/**
 *********************************************************************
 * @file     rc5_defs.h
 * @author   petrucio@inf.ufsc.br
 ********************************************************************/

#ifndef PET_RC5DEFS_H
#define PET_RC5DEFS_H

/***
 * Mudar isso pra compilar em plataforma de palavra diferente
 ***********************************/
#define WORD_32

/***
 * Definições dependentes de plataforma
 ***********************************/

// Plataforma de 32 bits
#ifdef WORD_32
#define WSIZE 32			// w
#define WORD  unsigned long int
const WORD magicP = 0xb7E15163;    // Constantes magicas
const WORD magicQ = 0x9E3779B9;
#endif

// Plataforma de 16 bits
#ifdef WORD_16
#define WSIZE 16
#define WORD  unsigned short int
const WORD magicP = 0xb7E1;
const WORD magicQ = 0x9E37;
#endif

// Plataforma de 8 bits
#ifdef WORD_8
#define WSIZE 8
#define WORD  unsigned char
const WORD magicP = 0xb7;
const WORD magicQ = 0x9E;
#endif

// Plataforma de 64 bits
#ifdef WORD_64
#define WSIZE 64
#define WORD  unsigned long long int
const WORD magicP = 0xb7E151628AED2A6B;
const WORD magicQ = 0x9E3779B97F4A7C15;
#endif

// Testa se foi definida alguma plataforma
#ifndef WSIZE
#error "Plataforma indefinida (Defina WORD_XX)"
#endif

// BPW = bytes per word
const int BPW = WSIZE / 8;

/***
 * Rotation Macros
 ***********************************/
#define ROTL(x,y) (((x)<<(y&(WSIZE-1))) | ((x)>>(WSIZE-(y&(WSIZE-1)))))
#define ROTR(x,y) (((x)>>(y&(WSIZE-1))) | ((x)<<(WSIZE-(y&(WSIZE-1)))))

#ifndef UCHAR
#define UCHAR unsigned char
#endif

#endif		// PET_RC5DEFS_H