RAPI: R_ext/Random.h Source File

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00001 /*
00002  *  R : A Computer Language for Statistical Data Analysis
00003  *  Copyright (C) 1998-2016    The R Core Team
00004  *
00005  *  This program is free software; you can redistribute it and/or modify
00006  *  it under the terms of the GNU Lesser General Public License as published by
00007  *  the Free Software Foundation; either version 2.1 of the License, or
00008  *  (at your option) any later version.
00009  *
00010  *  This program is distributed in the hope that it will be useful,
00011  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  *  GNU Lesser General Public License for more details.
00014  *
00015  *  You should have received a copy of the GNU Lesser General Public License
00016  *  along with this program; if not, a copy is available at
00017  *  https://www.R-project.org/Licenses/
00018  */
00019 
00020 /* Included by R.h: API */
00021 
00022 #ifndef R_RANDOM_H
00023 #define R_RANDOM_H
00024 
00025 #include <R_ext/Boolean.h>
00026 
00027 #ifdef  __cplusplus
00028 extern "C" {
00029 #endif
00030 
00031 typedef enum {
00032     WICHMANN_HILL,
00033     MARSAGLIA_MULTICARRY,
00034     SUPER_DUPER,
00035     MERSENNE_TWISTER,
00036     KNUTH_TAOCP,
00037     USER_UNIF,
00038     KNUTH_TAOCP2,
00039     LECUYER_CMRG
00040 } RNGtype;
00041 
00042 /* Different kinds of "N(0,1)" generators :*/
00043 typedef enum {
00044     BUGGY_KINDERMAN_RAMAGE,
00045     AHRENS_DIETER,
00046     BOX_MULLER,
00047     USER_NORM,
00048     INVERSION,
00049     KINDERMAN_RAMAGE
00050 } N01type;
00051 
00052 
00053 void GetRNGstate(void);
00054 void PutRNGstate(void);
00055 
00056 double unif_rand(void);
00057 /* These are also defined in Rmath.h */
00058 double norm_rand(void);
00059 double exp_rand(void);
00060 
00061 typedef unsigned int Int32;
00062 double * user_unif_rand(void);
00063 void user_unif_init(Int32);
00064 int * user_unif_nseed(void);
00065 int * user_unif_seedloc(void);
00066 
00067 double * user_norm_rand(void);
00068 
00069 #ifdef  __cplusplus
00070 }
00071 #endif
00072 
00073 #endif /* R_RANDOM_H */