Difference between revisions of "SGN"

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{{CodeStart}}
 
{{CodeStart}}
 
n = -100
 
n = -100
IF SGN(n) = -1 THEN n = {{Cl|ABS}}(n)
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{{Cl|IF...THEN|IF}} {{Cl|SGN}}(n) = -1 THEN n = {{Cl|ABS}}(n)
 
PRINT n '' ''
 
PRINT n '' ''
 
{{CodeEnd}}
 
{{CodeEnd}}
{{OutputStart}}
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{{OutputStart}} 100
100
 
 
{{OutputEnd}}
 
{{OutputEnd}}
  

Revision as of 04:46, 14 August 2012

The SGN function returns the sign of a number value.


Syntax

sign% = SGN(value)


  • Returns -1 when a sign is negative, 0 when a value is zero or 1 when a value is positive.
  • Used to hold the original sign of a number.
  • QB64 allows programs to return only _UNSIGNED variable values using a _DEFINE statement.


Example: Checking and changing negative values to positive ones.

n = -100 IF SGN(n) = -1 THEN n = ABS(n) PRINT n

100


See also:



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