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40 lines
1.2 KiB
C#
40 lines
1.2 KiB
C#
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using System.Runtime.CompilerServices;
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namespace Ryujinx.Graphics.Vic.Types
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{
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static class BitfieldExtensions
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static bool Extract(this int value, int lsb)
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{
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return ((value >> (lsb & 0x1f)) & 1) != 0;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static int Extract(this int value, int lsb, int length)
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{
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return (value >> (lsb & 0x1f)) & (int)(uint.MaxValue >> (32 - length));
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static bool Extract(this long value, int lsb)
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{
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return ((int)(value >> (lsb & 0x3f)) & 1) != 0;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static int Extract(this long value, int lsb, int length)
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{
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return (int)(value >> (lsb & 0x3f)) & (int)(uint.MaxValue >> (32 - length));
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static int ExtractSx(this long value, int lsb, int length)
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{
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int shift = lsb & 0x3f;
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return (int)((value << (64 - (shift + length))) >> (64 - length));
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}
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}
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}
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