LcgRand.h File Reference

#include <stdint.h>
#include <ae2f/Float.h>
#include <ae2f/Call.h>
#include <ae2f/Cast.h>

Go to the source code of this file.

Classes
union	ae2fCL_LcgRandSeed_t
	Pre-generated 64-bits seed type for separation. (under the hood). More...

Macros
#define	ae2f_AnnLcgRandA   1664525
#define	ae2f_AnnLcgRandC   1013904223
#define	ae2f_AnnLcgRandM   4294967296
#define	ae2f_AnnLcgRand(seed)
	Generate a random number from 0 to [ae2f_AnnLcgRandM].
#define	ae2f_AnnLcgRandDistribute(n)
	Shrink the 64-bits unsigned integer to [0, 1] in float type. .
#define	ae2f_AnnLcgRandReal(seed)
	Generate a random number as float point from 0 to 1.
#define	ae2f_AnnLcgRandG()
#define	ae2f_AnnLcgRandRealG()

Typedefs
typedef union ae2fCL_LcgRandSeed_t	ae2fCL_LcgRandSeed_t
	Pre-generated 64-bits seed type for separation. (under the hood).

Variables
ae2f_extern ae2f_SHAREDCALL ae2fCL_LcgRandSeed_t	ae2f_AnnLcgRandSeed
	Pre-defined global seed. Simply change this would change the global seed for lcgG.

Detailed Description

Author

ae2f

Version

0.1

Date

2025-02-13

Copyright

Copyright (c) 2025

Definition in file LcgRand.h.

Macro Definition Documentation

ae2f_AnnLcgRand

#define ae2f_AnnLcgRand

(

seed

)

Value:

((ae2f_AnnLcgRandA * (seed) + ae2f_AnnLcgRandC) % ae2f_AnnLcgRandM)

Generate a random number from 0 to [ae2f_AnnLcgRandM].

Parameters

seed	[uint64_t] Seed for random number calculating.

Returns

[uint64_t] Generated random number + possible next seed.

Definition at line 24 of file LcgRand.h.

ae2f_AnnLcgRandA

#define ae2f_AnnLcgRandA   1664525

Definition at line 17 of file LcgRand.h.

ae2f_AnnLcgRandC

#define ae2f_AnnLcgRandC   1013904223

Definition at line 18 of file LcgRand.h.

ae2f_AnnLcgRandDistribute

#define ae2f_AnnLcgRandDistribute

(

n

)

Value:

(((ae2f_float_t)(n)) / ((ae2f_float_t)ae2f_AnnLcgRandM))

Shrink the 64-bits unsigned integer to [0, 1] in float type.
.

Parameters

n	[uint64_t] A 64-bits unsigned integer.

Returns

[ae2f_float_t] [0 ~ 1]

Definition at line 33 of file LcgRand.h.

ae2f_AnnLcgRandG

#define ae2f_AnnLcgRandG

(

)

Value:

ae2f_AnnLcgRand(ae2f_AnnLcgRandSeed.u64)

See also

ae2f_AnnLcgRand

Definition at line 67 of file LcgRand.h.

ae2f_AnnLcgRandM

#define ae2f_AnnLcgRandM   4294967296

Definition at line 19 of file LcgRand.h.

ae2f_AnnLcgRandReal

#define ae2f_AnnLcgRandReal

(

seed

)

Value:

ae2f_AnnLcgRandDistribute(ae2f_AnnLcgRand(seed))

Generate a random number as float point from 0 to 1.

Parameters

seed	[uint64_t]

Returns

[ae2f_float_t] Generated number from 0 to 1.

See ae2f_AnnLcgRand ae2f_AnnLcgRandDistribute

Definition at line 44 of file LcgRand.h.

ae2f_AnnLcgRandRealG

#define ae2f_AnnLcgRandRealG

(

)

Value:

ae2f_AnnLcgRandReal(ae2f_AnnLcgRandSeed.u64)

See also

ae2f_AnnLcgRandReal

Definition at line 70 of file LcgRand.h.

Variable Documentation

ae2f_AnnLcgRandSeed

ae2f_extern ae2f_SHAREDCALL ae2fCL_LcgRandSeed_t ae2f_AnnLcgRandSeed

Pre-defined global seed.
Simply change this would change the global seed for lcgG.

See also

ae2f_AnnLcgRandG

ae2f_AnnLcgRandRealG

Definition at line 64 of file LcgRand.h.