system.h

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/*******************************************************************************
 * \copyright   This file is part of the GADGET4 N-body/SPH code developed
 * \copyright   by Volker Springel. Copyright (C) 2014-2020 by Volker Springel
 * \copyright   (vspringel@mpa-garching.mpg.de) and all contributing authors.
 *******************************************************************************/
 
#ifndef SYSTEM_H
#define SYSTEM_H
 
#include <gsl/gsl_rng.h>
#include <stdio.h>
 
extern gsl_rng *random_generator; 
void myflush(FILE *fstream);
 
void enable_core_dumps_and_fpu_exceptions(void);
 
void permutate_chunks_in_list(int ncount, int *list);
 
void subdivide_evenly(long long N, int pieces, int index_bin, long long *first, int *count);
void subdivide_evenly(int N, int pieces, int index, int *first, int *count);
void subdivide_evenly_get_bin(int N, int pieces, int index, int *bin);
 
void init_rng(int thistask);
double get_random_number(void);
 
int my_fls(unsigned int x);
 
template <typename T>
inline T square(T const value)
{
  return value * value;
}
 
#endif