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Revision as of 10:22, 18 September 2010 by (format)
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