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/*
* V A X S H O R T
*
* Code to manipulate 16-bit integers in VAX order in a
* machine independent manner.
*
* (VAX is a trademark of Digital Equipment Corporation)
*
* Author -
* Michael John Muuss
*
* Source -
* SECAD/VLD Computing Consortium, Bldg 394
* The U. S. Army Ballistic Research Laboratory
* Aberdeen Proving Ground, Maryland 21005-5066
*
* Distribution Status -
* Public Domain, Distribution Unlimited.
*/
#include "vaxshort.h"
/*
* V A X _ G S H O R T
*
* Obtain a 16-bit signed integer from two adjacent characters,
* stored in VAX order, regardless of word alignment.
*/
int
vax_gshort(unsigned char * const msgp) {
int i;
if ((i = (msgp[1] << 8) | msgp[0]) & 0x8000)
return i | ~0xFFFF; /* Sign extend */
return(i);
}
/*
* V A X _ P S H O R T
*/
unsigned char *
vax_pshort(unsigned char * const msgp,
unsigned short const s) {
msgp[0] = s & 0xFF;
msgp[1] = s >> 8;
return msgp + 2;
}
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