SIGN()
 To return the sign of a number.
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 Syntax

      SIGN(<nValue>) -> nSign

 Arguments

      <nValue> is a numeric value.

 Returns

      SIGN() returns the sign of a value.

      For a positive value, SIGN() returns +1.
      For a negative value, SIGN() returns -1.
      For zero, SIGN() returns 0.

 Description

      SIGN() is used to determine if a number is positive, negative, or
      neutral (zero).

 Examples

      ? Str( SIGN( 5), 2, 0)  // returns  1
      ? Str( SIGN(-5), 2, 0)  // returns -1
      ? Str( SIGN( 0), 2, 0)  // returns  0

 Files: CALC.LIB

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