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Annotation of 43BSDTahoe/man/man3f/rand.3, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1983 Regents of the University of California.
        !             2: .\" All rights reserved.  The Berkeley software License Agreement
        !             3: .\" specifies the terms and conditions for redistribution.
        !             4: .\"
        !             5: .\"    @(#)rand.3f     6.1 (Berkeley) 5/15/85
        !             6: .\"
        !             7: .TH RAND 3F "May 15, 1985"
        !             8: .UC 5
        !             9: .SH NAME
        !            10: rand, drand, irand \- return random values
        !            11: .SH SYNOPSIS
        !            12: .B function irand (iflag)
        !            13: .sp 1
        !            14: .B function rand (iflag)
        !            15: .sp 1
        !            16: .B double precision function drand (iflag)
        !            17: .SH DESCRIPTION
        !            18: .ft B
        !            19: The newer random(3f) should be used in new applications;
        !            20: rand remains for compatibilty.
        !            21: .ft R
        !            22: .PP
        !            23: These functions use
        !            24: .IR rand (3C)
        !            25: to generate sequences of random numbers.
        !            26: If
        !            27: .I iflag
        !            28: is '1', the generator is restarted and the first random value is returned.
        !            29: If
        !            30: .I iflag
        !            31: is otherwise non-zero, it is used as a new seed for the random number
        !            32: generator, and the first new random value is returned.
        !            33: .PP
        !            34: .I Irand
        !            35: returns positive integers in the range 0 through 2147483647.
        !            36: .I Rand
        !            37: and
        !            38: .I drand
        !            39: return values in the range 0. through 1.0 .
        !            40: .SH FILES
        !            41: .ie \nM /usr/ucb/lib/libF77.a
        !            42: .el /usr/lib/libF77.a
        !            43: .SH "SEE ALSO"
        !            44: random(3F), rand(3C)
        !            45: .SH BUGS
        !            46: The algorithm returns a 15 bit quantity on the PDP11; a 31 bit quantity
        !            47: on the VAX.
        !            48: .I Irand
        !            49: on the PDP11 calls
        !            50: .IR rand (3C)
        !            51: twice to form a 31 bit quantity, but bit 15 will always be 0.

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