swab

Swap adjacent bytes

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Contents

Interface
Description
See Also
History
Page Comments

Interface

#include <string.h>void  swab (const void * restrict src, void * restrict dst, size_t len)

Description

The function swab copies len bytes from the location referenced by src to the location referenced by dst, swapping adjacent bytes. This is used to copy data from one machine to another with a different byte order.

The argument len must be an even number.

Example:

Example - Swap adjacent bytes

Workings

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int main()
{
  const char* source="oCedoCsgi  srgae t";
  char target[18];
  swab(source, target, strlen(source));
  printf("swab(%s) becomes (%s)",source, target);
  return 0; 
}

Solution

Output:

swab(oCedoCsgi  srgae t) becomes (CodeCogs is great )

History

A swab function appeared in Version 7 AT&T UNIX.

Page Comments

$muthamilnathan\′s Photo$

muthamilnathan

6 Feb 11, 6:27AM

excellent idea

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Interface

Description

Example - Swap adjacent bytes

See Also

History

Page Comments