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    Sqrt

    Calculate the square root of a value.

    Declaration

    Source position: mathh.inc line 122

    function Sqrt(d: ValReal) : ValReal;

    Description

    Sqrt returns the square root of its argument X, which must be positive.

    Errors

    If X is negative, then a run-time error is generated.

    See also

    Name Description
    Sqr Calculate the square of a value.
    Ln Calculate logarithm.
    Exp Exponentiate.

    Example

    Program Example66;

{ Program to demonstrate the Sqrt function. }

begin
  Writeln (Sqrt(4):0:3); { Prints 2.000 }
  Writeln (Sqrt(2):0:3); { Prints 1.414 }
end.