Difference between revisions of "RAND()"

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==Syntax==
 
==Syntax==
RAND([<expN>])
+
RAND()
  
 
==See Also==
 
==See Also==
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==Description==
 
==Description==
The RAND() function returns a number in the range 1 to 2147483647. Subsequent calls to RAND() will produce different numbers, but the sequence of numbers will be the same each time.
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The RAND() function returns a number in the range 1 to 2147483647. Subsequent calls to RAND() will produce different numbers, but the sequence of numbers will be the same each time.
 
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With SET COMPATIBLE set to FOXPRO | FOXBASE | VFP the number range is between 0 and 1 and a seed can be specified in <expN>. Using the same positive value in <expN> and omitting it in subsequent calls to the RAND() function will return the same sequence of numbers. Using a negative value in <expN> creates a seed based on the system clock, so subsequent RAND() calls will produce a different sequence of values.
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==Example==
 
==Example==
 
<code lang="recital">
 
<code lang="recital">
 
? rand()
 
? rand()
    31466
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  31466.00
 
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set compatible to foxpro
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? rand(-1)
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      0.66
+
? rand()
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      0.73
+
 
</code>
 
</code>
  

Revision as of 08:07, 10 February 2012

Purpose

Function to return a random number

Syntax

RAND()

See Also

GETPID(), TMPNAM(), SYS()

Description

The RAND() function returns a number in the range 1 to 2147483647. Subsequent calls to RAND() will produce different numbers, but the sequence of numbers will be the same each time.

Example

? rand()
  31466.00