mozzi_rand.h

/*
 * mozzi_rand.h
 *
 * This file is part of Mozzi.
 *
 * Copyright 2012-2024 Tim Barrass and the Mozzi Team
 *
 * Mozzi is licensed under the GNU Lesser General Public Licence (LGPL) Version 2.1 or later.
 *
 */
 
#ifndef MOZZI_RAND_H_
#define MOZZI_RAND_H_
 
#include <Arduino.h>
#include "internal/mozzi_rand_p.h"
 
inline uint32_t xorshift96() { return MozziPrivate::MozziRandPrivate::xorshift96(); };
 
inline void randSeed(uint32_t seed) { MozziPrivate::randSeed(seed); };
 
inline void randSeed() { MozziPrivate::MozziRandPrivate::autoSeed(); };
 
inline void xorshiftSeed(uint32_t seed) { randSeed(seed); };
 
inline int8_t rand(int8_t minval, int8_t maxval)
{
  return (int8_t) ((((int) (lowByte(xorshift96()))) * (maxval-minval))>>8) + minval;
}
 
inline int8_t rand(int8_t maxval)
{
  return (int8_t) ((((int) (lowByte(xorshift96()))) * maxval)>>8);
}
 
inline uint8_t rand(uint8_t minval, uint8_t maxval)
{
  return (uint8_t) ((((unsigned int) (lowByte(xorshift96()))) * (maxval-minval))>>8) + minval;
}
 
inline uint8_t rand(uint8_t maxval)
{
  return (uint8_t) ((((unsigned int) (lowByte(xorshift96()))) * maxval)>>8);
}
 
inline int rand(int minval, int maxval)
{
  return (int) ((((xorshift96() & 0xFFFF) * (maxval-minval))>>16) + minval);
}
 
inline int rand(int maxval)
{
  return (int) (((xorshift96() & 0xFFFF) * maxval)>>16);
}
 
inline unsigned int rand(unsigned int minval, unsigned int maxval)
{
  return (unsigned int) ((((xorshift96() & 0xFFFF) * (maxval-minval))>>16) + minval);
}
 
inline unsigned int rand(unsigned int maxval)
{
  return (unsigned int) (((xorshift96() & 0xFFFF) * maxval)>>16);
}
 
inline uint8_t randMidiNote()
{
  return lowByte(xorshift96())>>1;
}
 
#endif /* MOZZI_RAND_H_ */