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Annotation of researchv10dc/dist/man/v4/man3/rand.3, revision 1.1.1.1

1.1       root        1: .th RAND III 1/15/73
                      2: .sh NAME
                      3: rand \*- random number generator
                      4: .sh SYNOPSIS
                      5: (seed in r0)
                      6: .br
                      7: .ft B
                      8: jsr    pc,srand        /to initialize
                      9: .s3
                     10: jsr pc,rand    /to get a random number
                     11: .s3
                     12: .nf
                     13: srand(seed)
                     14: int seed;
                     15: .s3
                     16: rand( )
                     17: .fi
                     18: .ft R
                     19: .s3
                     20: .sh DESCRIPTION
                     21: .it Rand
                     22: uses a multiplicative congruential
                     23: random number generator to return successive pseudo-random
                     24: numbers (in r0) in the range from 1 to 2\u\s715\s10\d\*-1.
                     25: .s3
                     26: The generator is reinitialized by calling
                     27: .it srand
                     28: with 1 as argument (in r0).
                     29: It can be set to a random starting point by calling
                     30: .it srand
                     31: with whatever you like as argument,
                     32: for example the low-order word
                     33: of the time.
                     34: .sh WARNING
                     35: The author of this routine has been writing
                     36: random-number generators for many years and has never been
                     37: known to write one that worked.
                     38: .sh BUGS
                     39: The low-order bits are not very random.

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