rngs Module Reference

Functions/Subroutines
integer(kind=i8) function, public	kiss64 (seed)
integer(kind=i8) function, public	superkiss64 ()
real function	i8tod (x)
	Convert integer I8 random numbers to double precision real values in [0,1]. More...
real function, public	dkiss64 ()

Variables
integer, parameter, public	i8 = 8

Detailed Description

Author

Manuel Jung

random number generators Kiss64: Period: \( > 2^{124} \approx 2.1 \cdot 10^{37} \) Source: https://de.wikipedia.org/wiki/KISS_(Zufallszahlengenerator) http://fortranwiki.org/fortran/show/kiss64 DKiss64: Kiss64 converted to double intervall [0,1] SuperKiss64: A Super KISS. Period of \( 5\cdot 2^{1320480} \cdot (2^{64}-1) \) A KISS (Keep-It-Simple-Stupid) RNG combining, by addition mod \( 2^{32} \) , three simple RNGs: CMWC (Complementary-Multiply-With-Carry)

• CNG (Congruential)
• XS(Xorshift) with resulting period greater than \( 10^{402575} \) Source: http://mathforum.org/kb/message.jspa?messageID=6914945

Function/Subroutine Documentation

dkiss64()

real function, public rngs::dkiss64

(

)

Definition at line 181 of file rngs.f90.

i8tod()

real function rngs::i8tod ( integer(kind=i8)  x )

private

Convert integer I8 random numbers to double precision real values in [0,1].

Definition at line 161 of file rngs.f90.

kiss64()

integer(kind=i8) function, public rngs::kiss64

(

integer(kind=i8), optional

seed

)

Definition at line 62 of file rngs.f90.

superkiss64()

integer(kind=i8) function, public rngs::superkiss64

(

)

Definition at line 96 of file rngs.f90.

Variable Documentation

i8

integer parameter public rngs::i8 = 8

Definition at line 47 of file rngs.f90.