Data.Bits.Pdep

Documentation

class Pdep a where

Bitwise parallel deposit. Deposits bits from the source at the locations described by the mask.

Copies lower order bits from src to mask 1-bit locations in the return value; mask 0-bit locations in the return value will be cleared.

>>> pdep 1 1 :: Word64
1

Methods

pdep

Arguments

:: a

the bitmap from which bits will be extracted

-> a

the bitmap selecting the bit locations that are to be deposited to

-> a

the bitmap containing the deposited bits with other bits bits cleared

Instances

Pdep Word

Defined in Data.Bits.Pdep

Methods

pdep :: Word -> Word -> Word

Pdep Word8

Defined in Data.Bits.Pdep

Methods

pdep :: Word8 -> Word8 -> Word8

Pdep Word16

Defined in Data.Bits.Pdep

Methods

pdep :: Word16 -> Word16 -> Word16

Pdep Word32

Defined in Data.Bits.Pdep

Methods

pdep :: Word32 -> Word32 -> Word32

Pdep Word64

Defined in Data.Bits.Pdep

Methods

pdep :: Word64 -> Word64 -> Word64

fastPdepEnabled :: Bool

Runtime flag indicating whether the pdep function is using the high-performance. BMI2 instruction set. A value of False indicates that pdep is emulated.

Actual performance when using the BMI2 instruction set will vary according to CPU model. For example Intel CPUs currently outperform AMD CPUs in this area.