/*
    ANY-LICENSE V1.0
    ----------------

    You can use these files under any license approved by the
    Open Source Initiative, preferrably one of the popular licenses,
    as long as the license you choose is compatible to the
    dependencies of these files.

    See http://www.opensource.org/licenses/ for a list of
    approved licenses.

    Author:     Martin Furter <mf@borg.ch>
    Project:    Tins AVR Lib
    Repository: http://repos.borg.ch/projects/tins_avr_lib/trunk
    Copyright:  2015
*/

#ifndef TAL_PRNG_H
#define TAL_PRNG_H

/**

\defgroup PRNG PRNG functions
@{

*/

#include <tal/stdint.h>

/// Initial value for the XORSHIFT16 PRNG.
#define XORSHIFT16_INIT_DEFAULT	257
/**
 * Initialize the XORSHIFT16 PRNG to the given value.
 *
 * @param state		The new state.
 */
void xorshift16_init( uint16_t state );
/**
 * Add the given value to the internal state of the XORSHIFT16 PRNG.
 *
 * @param value		Value to add.
 */
void xorshift16_add( uint16_t value );
/**
 * Returns the next byte from the XORSHIFT16 PRNG.
 *
 * @return		The next byte.
 */
uint8_t xorshift16_next();
/**
 * Returns the internal state of the XORSHIFT16 PRNG.
 *
 * @return		The internal state.
 */
uint16_t xorshift16_get_state();

/// @}
#endif // TAL_PRNG_H