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Diffstat (limited to 'ARMeilleure/Common/BitUtils.cs')
| -rw-r--r-- | ARMeilleure/Common/BitUtils.cs | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/ARMeilleure/Common/BitUtils.cs b/ARMeilleure/Common/BitUtils.cs deleted file mode 100644 index e7697ff3..00000000 --- a/ARMeilleure/Common/BitUtils.cs +++ /dev/null @@ -1,57 +0,0 @@ -using System; -using System.Numerics; - -namespace ARMeilleure.Common -{ - static class BitUtils - { - private static ReadOnlySpan<sbyte> HbsNibbleLut => new sbyte[] { -1, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3 }; - - public static long FillWithOnes(int bits) - { - return bits == 64 ? -1L : (1L << bits) - 1; - } - - public static int HighestBitSet(int value) - { - return 31 - BitOperations.LeadingZeroCount((uint)value); - } - - public static int HighestBitSetNibble(int value) - { - return HbsNibbleLut[value]; - } - - public static long Replicate(long bits, int size) - { - long output = 0; - - for (int bit = 0; bit < 64; bit += size) - { - output |= bits << bit; - } - - return output; - } - - public static int RotateRight(int bits, int shift, int size) - { - return (int)RotateRight((uint)bits, shift, size); - } - - public static uint RotateRight(uint bits, int shift, int size) - { - return (bits >> shift) | (bits << (size - shift)); - } - - public static long RotateRight(long bits, int shift, int size) - { - return (long)RotateRight((ulong)bits, shift, size); - } - - public static ulong RotateRight(ulong bits, int shift, int size) - { - return (bits >> shift) | (bits << (size - shift)); - } - } -} |
