taisei/src/random.h

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/*
* This software is licensed under the terms of the MIT-License
* See COPYING for further information.
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* ---
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* Copyright (c) 2011-2017, Lukas Weber <laochailan@web.de>.
* Copyright (c) 2012-2017, Andrei Alexeyev <akari@alienslab.net>.
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*/
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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typedef struct RandomState {
uint32_t w;
uint32_t z;
bool locked;
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} RandomState;
int tsrand_test(void);
void tsrand_init(RandomState *rnd, uint32_t seed);
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void tsrand_switch(RandomState *rnd);
void tsrand_seed_p(RandomState *rnd, uint32_t seed);
uint32_t tsrand_p(RandomState *rnd);
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void tsrand_seed(uint32_t seed);
uint32_t tsrand(void);
void tsrand_lock(RandomState *rnd);
void tsrand_unlock(RandomState *rnd);
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double frand(void);
double nfrand(void);
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void __tsrand_fill_p(RandomState *rnd, int amount, const char *file, unsigned int line);
void __tsrand_fill(int amount, const char *file, unsigned int line);
uint32_t __tsrand_a(int idx, const char *file, unsigned int line);
double __afrand(int idx, const char *file, unsigned int line);
double __anfrand(int idx, const char *file, unsigned int line);
#define tsrand_fill_p(rnd,amount) __tsrand_fill_p(rnd, amount, __FILE__, __LINE__)
#define tsrand_fill(amount) __tsrand_fill(amount, __FILE__, __LINE__)
#define tsrand_a(idx) __tsrand_a(idx, __FILE__, __LINE__)
#define afrand(idx) __afrand(idx, __FILE__, __LINE__)
#define anfrand(idx) __anfrand(idx, __FILE__, __LINE__)
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#define TSRAND_MAX INT32_MAX
#define TSRAND_ARRAY_LIMIT 64
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#define srand USE_tsrand_seed_INSTEAD_OF_srand
#define rand USE_tsrand_INSTEAD_OF_rand
/*
* These have to be distinct 16-bit constants k, for which both k*2^16-1 and k*2^15-1 are prime numbers
*/
#define TSRAND_W_COEFF 30963
#define TSRAND_W_SEED_COEFF 19164
#define TSRAND_Z_COEFF 29379
#define TSRAND_Z_SEED_COEFF 31083