RAND.3
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上传日期:2007-02-01
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操作系统开发
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C/C++
- ." @(#)rand.3c 6.2 (Berkeley) 9/29/85
- ."
- .TH RAND 3 "September 29, 1985"
- .AT 3
- .SH NAME
- rand, srand - random number generator
- .SH SYNOPSIS
- .nf
- .ft B
- #include <stdlib.h>
- void srand(unsigned fIseedfP)
- unsigned rand(void)
- .ft R
- .fi
- .SH DESCRIPTION
- .B Rand
- uses a multiplicative congruential
- random number generator with period
- .if t 2us732s0d
- .if n 2**32
- to return successive pseudo-random
- numbers in the range from 0 to
- .BR RAND_MAX .
- .PP
- The generator is reinitialized by calling
- .B srand
- with 1 as argument.
- It can be set to a random starting point by calling
- .B srand
- with whatever you like as argument.
- .SH "SEE ALSO"
- .BR random (3).