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Unix System Administration Handbook 1997 October
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random.c
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1990-03-31
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485b
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32 lines
/*
* random-number generator for testing
*/
static unsigned long next = 1;
/*
- range - generate a random number within an inclusive range
*
* Algorithm from ANSI C standard. Limitation: max-min <= 32767.
*/
int
range(min, max)
int min;
int max;
{
register int temp;
next = next * 1103515245 + 12345;
temp = (int)((next/65536)%32768);
return(temp%(max - min + 1) + min);
}
/*
- seed - seed random number generator
*/
void
seed(n)
long n;
{
next = (unsigned long)n;
}