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root/radiance/ray/src/common/multisamp.c
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Comparing ray/src/common/multisamp.c (file contents):
Revision 2.4 by greg, Tue Feb 25 02:47:21 2003 UTC vs.
Revision 2.7 by greg, Tue Jul 2 18:04:08 2024 UTC

# Line 9 | Line 9 | static const char      RCSid[] = "$Id$";
9  
10   #include "copyright.h"
11  
12 + #include <stdlib.h>
13 +
14   #include "random.h"
15  
16 +
17 + /* Convert 1-dimensional sample to N dimensions */
18   void
19 < multisamp(t, n, r)      /* convert 1-dimensional sample to N dimensions */
16 < double  t[];                    /* returned N-dimensional vector */
17 < register int    n;              /* number of dimensions */
18 < double  r;                      /* 1-dimensional sample [0,1) */
19 > multisamp(double t[], int n, double r)
20   {
21          int     j;
22 <        register int    i, k;
22 >        int     i, k;
23          int     ti[8];
24          double  s;
25  
26 +        while (n > 8)
27 +                t[--n] = frandom();
28          i = n;
29          while (i-- > 0)
30                  ti[i] = 0;
# Line 35 | Line 38 | double r;                      /* 1-dimensional sample [0,1) */
38          }
39          i = n;
40          while (i-- > 0)
41 <                t[i] = 1./256. * (ti[i] + frandom());
41 >                t[i] = (1./256.) * (ti[i] + frandom());
42   }

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