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#endif |
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/* |
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< |
* Uncorrelated (anticorrelated) random function |
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> |
* Anticorrelated random function due to Christophe Schlick |
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*/ |
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#include "random.h" |
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short *urperm; /* urand() permutation */ |
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int urmask; /* bits used in permutation */ |
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– |
static int urorder; /* number of bits */ |
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initurand(size) /* initialize urand() for size entries */ |
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int |
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< |
urhash(d, n) /* hash a set of integer values */ |
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> |
ilhash(d, n) /* hash a set of integer values */ |
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register int *d; |
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register int n; |
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{ |
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static int tab[8] = {13623,353,1637,5831,2314,3887,5832,8737}; |
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< |
register unsigned hval; |
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> |
register int hval; |
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hval = 0; |
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while (n-- > 0) |
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hval += *d++ * tab[n&7]; |
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< |
return(hval & urmask); |
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> |
return(hval); |
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} |