GenLib.h File Reference
Internal library for generating pseudo-random numbers. More...
#include <stdint.h>#include <math.h>
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Data Structures | |
| union | UnionPRNG |
| Polymorphic representation of the PRNG value. More... | |
| struct | PRNGState |
| PRNG state. More... | |
Macros | |
| #define | RandomReal(State) ((double)ValPRNGl(&State) / (~0UL)) |
| Macro for random real generator complient to multi-threading. More... | |
| #define | UniformNoise(State, Bound) (Bound * (2.0 * RandomReal(State) - 1.0)) |
| Macro for symmetric uniform random number generator complient to multi-threading. More... | |
| #define | SpecificNoise(State, Bound) (1.0 + UniformNoise(State, Bound)) |
| Macro for specific noise function complient to multi-threading. More... | |
Typedefs | |
| typedef unsigned char | uchar |
Functions | |
| void | InitPRNG (uint64_t Seed, PRNGState *State) |
| Initialization of the PRNG using Splitmix64 from S. Vigna and D. Lemire. More... | |
| uint32_t | ValPRNGi (PRNGState *State) |
| Generation of one pseudo-random int at a time using Lehmer64 RNG (D. Lemire version) More... | |
| uint64_t | ValPRNGl (PRNGState *State) |
| Generation of one pseudo-random long int at a time using Lehmer64 RNG (D. Lemire version) More... | |
Macro Definition Documentation
◆ RandomReal
| #define RandomReal | ( | State | ) | ((double)ValPRNGl(&State) / (~0UL)) |
The generated number is between 0 and 1
◆ SpecificNoise
| #define SpecificNoise | ( | State, | |
| Bound | |||
| ) | (1.0 + UniformNoise(State, Bound)) |
◆ UniformNoise
| #define UniformNoise | ( | State, | |
| Bound | |||
| ) | (Bound * (2.0 * RandomReal(State) - 1.0)) |
The generated number is between -Bound and Bound
Typedef Documentation
◆ uchar
| typedef unsigned char uchar |
Function Documentation
◆ InitPRNG()
| void InitPRNG | ( | uint64_t | Seed, |
| PRNGState * | State | ||
| ) |
- Parameters
-
Seed Initialization value of the PRNG State Initialized state of the PRNG
References PRNGState::State.
Referenced by main(), and RandomConnections().
◆ ValPRNGi()
| uint32_t ValPRNGi | ( | PRNGState * | State | ) |
- Parameters
-
State PRNG state used to generate the next value
- Returns
- A pseudo-random unsigned int
References UnionPRNG::i, PRNGState::Index, UnionPRNG::l, PRNGState::State, and PRNGState::Value.
Referenced by RandomConnections().
◆ ValPRNGl()
| uint64_t ValPRNGl | ( | PRNGState * | State | ) |
- Parameters
-
State PRNG state used to generate the next value
- Returns
- A pseudo-random unsigned long int
References UnionPRNG::l, PRNGState::State, and PRNGState::Value.
