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32 lines
669 B
Plaintext
32 lines
669 B
Plaintext
The '''SGN''' function returns the sign of a number value.
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{{PageSyntax}}
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:: sign% = SGN(value)
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* Returns -1 when a sign is negative, 0 when a value is zero or 1 when a value is positive.
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* Used to hold the original sign of a number.
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* '''QB64''' allows programs to return only [[_UNSIGNED]] variable values using a [[_DEFINE]] statement.
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''Example:'' Checking and changing negative values to positive ones.
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{{CodeStart}}
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n = -100
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{{Cl|IF...THEN|IF}} {{Cl|SGN}}(n) = -1 THEN n = {{Cl|ABS}}(n)
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PRINT n '' ''
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{{CodeEnd}}
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{{OutputStart}} 100
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{{OutputEnd}}
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''See also:''
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* [[ABS]]
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* [[_DEFINE]], [[_UNSIGNED]]
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* [[Mathematical Operations]]
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{{PageNavigation}} |