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Last change
on this file since 57 was
49,
checked in by Sam Hocevar, 15 years ago
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- Imported original public domain release, for future reference.
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-
Property svn:keywords set to
Id
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File size:
498 bytes
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| Line | |
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| 1 | #include "jrand.hpp" |
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| 2 | #include <time.h> |
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| 3 | #include <stdio.h> |
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| 4 | |
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| 5 | unsigned short rtable[RAND_TABLE_SIZE]; |
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| 6 | unsigned short rand_on=0; |
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| 7 | |
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| 8 | void jrand_init() |
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| 9 | { |
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| 10 | // make sure random table is always the same. |
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| 11 | unsigned long rseed=('F'<<24)|('U'<<16)|('C'<<8)|'K'; |
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| 12 | int i; |
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| 13 | unsigned short *tp=rtable; |
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| 14 | for (i=0;i<RAND_TABLE_SIZE;i++,tp++) |
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| 15 | { |
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| 16 | rseed=rseed*0x41c64e6d+12345; |
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| 17 | *tp=(rseed>>16)&0xffff; |
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| 18 | } |
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| 19 | |
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| 20 | time_t t=time(NULL); // get an original random seed now. |
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| 21 | rand_on=t%RAND_TABLE_SIZE; |
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| 22 | } |
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| 23 | |
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