V3/usr/man/man3/rand.3

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NAME		rand -- random number generator
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SYNOPSIS	jsr pc,srand	/to initialize
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jsr pc,rand	/to get a random number
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DESCRIPTION	The routine uses a multiplicative congruential
random number generator to return successive pseudo-random
numbers in r0 in the range from 1 to 2^15-1.
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The generator is reinitialized by calling srand with 1 in r0.
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It can be set to a random starting point by calling
srand with whatever you like in r0,
for example the result left in r1 from sys___ time____.
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FILES		kept in /lib/liba.a
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SEE ALSO	--
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DIAGNOSTICS	--
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BUGS		--
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WARNING		The author of this routine has been writing
random-number generators for many years and has never been
known to write one that worked.