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Definition of Bytes
Post 302860661 by stoudtLion on Monday 7th of October 2013 01:27:16 AM
10-07-2013
Definition of Bytes
A byte is the smallest unit of storage which can be accessed in a computer's memory- either in RAM or ROM.It also holds exactly 8 bits.But its old view one byte was sufficient to hold one 8 bit character.Modern days especially on .NET or international versions of Win 32, 16 bits is needed.
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Last edited by Don Cragun; 10-21-2013 at 08:26 AM.. Reason: Spam
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LEARN ABOUT OSF1
swap_lw_bytes
swap_lw_bytes(9r) swap_lw_bytes(9r) NAME
swap_lw_bytes, swap_word_bytes, swap_words - General: Perform byte-swapping operations SYNOPSIS
unsigned int swap_lw_bytes( unsigned int buffer ); unsigned int swap_word_bytes( unsigned int buffer ); unsigned int swap_words( unsigned int buffer ); ARGUMENTS
Specifies a 32-bit (4 bytes) quantity. DESCRIPTION
The swap_lw_bytes interface performs a longword byte swap. The swap_word_bytes interface performs a short word byte swap. The swap_words interface performs a word byte swap. Many computer vendors support devices that use a big endian model of byte ordering. Because Digital devices support the little endian model of byte ordering, there is a need for these byte-swapping interfaces. In addition, some buses (for example, the VMEbus) can have specific or implied byte ordering that may require the use of these interfaces. Given that a longword is equal to 4 bytes; a short word is equal to 2 bytes; and 1 byte is equal to 8 bits, these interfaces swap bytes as follows: The swap_lw_bytes interface takes the 32-bit quantity specified by the buffer argument and swaps all 4 bytes. The swap_word_bytes interface takes the 32-bit quantity specified by the buffer argument and swaps the individual bytes that make up each word of the 32-bit quantity. The swap_words interface takes the 32-bit quantity specified by the buffer argument and swaps the two 16-bit words. The following illustration compares the byte swapping performed by these interfaces. 31 0 +---+---+---+---+ Starting value: | a | b | c | d | +---+---+---+---+ Long word byte swap (swap_lw_bytes) 31 0 +---+---+---+---+ Ending value: | d | c | b | a | +-------+---+---+ Short word byte swap (swap_word_bytes) 31 0 +---+---+---+---+ Ending value: | b | a | d | c | +---+---+---+---+ 31 0 +---+---+---+---+ Starting value: | ab | cd | +---+---+---+---+ Word byte swap (swap_words) 31 0 +---+---+---+---+ Ending value: | cd | ab | +---+---+---+---+ RETURN VALUES
Upon successful completion, these interfaces return the swapped bytes. swap_lw_bytes(9r)