmu.Q[5]), "V5");
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Assert.That(V128ToSimdValue(_context.GetV(6)), Is.EqualTo(_unicornEmu.Q[6]));
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Assert.That(V128ToSimdValue(_context.GetV(7)), Is.EqualTo(_unicornEmu.Q[7]));
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Assert.That(V128ToSimdValue(_context.GetV(8)), Is.EqualTo(_unicornEmu.Q[8]));
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Assert.That(V128ToSimdValue(_context.GetV(9)), Is.EqualTo(_unicornEmu.Q[9]));
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Assert.That(V128ToSimdValue(_context.GetV(10)), Is.EqualTo(_unicornEmu.Q[10]));
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Assert.That(V128ToSimdValue(_context.GetV(11)), Is.EqualTo(_unicornEmu.Q[11]));
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Assert.That(V128ToSimdValue(_context.GetV(12)), Is.EqualTo(_unicornEmu.Q[12]));
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Assert.That(V128ToSimdValue(_context.GetV(13)), Is.EqualTo(_unicornEmu.Q[13]));
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Assert.That(V128ToSimdValue(_context.GetV(14)), Is.EqualTo(_unicornEmu.Q[14]));
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Assert.That(V128ToSimdValue(_context.GetV(15)), Is.EqualTo(_unicornEmu.Q[15]));
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Assert.That(V128ToSimdValue(_context.GetV(16)), Is.EqualTo(_unicornEmu.Q[16]));
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Assert.That(V128ToSimdValue(_context.GetV(17)), Is.EqualTo(_unicornEmu.Q[17]));
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Assert.That(V128ToSimdValue(_context.GetV(18)), Is.EqualTo(_unicornEmu.Q[18]));
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Assert.That(V128ToSimdValue(_context.GetV(19)), Is.EqualTo(_unicornEmu.Q[19]));
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Assert.That(V128ToSimdValue(_context.GetV(20)), Is.EqualTo(_unicornEmu.Q[20]));
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Assert.That(V128ToSimdValue(_context.GetV(21)), Is.EqualTo(_unicornEmu.Q[21]));
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Assert.That(V128ToSimdValue(_context.GetV(22)), Is.EqualTo(_unicornEmu.Q[22]));
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Assert.That(V128ToSimdValue(_context.GetV(23)), Is.EqualTo(_unicornEmu.Q[23]));
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Assert.That(V128ToSimdValue(_context.GetV(24)), Is.EqualTo(_unicornEmu.Q[24]));
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Assert.That(V128ToSimdValue(_context.GetV(25)), Is.EqualTo(_unicornEmu.Q[25]));
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Assert.That(V128ToSimdValue(_context.GetV(26)), Is.EqualTo(_unicornEmu.Q[26]));
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Assert.That(V128ToSimdValue(_context.GetV(27)), Is.EqualTo(_unicornEmu.Q[27]));
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Assert.That(V128ToSimdValue(_context.GetV(28)), Is.EqualTo(_unicornEmu.Q[28]));
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Assert.That(V128ToSimdValue(_context.GetV(29)), Is.EqualTo(_unicornEmu.Q[29]));
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Assert.That(V128ToSimdValue(_context.GetV(30)), Is.EqualTo(_unicornEmu.Q[30]), "V30");
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Assert.That(V128ToSimdValue(_context.GetV(31)), Is.EqualTo(_unicornEmu.Q[31]), "V31");
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Assert.Multiple(() =>
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{
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Assert.That(_context.GetPstateFlag(PState.VFlag), Is.EqualTo(_unicornEmu.OverflowFlag), "VFlag");
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Assert.That(_context.GetPstateFlag(PState.CFlag), Is.EqualTo(_unicornEmu.CarryFlag), "CFlag");
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Assert.That(_context.GetPstateFlag(PState.ZFlag), Is.EqualTo(_unicornEmu.ZeroFlag), "ZFlag");
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Assert.That(_context.GetPstateFlag(PState.NFlag), Is.EqualTo(_unicornEmu.NegativeFlag), "NFlag");
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});
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Assert.That((int)_context.Fpcr, Is.EqualTo(_unicornEmu.Fpcr), "Fpcr");
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Assert.That((int)_context.Fpsr & (int)fpsrMask, Is.EqualTo(_unicornEmu.Fpsr & (int)fpsrMask), "Fpsr");
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if (_usingMemory)
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{
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byte[] mem = _memory.GetSpan(DataBaseAddress, (int)Size).ToArray();
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byte[] unicornMem = _unicornEmu.MemoryRead(DataBaseAddress, Size);
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Assert.That(mem, Is.EqualTo(unicornMem), "Data");
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}
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}
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private void ManageFpSkips(FpSkips fpSkips)
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{
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if (fpSkips.HasFlag(FpSkips.IfNaNS))
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{
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if (float.IsNaN(_unicornEmu.Q[0].AsFloat()))
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{
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Assert.Ignore("NaN test.");
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}
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}
|
|
else if (fpSkips.HasFlag(FpSkips.IfNaND))
|
|
{
|
|
if (double.IsNaN(_unicornEmu.Q[0].AsDouble()))
|
|
{
|
|
Assert.Ignore("NaN test.");
|
|
}
|
|
}
|
|
|
|
if (fpSkips.HasFlag(FpSkips.IfUnderflow))
|
|
{
|
|
if ((_unicornEmu.Fpsr & (int)Fpsr.Ufc) != 0)
|
|
{
|
|
Assert.Ignore("Underflow test.");
|
|
}
|
|
}
|
|
|
|
if (fpSkips.HasFlag(FpSkips.IfOverflow))
|
|
{
|
|
if ((_unicornEmu.Fpsr & (int)Fpsr.Ofc) != 0)
|
|
{
|
|
Assert.Ignore("Overflow test.");
|
|
}
|
|
}
|
|
}
|
|
|
|
private void ManageFpTolerances(FpTolerances fpTolerances)
|
|
{
|
|
bool IsNormalOrSubnormalS(float f) => float.IsNormal(f) || float.IsSubnormal(f);
|
|
bool IsNormalOrSubnormalD(double d) => double.IsNormal(d) || double.IsSubnormal(d);
|
|
|
|
if (!Is.EqualTo(_unicornEmu.Q[0]).ApplyTo(V128ToSimdValue(_context.GetV(0))).IsSuccess)
|
|
{
|
|
if (fpTolerances == FpTolerances.UpToOneUlpsS)
|
|
{
|
|
if (IsNormalOrSubnormalS(_unicornEmu.Q[0].AsFloat()) &&
|
|
IsNormalOrSubnormalS(_context.GetV(0).As<float>()))
|
|
{
|
|
Assert.Multiple(() =>
|
|
{
|
|
Assert.That (_context.GetV(0).Extract<float>(0),
|
|
Is.EqualTo(_unicornEmu.Q[0].GetFloat(0)).Within(1).Ulps, "V0[0]");
|
|
Assert.That (_context.GetV(0).Extract<float>(1),
|
|
Is.EqualTo(_unicornEmu.Q[0].GetFloat(1)).Within(1).Ulps, "V0[1]");
|
|
Assert.That (_context.GetV(0).Extract<float>(2),
|
|
Is.EqualTo(_unicornEmu.Q[0].GetFloat(2)).Within(1).Ulps, "V0[2]");
|
|
Assert.That (_context.GetV(0).Extract<float>(3),
|
|
Is.EqualTo(_unicornEmu.Q[0].GetFloat(3)).Within(1).Ulps, "V0[3]");
|
|
});
|
|
|
|
Console.WriteLine(fpTolerances);
|
|
}
|
|
else
|
|
{
|
|
Assert.That(V128ToSimdValue(_context.GetV(0)), Is.EqualTo(_unicornEmu.Q[0]));
|
|
}
|
|
}
|
|
|
|
if (fpTolerances == FpTolerances.UpToOneUlpsD)
|
|
{
|
|
if (IsNormalOrSubnormalD(_unicornEmu.Q[0].AsDouble()) &&
|
|
IsNormalOrSubnormalD(_context.GetV(0).As<double>()))
|
|
{
|
|
Assert.Multiple(() =>
|
|
{
|
|
Assert.That (_context.GetV(0).Extract<double>(0),
|
|
Is.EqualTo(_unicornEmu.Q[0].GetDouble(0)).Within(1).Ulps, "V0[0]");
|
|
Assert.That (_context.GetV(0).Extract<double>(1),
|
|
Is.EqualTo(_unicornEmu.Q[0].GetDouble(1)).Within(1).Ulps, "V0[1]");
|
|
});
|
|
|
|
Console.WriteLine(fpTolerances);
|
|
}
|
|
else
|
|
{
|
|
Assert.That(V128ToSimdValue(_context.GetV(0)), Is.EqualTo(_unicornEmu.Q[0]));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private static SimdValue V128ToSimdValue(V128 value)
|
|
{
|
|
return new SimdValue(value.Extract<ulong>(0), value.Extract<ulong>(1));
|
|
}
|
|
|
|
protected static V128 MakeVectorScalar(float value) => new V128(value);
|
|
protected static V128 MakeVectorScalar(double value) => new V128(value);
|
|
|
|
protected static V128 MakeVectorE0(ulong e0) => new V128(e0, 0);
|
|
protected static V128 MakeVectorE1(ulong e1) => new V128(0, e1);
|
|
|
|
protected static V128 MakeVectorE0E1(ulong e0, ulong e1) => new V128(e0, e1);
|
|
|
|
protected static ulong GetVectorE0(V128 vector) => vector.Extract<ulong>(0);
|
|
protected static ulong GetVectorE1(V128 vector) => vector.Extract<ulong>(1);
|
|
|
|
protected static ushort GenNormalH()
|
|
{
|
|
uint rnd;
|
|
|
|
do rnd = TestContext.CurrentContext.Random.NextUShort();
|
|
while (( rnd & 0x7C00u) == 0u ||
|
|
(~rnd & 0x7C00u) == 0u);
|
|
|
|
return (ushort)rnd;
|
|
}
|
|
|
|
protected static ushort GenSubnormalH()
|
|
{
|
|
uint rnd;
|
|
|
|
do rnd = TestContext.CurrentContext.Random.NextUShort();
|
|
while ((rnd & 0x03FFu) == 0u);
|
|
|
|
return (ushort)(rnd & 0x83FFu);
|
|
}
|
|
|
|
protected static uint GenNormalS()
|
|
{
|
|
uint rnd;
|
|
|
|
do rnd = TestContext.CurrentContext.Random.NextUInt();
|
|
while (( rnd & 0x7F800000u) == 0u ||
|
|
(~rnd & 0x7F800000u) == 0u);
|
|
|
|
return rnd;
|
|
}
|
|
|
|
protected static uint GenSubnormalS()
|
|
{
|
|
uint rnd;
|
|
|
|
do rnd = TestContext.CurrentContext.Random.NextUInt();
|
|
while ((rnd & 0x007FFFFFu) == 0u);
|
|
|
|
return rnd & 0x807FFFFFu;
|
|
}
|
|
|
|
protected static ulong GenNormalD()
|
|
{
|
|
ulong rnd;
|
|
|
|
do rnd = TestContext.CurrentContext.Random.NextULong();
|
|
while (( rnd & 0x7FF0000000000000ul) == 0ul ||
|
|
(~rnd & 0x7FF0000000000000ul) == 0ul);
|
|
|
|
return rnd;
|
|
}
|
|
|
|
protected static ulong GenSubnormalD()
|
|
{
|
|
ulong rnd;
|
|
|
|
do rnd = TestContext.CurrentContext.Random.NextULong();
|
|
while ((rnd & 0x000FFFFFFFFFFFFFul) == 0ul);
|
|
|
|
return rnd & 0x800FFFFFFFFFFFFFul;
|
|
}
|
|
}
|
|
}
|