🚀 go-pugleaf

The SunOS 3.2 on-line manual page for rand(3v) says:
     rand uses a multiplicative congruential random  number  gen-
     erator  with period 2**32 to return successive pseudo-random
     numbers in the range from 0 to (2**15)-1.

In fact it generates 31-bit integers, as the following test program shows:
main()
    {
	extern int rand();
	extern void srand();
	int i;

	srand(21345);
	for (i = 1; i <= 20; i++) printf("%12d\n", rand());
    }
--

This program generates identical results on a Sun-3/60 and a Sequent 386.
The Sequent documentation describes the range correctly.

The SVID specifies 15-bit results.  The BSD/SV incompatibility is known, but
it looked as though SunOS 3.2 had adopted the SV definition.  Nope, you still
need	(rand()&32767) for portability.