random.h File Reference

Very simple random numbers for regression testing. More...

#include <stdint.h>
#include <cmath>

Include dependency graph for random.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
struct	Athena_test::RNG
	Generator compatible with the STL RandomNumberGenerator. More...
struct	Athena_test::URNG
	Generator compatible with the C++11 STL UniformRandomNumberGenerator. More...
class	Athena_test::normal_distribution< T >
class	Athena_test::uniform_real_distribution< T >

Namespaces
namespace	Athena_test
	functions & macros to test the difference between floats

Macros
#define	ATLAS_NOT_REENTRANT

Functions
uint32_t	Athena_test::rng_seed (uint32_t &seed)
	Generate a random number between 0 and rngmax.
float	Athena_test::randf_seed (uint32_t &seed, float rmax, float rmin=0)
	Generate a floating-point random number between rmin and rmax.
int	Athena_test::randi_seed (uint32_t &seed, int rmax, int rmin=0)
	Generate an integer random number between rmin and rmax.
uint32_t rng	Athena_test::ATLAS_NOT_REENTRANT ()
int randi	Athena_test::ATLAS_NOT_REENTRANT (int rmax, int rmin=0)
float randf	Athena_test::ATLAS_NOT_REENTRANT (float rmax, float rmin=0)

Variables
static const uint32_t	Athena_test::rngmax = static_cast<uint32_t> (-1)
	Maximum number generated.
static uint32_t	Athena_test::seed = 1

Detailed Description

Very simple random numbers for regression testing.

Author

scott snyder snyde.nosp@m.r@bn.nosp@m.l.gov

Date

Aug, 2014

This file provides a few very simple random number generators useful for regression testing. These are 32-bit LCGs, with constants taken from Numerical Recipes. These numbers will have poor quality; however, the results should be completely reproducible across platforms. For regression testing, that's often all that's really needed.

Definition in file random.h.

Macro Definition Documentation

ATLAS_NOT_REENTRANT

#define ATLAS_NOT_REENTRANT

Definition at line 27 of file random.h.