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Revision as of 20:52, 28 September 2009 by imported>Clippy
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The SGN function returns the sign of a number value.

Syntax: sign% = SGN(value)

  • Returns -1 when a sign is negative.
  • Returns 0 when a value is zero.
  • Returns 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)

Screen result: 100

See also: ABS, _DEFINE, _UNSIGNED, Mathematical Operations


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