X-Hacker.org- Fast Library For Clipper 3.02 Reference

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    Factorial()

         Returns a number factorial

    Syntax:

         Factorial( nNumber ) -> nFactorial

         nNumber : The number to calculate the factorial from.

    Description:

         Calculates a number factorial that has to be 0 or bigger than 0.

    Return:

         The specified number factorial or Nil if negative number.

    Example:

         Factorial( 4 )    //  24

See Also: Exponent() Sum()

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