// types.h

/*
 Written by
 Huang,Jessica C : jessica9@MIT.EDU
 Huang,Kai : kaih@MIT.EDU
 Huang, Edward : eych@MIT.EDU
 Shi,Melissa F : mshi@MIT.EDU
 
 September 25, 2001

 May be freely reproduced for educational or personal use
*/

#ifndef __TYPES_H__
#define __TYPES_H__

#include <stdio.h>


typedef unsigned char Byte;   // 8  bits
typedef unsigned short Word;  // 16 bits
typedef Word Vect[ 2 ];       // array of 2 Words
typedef Byte Key[ 8 ];        // array of 8 Bytes


// converts a Vect into an unsigned long
unsigned long convertVect( Vect vect )
{
    unsigned long n = 0;
    n = vect[ 0 ];
    n = n << 16;
    n = n + vect[ 1 ];
    return n;
}

// copies "from" into "to"
void copyVect( Vect to, Vect from )
{
    to[ 0 ] = from[ 0 ];
    to[ 1 ] = from[ 1 ];
}

// copies "from" into "to"
void copyKey( Key to, Key from )
{
    int i;
    for ( i = 0; i < 8; ++i )
        to[ i ] = from[ i ];
}

// prints the value of "key" in hex
void printKeyHex( Key key )
{
    int i;
    for ( i = 0; i < 8; ++i )
        printf( "%x", key[ i ] );
}

// prints the value of "key" as characters
void printKeyChar( Key key )
{
    int i;
    for ( i = 0; i < 8; ++i )
        printf( "%c", (char) key[ i ] );
}


#endif //__TYPES_H__