Difference between revisions of "SGN"

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''Example:'' Checking and changing negative values to positive ones.
 
''Example:'' Checking and changing negative values to positive ones.
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{{CodeStart}}
  
: n = -100
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n = -100
: IF SGN(n) = -1 THEN n = [[ABS]](n)
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IF SGN(n) = -1 THEN n = [[ABS]](n)
: PRINT n
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PRINT n
  
''Screen result:'' 100
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{{CodeEnd}}
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{{OutputStart}}
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100
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{{OutputEnd}}
  
  
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''See also:''
  
''See also:'' [[ABS]], [[_DEFINE]], [[_UNSIGNED]], [[Mathematical Operations]]
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* [[ABS]]
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* [[_DEFINE]], [[_UNSIGNED]]  
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* [[Mathematical Operations]]
  
  
  
==Navigation:==
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{{PageNavigation}}
 
 
[[Keyword_Reference_-_Alphabetical|Go to Keyword Reference - Alphabetical]]
 
 
 
[[Keyword Reference - By usage|Go to Keyword Reference - By usage]]
 

Revision as of 10:22, 18 September 2010

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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