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Comparing ray/src/common/random.h (file contents):
Revision 2.8 by greg, Sat Feb 22 02:07:22 2003 UTC vs.
Revision 2.20 by greg, Wed May 27 08:37:26 2015 UTC

#	Line 1 | Line 1
1	<	/* RCSid: $Id$ */
1	>	/* RCSid $Id$ */
2		/*
3		*  random.h - header file for random(3) and urand() function.
4		*/
5	+	#ifndef _RAD_RANDOM_H_
6	+	#define _RAD_RANDOM_H_
7	+	#ifdef __cplusplus
8	+	extern "C" {
9	+	#endif
10
11	<	/* ====================================================================
7	<	* The Radiance Software License, Version 1.0
8	<	*
9	<	* Copyright (c) 1990 - 2002 The Regents of the University of California,
10	<	* through Lawrence Berkeley National Laboratory.   All rights reserved.
11	<	*
12	<	* Redistribution and use in source and binary forms, with or without
13	<	* modification, are permitted provided that the following conditions
14	<	* are met:
15	<	*
16	<	* 1. Redistributions of source code must retain the above copyright
17	<	*         notice, this list of conditions and the following disclaimer.
18	<	*
19	<	* 2. Redistributions in binary form must reproduce the above copyright
20	<	*       notice, this list of conditions and the following disclaimer in
21	<	*       the documentation and/or other materials provided with the
22	<	*       distribution.
23	<	*
24	<	* 3. The end-user documentation included with the redistribution,
25	<	*           if any, must include the following acknowledgment:
26	<	*             "This product includes Radiance software
27	<	*                 (http://radsite.lbl.gov/)
28	<	*                 developed by the Lawrence Berkeley National Laboratory
29	<	*               (http://www.lbl.gov/)."
30	<	*       Alternately, this acknowledgment may appear in the software itself,
31	<	*       if and wherever such third-party acknowledgments normally appear.
32	<	*
33	<	* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
34	<	*       and "The Regents of the University of California" must
35	<	*       not be used to endorse or promote products derived from this
36	<	*       software without prior written permission. For written
37	<	*       permission, please contact [email protected].
38	<	*
39	<	* 5. Products derived from this software may not be called "Radiance",
40	<	*       nor may "Radiance" appear in their name, without prior written
41	<	*       permission of Lawrence Berkeley National Laboratory.
42	<	*
43	<	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
44	<	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
45	<	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
46	<	* DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
47	<	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48	<	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49	<	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
50	<	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
51	<	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
52	<	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
53	<	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54	<	* SUCH DAMAGE.
55	<	* ====================================================================
56	<	*
57	<	* This software consists of voluntary contributions made by many
58	<	* individuals on behalf of Lawrence Berkeley National Laboratory.   For more
59	<	* information on Lawrence Berkeley National Laboratory, please see
60	<	* <http://www.lbl.gov/>.
61	<	*/
11	>	#ifdef  _WIN32
12
13	<	#ifdef  NORANDOM
13	>	#include <stdlib.h>
14
15	<	#undef  random
66	<	#define  random()       1073741820
67	<	#undef  srandom
68	<	#define  srandom(s)     (s)
69	<	#define  frandom()      0.5
70	<	#define  urand(i)       0.5
71	<	#define  initurand(n)   (n)
72	<
73	<	#else
74	<
75	<	#ifdef  MSDOS
76	<
15	>	#if (RAND_MAX <= 65536)
16		#define random()        ((long)rand()<<16^(long)rand()<<6^(long)rand()>>4)
17	+	#else
18	+	#define random()        rand()
19	+	#endif
20		#define srandom(s)      srand((unsigned)(s))
21
22	<	#define frandom()       (rand()*(1./32768.))
22	>	#define frandom()       (rand()*(1./(RAND_MAX+.5)))
23
24		#else
83	–	#ifdef  BSD
25
85	–	extern long  random();
86	–
87	–	#define  frandom()      (random()*(1./2147483648.))
88	–
89	–	#else
90	–
26		extern long  lrand48();
27		extern double  drand48();
28
#	Line 96 | Line 31 | extern double  drand48();
31		#define  frandom()      drand48()
32
33		#endif
99	–	#endif
34
101	–	#ifdef  MC
102	–
103	–	#define  urand(i)       frandom()
104	–	#define  initurand(n)   (n)
105	–
106	–	#else
107	–
35		extern unsigned short   *urperm;
36		extern int      urmask;
37
38	<	#define  urand(i)       ((urperm[(i)&urmask]+frandom())/(urmask+1))
38	>	#define  urand(i)       (urmask ? (urperm[(i)&urmask]+frandom())/(urmask+1.) \
39	>	: frandom())
40
41	<	#endif
41	>	extern int      initurand(int size);
42
115	–	#endif
116	–
117	–	#ifdef NOPROTO
118	–
119	–	extern int      initurand();
120	–	extern int      ilhash();
121	–	extern int      urind();
122	–	extern void     multisamp();
123	–
124	–	#else
43		/* defined in urand.c */
126	–	extern int      initurand(int size);
44		extern int      ilhash(int *d, int n);
45		/* defined in urind.c */
46		extern int      urind(int s, int i);
47		/* defined in multisamp.c */
48		extern void     multisamp(double t[], int n, double r);
49
50	+
51	+	#ifdef __cplusplus
52	+	}
53		#endif
54	+	#endif /* _RAD_RANDOM_H_ */
55	+

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