Module `core.bitop`

This module contains a collection of bit-level operations.

Functions

Name	Description
`bitswap`	Reverses the order of bits in a 32-bit integer.
`bsf`	Scans the bits in `v` starting with bit 0, looking for the first set bit.
`bsr`	Scans the bits in `v` from the most significant bit to the least significant bit, looking for the first set bit.
`bswap`	Swaps bytes in a 4 byte uint end-to-end, i.e. byte 0 becomes byte 3, byte 1 becomes byte 2, byte 2 becomes byte 1, byte 3 becomes byte 0.
`bt`	Tests the bit. (No longer an intrisic - the compiler recognizes the patterns in the body.)
`btc`	Tests and complements the bit.
`btr`	Tests and resets (sets to 0) the bit.
`bts`	Tests and sets the bit.
`inp`	Reads I/O port at `port_address`.
`inpl`	Reads I/O port at `port_address`.
`inpw`	Reads I/O port at `port_address`.
`outp`	Writes and returns `value` to I/O port at `port_address`.
`outpl`	Writes and returns `value` to I/O port at `port_address`.
`outpw`	Writes and returns `value` to I/O port at `port_address`.
`popcnt`	Calculates the number of set bits in a 32-bit integer.
`volatileLoad`	Read/write value from/to the memory location indicated by `ptr`.
`volatileStore`	Read/write `value` from/to the memory location indicated by `ptr`.
`_popcnt`	Calculates the number of set bits in a 32-bit integer using the X86 SSE4 POPCNT instruction. POPCNT is not available on all X86 CPUs.