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| 1 | .\" @(#)rand.3c 6.2 (Berkeley) 9/29/85
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| 2 | .\"
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| 3 | .TH RAND 3 "September 29, 1985"
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| 4 | .AT 3
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| 5 | .SH NAME
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| 6 | rand, srand \- random number generator
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| 7 | .SH SYNOPSIS
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| 8 | .nf
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| 9 | .ft B
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| 10 | #include <stdlib.h>
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| 11 |
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| 12 | void srand(unsigned \fIseed\fP)
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| 13 | unsigned rand(void)
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| 14 | .ft R
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| 15 | .fi
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| 16 | .SH DESCRIPTION
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| 17 | .B Rand
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| 18 | uses a multiplicative congruential
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| 19 | random number generator with period
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| 20 | .if t 2\u\s732\s0\d
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| 21 | .if n 2**32
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| 22 | to return successive pseudo-random
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| 23 | numbers in the range from 0 to
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| 24 | .BR RAND_MAX .
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| 25 | .PP
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| 26 | The generator is reinitialized by calling
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| 27 | .B srand
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| 28 | with 1 as argument.
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| 29 | It can be set to a random starting point by calling
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| 30 | .B srand
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| 31 | with whatever you like as argument.
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| 32 | .SH "SEE ALSO"
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| 33 | .BR random (3).
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