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Fix the rotate right method on ABitUtils (#486)

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gdkchan 2018-10-28 22:18:58 -03:00 committed by GitHub
parent c1b7340023
commit 5b13ee655c
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1 changed files with 3 additions and 15 deletions
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18
ChocolArm64/ABitUtils.cs
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@ -2,18 +2,6 @@ namespace ChocolArm64
{ {
static class ABitUtils static class ABitUtils
{ {
public static int CountBitsSet(long Value)
{
int Count = 0;
for (int Bit = 0; Bit < 64; Bit++)
{
Count += (int)(Value >> Bit) & 1;
}
return Count;
}
public static int HighestBitSet32(int Value) public static int HighestBitSet32(int Value)
{ {
for (int Bit = 31; Bit >= 0; Bit--) for (int Bit = 31; Bit >= 0; Bit--)
@ -50,12 +38,12 @@ namespace ChocolArm64
public static long RotateRight(long Bits, int Shift, int Size) public static long RotateRight(long Bits, int Shift, int Size)
{ {
return (Bits >> Shift) | (Bits << (Size - Shift)); return (long)RotateRight((ulong)Bits, Shift, Size);
} }
public static bool IsPow2(int Value) public static ulong RotateRight(ulong Bits, int Shift, int Size)
{ {
return Value != 0 && (Value & (Value - 1)) == 0; return (Bits >> Shift) | (Bits << (Size - Shift));
} }
} }
} }