85 lines
2.3 KiB
C#
85 lines
2.3 KiB
C#
/*
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Copyright 2014 Alex Dyachenko
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This file is part of the MPIR Library.
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The MPIR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 3 of the License, or (at
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your option) any later version.
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The MPIR Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the MPIR Library. If not, see http://www.gnu.org/licenses/.
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*/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Reflection;
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namespace MPIR.Tests
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{
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internal static class Accessors
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{
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private static readonly ConstructorInfo _intPtrConstructor;
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private static readonly FieldInfo _getValue;
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static Accessors()
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{
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_getValue = GetAccessor("_value");
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_intPtrConstructor = typeof(IntPtr).GetConstructor(new[] { Type.GetType("System.Void*") });
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}
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private static FieldInfo GetAccessor(string name)
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{
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return typeof(HugeInt).GetField(name, BindingFlags.NonPublic | BindingFlags.Instance);
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}
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public static int NumberOfLimbsAllocated(this HugeInt x)
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{
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if (x._value() == IntPtr.Zero)
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return 0;
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unsafe
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{
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return ((int*)x._value().ToPointer())[0];
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}
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}
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public static int NumberOfLimbsUsed(this HugeInt x)
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{
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if (x._value() == IntPtr.Zero)
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return 0;
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unsafe
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{
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return ((int*)x._value().ToPointer())[1];
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}
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}
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public static IntPtr Limbs(this HugeInt x)
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{
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if (x._value() == IntPtr.Zero)
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return IntPtr.Zero;
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unsafe
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{
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return new IntPtr(((void**)x._value().ToPointer())[1]);
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}
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}
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public static IntPtr _value(this HugeInt x)
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{
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return (IntPtr)_intPtrConstructor.Invoke(new object[] { _getValue.GetValue(x) });
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}
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}
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}
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