arm_inlines_binary.h File Reference

Binary manipulation inlines. More...

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Functions
DWORD	maskBits (const BYTE bits)
	Create specified number of bits mask.
BYTE	nbBitsState (const DWORD val, const BYTE bits, const BOOL state)
	Check the number of clear/set bits in a variable.
SDWORD	getMSBitSet (const DWORD val)
	Get power of 2 of the most significant set bit.
DWORD	swapBits (const DWORD val, const BYTE bits)
	Swap specified number of bits in value (mirroring bits)

Detailed Description

Binary manipulation inlines.

Author

SMFSW

Copyright

MIT (c) 2017-2024, SMFSW

Function Documentation

getMSBitSet()

SDWORD getMSBitSet ( const DWORD val )

inline

Get power of 2 of the most significant set bit.

Note

function limited to arm native 32b

Parameters

[in]

val

- Variable to check for bits

Returns

Power of 2 of most significant bit set

Return values

>=0	Index (power of 2) of most significant bit set
-1	no bit set

maskBits()

DWORD maskBits ( const BYTE bits )

inline

Create specified number of bits mask.

Note

function limited to arm native 32b

Parameters

[in]

bits

- Number of bits to create mask

Returns

Mask value for specified number of bits

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nbBitsState()

BYTE nbBitsState ( const DWORD val, const BYTE bits, const BOOL state )

inline

Check the number of clear/set bits in a variable.

Note

function limited to arm native 32b

Parameters

[in]	val	- Variable to check for bits
[in]	bits	- Number of bits to check
[in]	state	- Logic state to check

Returns

Number of state specified bits in val

swapBits()

DWORD swapBits ( const DWORD val, const BYTE bits )

inline

Swap specified number of bits in value (mirroring bits)

Note

function limited to arm native 32b

Parameters

[in]	val	- Value to swap
[in]	bits	- Number of bits to swap

Returns

Swapped binary value