diff options
Diffstat (limited to 'Ryujinx.Common/Utilities/BitUtils.cs')
| -rw-r--r-- | Ryujinx.Common/Utilities/BitUtils.cs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/Ryujinx.Common/Utilities/BitUtils.cs b/Ryujinx.Common/Utilities/BitUtils.cs index 135b397d..b6fba4fb 100644 --- a/Ryujinx.Common/Utilities/BitUtils.cs +++ b/Ryujinx.Common/Utilities/BitUtils.cs @@ -34,6 +34,11 @@ namespace Ryujinx.Common return value & -(long)size; } + public static int DivRoundUp(int value, int dividend) + { + return (value + dividend - 1) / dividend; + } + public static ulong DivRoundUp(ulong value, uint dividend) { return (value + dividend - 1) / dividend; @@ -44,6 +49,24 @@ namespace Ryujinx.Common return (value + dividend - 1) / dividend; } + public static int Pow2RoundUp(int value) + { + value--; + + value |= (value >> 1); + value |= (value >> 2); + value |= (value >> 4); + value |= (value >> 8); + value |= (value >> 16); + + return ++value; + } + + public static int Pow2RoundDown(int value) + { + return IsPowerOfTwo32(value) ? value : Pow2RoundUp(value) >> 1; + } + public static bool IsPowerOfTwo32(int value) { return value != 0 && (value & (value - 1)) == 0; @@ -85,6 +108,18 @@ namespace Ryujinx.Common return (ulong)count; } + public static int CountTrailingZeros32(int value) + { + int count = 0; + + while (((value >> count) & 1) == 0) + { + count++; + } + + return count; + } + public static long ReverseBits64(long value) { return (long)ReverseBits64((ulong)value); |