Unnamed namespace for MRG32k3a implementation details. More...
Classes | |
struct | Precalculated |
The transition matrices of the two MRG components (in matrix form), raised to all powers of 2 from 1 to 191. More... | |
Typedefs | |
typedef double | Matrix [3][3] |
Type for 3x3 matrix of doubles. More... | |
Functions | |
void | MatMatModM (const Matrix A, const Matrix B, Matrix C, double m) |
Compute the matrix C = A*B MOD m. More... | |
void | MatTwoPowModM (const Matrix src, Matrix dst, double m, int32_t e) |
Compute the matrix B = (A^(2^e) Mod m); works also if A = B. More... | |
void | MatVecModM (const Matrix A, const double s[3], double v[3], double m) |
Compute the vector v = A*s MOD m. More... | |
double | MultModM (double a, double s, double c, double m) |
Return (a*s + c) MOD m; a, s, c and m must be < 2^35. More... | |
struct Precalculated | PowerOfTwoConstants (void) |
Compute the transition matrices of the two MRG components. More... | |
void | PowerOfTwoMatrix (int n, Matrix a1p, Matrix a2p) |
Get the transition matrices raised to a power of 2. More... | |
Variables | |
const double | a12 = 1403580.0 |
First component multiplier of n - 2 value. More... | |
const double | a13n = 810728.0 |
First component multiplier of n - 3 value. More... | |
const Matrix | A1p0 |
First component transition matrix. More... | |
const double | a21 = 527612.0 |
Second component multiplier of n - 1 value. More... | |
const double | a23n = 1370589.0 |
Second component multiplier of n - 3 value. More... | |
const Matrix | A2p0 |
Second component transition matrix. More... | |
const double | m1 = 4294967087.0 |
First component modulus, 232 - 209. More... | |
const double | m2 = 4294944443.0 |
Second component modulus, 232 - 22853. More... | |
const double | norm = 1.0 / (m1 + 1.0) |
Normalization to obtain randoms on [0,1). More... | |
const double | two17 = 131072.0 |
Decomposition factor for computing a*s in less than 53 bits, 217 More... | |
const double | two53 = 9007199254740992.0 |
IEEE-754 floating point precision, 253 More... | |
Unnamed namespace for MRG32k3a implementation details.
struct Precalculated anonymous_namespace{rng-stream.cc}::PowerOfTwoConstants | ( | void | ) |
Compute the transition matrices of the two MRG components.
Definition at line 301 of file rng-stream.cc.
References anonymous_namespace{rng-stream.cc}::Precalculated::a1, anonymous_namespace{rng-stream.cc}::Precalculated::a2, and MatTwoPowModM().
Referenced by PowerOfTwoMatrix().
void anonymous_namespace{rng-stream.cc}::PowerOfTwoMatrix | ( | int | n, |
Matrix | a1p, | ||
Matrix | a2p | ||
) |
Get the transition matrices raised to a power of 2.
[in] | n | The power of 2. |
[out] | a1p | The first transition matrix power. |
[out] | a2p | The second transition matrix power. |
Definition at line 318 of file rng-stream.cc.
References anonymous_namespace{rng-stream.cc}::Precalculated::a1, anonymous_namespace{rng-stream.cc}::Precalculated::a2, and PowerOfTwoConstants().
Referenced by ns3::RngStream::AdvanceNthBy().