sqrtsquare root function

Syntax   sqrt ( r : real ) : real

Description   The sqrt function is used to find the square root of a number. For example, sqrt (4) is 2.

Example   This program prints out the square roots of 1, 2, 3, up to 100.

        for i : 1 .. 100
            put "Square root of ", i, " is ", sqrt ( i )
        end for
Details   It is illegal to try to take the square root of a negative number. The result of sqrt is always positive or zero.

The opposite of a square root is the square. For example, the square of x is written is x**2.

See also   See also predefined unit Math.