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   swab

   Usage
   #include <string.h>
   void swab(char *source,char *destination,int n);

   Description
   Copies  n bytes from source swapping each pair of adjacent bytes.  The
   converted  string  is stored at destination. The integer n  should  be
   even as pairs of characters are swapped.

   Example
   #include <stdio.h>
   #include <string.h>
   char *string1 = "badcfehgjilknm";
   char *string2 = "..............";
   main()
   {
        swab(string1,string2,14);
        printf("string1 [%s] string2 [%s]\n",string1,string2);
   }