diff options
Diffstat (limited to 'Ryujinx.Common/BitUtils.cs')
-rw-r--r-- | Ryujinx.Common/BitUtils.cs | 90 |
1 files changed, 45 insertions, 45 deletions
diff --git a/Ryujinx.Common/BitUtils.cs b/Ryujinx.Common/BitUtils.cs index 5c858029..135b397d 100644 --- a/Ryujinx.Common/BitUtils.cs +++ b/Ryujinx.Common/BitUtils.cs @@ -2,103 +2,103 @@ namespace Ryujinx.Common { public static class BitUtils { - public static int AlignUp(int Value, int Size) + private static readonly byte[] ClzNibbleTbl = { 4, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 }; + + public static int AlignUp(int value, int size) { - return (Value + (Size - 1)) & -Size; + return (value + (size - 1)) & -size; } - public static ulong AlignUp(ulong Value, int Size) + public static ulong AlignUp(ulong value, int size) { - return (ulong)AlignUp((long)Value, Size); + return (ulong)AlignUp((long)value, size); } - public static long AlignUp(long Value, int Size) + public static long AlignUp(long value, int size) { - return (Value + (Size - 1)) & -(long)Size; + return (value + (size - 1)) & -(long)size; } - public static int AlignDown(int Value, int Size) + public static int AlignDown(int value, int size) { - return Value & -Size; + return value & -size; } - public static ulong AlignDown(ulong Value, int Size) + public static ulong AlignDown(ulong value, int size) { - return (ulong)AlignDown((long)Value, Size); + return (ulong)AlignDown((long)value, size); } - public static long AlignDown(long Value, int Size) + public static long AlignDown(long value, int size) { - return Value & -(long)Size; + return value & -(long)size; } - public static ulong DivRoundUp(ulong Value, uint Dividend) + public static ulong DivRoundUp(ulong value, uint dividend) { - return (Value + Dividend - 1) / Dividend; + return (value + dividend - 1) / dividend; } - public static long DivRoundUp(long Value, int Dividend) + public static long DivRoundUp(long value, int dividend) { - return (Value + Dividend - 1) / Dividend; + return (value + dividend - 1) / dividend; } - public static bool IsPowerOfTwo32(int Value) + public static bool IsPowerOfTwo32(int value) { - return Value != 0 && (Value & (Value - 1)) == 0; + return value != 0 && (value & (value - 1)) == 0; } - public static bool IsPowerOfTwo64(long Value) + public static bool IsPowerOfTwo64(long value) { - return Value != 0 && (Value & (Value - 1)) == 0; + return value != 0 && (value & (value - 1)) == 0; } - public static int CountLeadingZeros32(int Value) + public static int CountLeadingZeros32(int value) { - return (int)CountLeadingZeros((ulong)Value, 32); + return (int)CountLeadingZeros((ulong)value, 32); } - public static int CountLeadingZeros64(long Value) + public static int CountLeadingZeros64(long value) { - return (int)CountLeadingZeros((ulong)Value, 64); + return (int)CountLeadingZeros((ulong)value, 64); } - private static readonly byte[] ClzNibbleTbl = { 4, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 }; - - private static ulong CountLeadingZeros(ulong Value, int Size) // Size is 8, 16, 32 or 64 (SIMD&FP or Base Inst.). + private static ulong CountLeadingZeros(ulong value, int size) { - if (Value == 0ul) + if (value == 0ul) { - return (ulong)Size; + return (ulong)size; } - int NibbleIdx = Size; - int PreCount, Count = 0; + int nibbleIdx = size; + int preCount, count = 0; do { - NibbleIdx -= 4; - PreCount = ClzNibbleTbl[(Value >> NibbleIdx) & 0b1111]; - Count += PreCount; + nibbleIdx -= 4; + preCount = ClzNibbleTbl[(value >> nibbleIdx) & 0b1111]; + count += preCount; } - while (PreCount == 4); + while (preCount == 4); - return (ulong)Count; + return (ulong)count; } - public static long ReverseBits64(long Value) + public static long ReverseBits64(long value) { - return (long)ReverseBits64((ulong)Value); + return (long)ReverseBits64((ulong)value); } - private static ulong ReverseBits64(ulong Value) + private static ulong ReverseBits64(ulong value) { - Value = ((Value & 0xaaaaaaaaaaaaaaaa) >> 1 ) | ((Value & 0x5555555555555555) << 1 ); - Value = ((Value & 0xcccccccccccccccc) >> 2 ) | ((Value & 0x3333333333333333) << 2 ); - Value = ((Value & 0xf0f0f0f0f0f0f0f0) >> 4 ) | ((Value & 0x0f0f0f0f0f0f0f0f) << 4 ); - Value = ((Value & 0xff00ff00ff00ff00) >> 8 ) | ((Value & 0x00ff00ff00ff00ff) << 8 ); - Value = ((Value & 0xffff0000ffff0000) >> 16) | ((Value & 0x0000ffff0000ffff) << 16); + value = ((value & 0xaaaaaaaaaaaaaaaa) >> 1 ) | ((value & 0x5555555555555555) << 1 ); + value = ((value & 0xcccccccccccccccc) >> 2 ) | ((value & 0x3333333333333333) << 2 ); + value = ((value & 0xf0f0f0f0f0f0f0f0) >> 4 ) | ((value & 0x0f0f0f0f0f0f0f0f) << 4 ); + value = ((value & 0xff00ff00ff00ff00) >> 8 ) | ((value & 0x00ff00ff00ff00ff) << 8 ); + value = ((value & 0xffff0000ffff0000) >> 16) | ((value & 0x0000ffff0000ffff) << 16); - return (Value >> 32) | (Value << 32); + return (value >> 32) | (value << 32); } } }
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