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58ade1022c
chars.h, continuations.h, debug-malloc.h, dynl.c, feature.c, feature.h, filesys.h, fluids.h, fports.h, gc_os_dep.c, gdb_interface.h, gh_eval.c, gh_funcs.c, gh_io.c, gh_list.c, gh_predicates.c, gsubr.c, gsubr.h, guardians.h, guile-func-name-check.in, guile-snarf-docs-texi.in, guile-snarf-docs.in, guile-snarf.awk.in, guile-snarf.in, hashtab.h, iselect.h, keywords.h, lang.c, list.h, load.h, objprop.c, objprop.h, options.c, options.h, random.h, regex-posix.h, root.c, root.h, script.c, snarf.h, stackchk.c, strerror.c, strop.h, strports.h, threads.h, values.c, values.h, version.c, version.h: Updated copyright notice.
139 lines
4.7 KiB
C
139 lines
4.7 KiB
C
/* classes: h_files */
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#ifndef RANDOMH
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#define RANDOMH
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/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include "libguile/__scm.h"
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/*
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* A plugin interface for RNGs
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*
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* Using this interface, it is possible for the application to tell
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* libguile to use a different RNG. This is desirable if it is
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* necessary to use the same RNG everywhere in the application in
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* order to prevent interference, if the application uses RNG
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* hardware, or if the application has special demands on the RNG.
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*
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* Look how the default generator is "plugged in" in scm_init_random().
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*/
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typedef struct scm_t_rstate {
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int reserved0;
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double reserved1;
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/* Custom fields follow here */
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} scm_t_rstate;
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typedef struct scm_t_rng {
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size_t rstate_size; /* size of random state */
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unsigned long (*random_bits) (scm_t_rstate *state); /* gives 32 random bits */
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void (*init_rstate) (scm_t_rstate *state, char *seed, int n);
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scm_t_rstate *(*copy_rstate) (scm_t_rstate *state);
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} scm_t_rng;
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extern scm_t_rng scm_the_rng;
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/*
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* Default RNG
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*/
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typedef struct scm_t_i_rstate {
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scm_t_rstate rstate;
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unsigned long w;
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unsigned long c;
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} scm_t_i_rstate;
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#if (SCM_DEBUG_DEPRECATED == 0)
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# define scm_rstate scm_t_rstate
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# define scm_rng scm_t_rng
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# define scm_i_rstate scm_t_i_rstate
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#endif
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extern unsigned long scm_i_uniform32 (scm_t_i_rstate *);
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extern void scm_i_init_rstate (scm_t_i_rstate *, char *seed, int n);
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extern scm_t_i_rstate *scm_i_copy_rstate (scm_t_i_rstate *);
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/*
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* Random number library functions
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*/
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extern scm_t_rstate *scm_c_make_rstate (char *, int);
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extern scm_t_rstate *scm_c_default_rstate (void);
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#define scm_c_uniform32(RSTATE) scm_the_rng.random_bits (RSTATE)
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extern double scm_c_uniform01 (scm_t_rstate *);
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extern double scm_c_normal01 (scm_t_rstate *);
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extern double scm_c_exp1 (scm_t_rstate *);
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extern unsigned long scm_c_random (scm_t_rstate *, unsigned long m);
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extern SCM scm_c_random_bignum (scm_t_rstate *, SCM m);
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/*
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* Scheme level interface
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*/
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extern scm_t_bits scm_tc16_rstate;
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#define SCM_RSTATEP(obj) SCM_TYP16_PREDICATE (scm_tc16_rstate, obj)
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#define SCM_RSTATE(obj) ((scm_t_rstate *) SCM_CELL_WORD_1 (obj))
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extern unsigned char scm_masktab[256];
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extern SCM scm_var_random_state;
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extern SCM scm_random (SCM n, SCM state);
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extern SCM scm_copy_random_state (SCM state);
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extern SCM scm_seed_to_random_state (SCM seed);
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extern SCM scm_random_uniform (SCM state);
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extern SCM scm_random_solid_sphere_x (SCM v, SCM state);
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extern SCM scm_random_hollow_sphere_x (SCM v, SCM state);
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extern SCM scm_random_normal (SCM state);
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extern SCM scm_random_normal_vector_x (SCM v, SCM state);
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extern SCM scm_random_exp (SCM state);
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extern void scm_init_random (void);
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#endif /* RANDOMH */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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