Difference between revisions of "Ns rand"
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(imported from WiKit id 625) |
(added caveat for ns_rand 1) |
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% ns_rand 10 | % ns_rand 10 | ||
7 | 7 | ||
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| + | '''CAVEAT''' | ||
| + | |||
| + | : [ns_rand 1] will always produce the result 0. [ns_rand 2] will produce the desired "coin flip" outcome of 0 or 1. | ||
'''SEE ALSO''' | '''SEE ALSO''' | ||
Revision as of 23:15, 2 December 2005
Man page: http://aolserver.com/docs/tcl/ns_rand.html
NAME
- ns_rand - Generate a random number
SYNOPSIS
- ns_rand ?maximum?
DESCRIPTION
- This command generates a cryptographically secure random number. If maximum is not specified, the random number returned is a floating-point value n such that 0.0 <= n < 1.0. If maximum is specified, it must be a positive integer between 1 and 2147483647, in which case ns_rand will return an integer value n such that 0 <= n <= max - 1.
- Internally ns_rand is implemented with the drand48() and lrand48() standard library functions. An internal random seed is generated the first time ns_rand is called after the server starts.
EXAMPLES
% ns_rand 0.39938485692
% ns_rand 10 7
CAVEAT
- [ns_rand 1] will always produce the result 0. [ns_rand 2] will produce the desired "coin flip" outcome of 0 or 1.
SEE ALSO
