Difference between revisions of "SGN"

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::::''Syntax:'' sign% = SGN(value)
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{{PageSyntax}}
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:: sign% = SGN(value)
  
  
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''Example:'' Checking and changing negative values to positive ones.
 
''Example:'' Checking and changing negative values to positive ones.
 
{{CodeStart}}
 
{{CodeStart}}
 
 
n = -100
 
n = -100
 
IF SGN(n) = -1 THEN n = [[ABS]](n)
 
IF SGN(n) = -1 THEN n = [[ABS]](n)
PRINT n
+
PRINT n '' ''
 
 
 
{{CodeEnd}}
 
{{CodeEnd}}
 
{{OutputStart}}
 
{{OutputStart}}
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''See also:''  
 
''See also:''  
 
 
* [[ABS]]
 
* [[ABS]]
 
* [[_DEFINE]], [[_UNSIGNED]]  
 
* [[_DEFINE]], [[_UNSIGNED]]  
 
* [[Mathematical Operations]]
 
* [[Mathematical Operations]]
 
  
  
 
{{PageNavigation}}
 
{{PageNavigation}}

Revision as of 00:52, 10 May 2011

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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