HiByte
 
Macro to return the high byte of an expression

Syntax

#define HiByte( x ) ((CUInt(x) And &h0000FF00) Shr 8)

Usage

result = HiByte(x)

Parameters

x
Number to retrieve high-byte from.

Return Value

The most significant byte of x.

Description

A Byte is 8 bits. This is best understood by an example.

Example

Dim N As UInteger

'Note there are 16 bits
N = &b1010101110000001
Print "N is                                       "; N
Print "The binary representation of N is          "; Bin(N)
Print "The most significant byte (MSB) of N is    "; HiByte(N)
Print "The least significant byte (LSB) of N is   "; LoByte(N)
Print "The binary representation of the MSB is    "; Bin(HiByte(N))
Print "The binary representation of the LSB is    "; Bin(LoByte(N))
Sleep


The output would look like:
N Is                                       43905
The Binary representation of N Is          1010101110000001
The most significant Byte (MSB) of N Is    171
The least significant Byte (LSB) of N Is   129
The Binary representation of the MSB Is    10101011
The Binary representation of the LSB Is    10000001

Dialect Differences

  • Not available in the -lang qb dialect unless referenced with the alias __HIBYTE.

Differences from QB

  • New to FreeBASIC

See also