| sqrt | square root function |
| Syntax | sqrt ( r : real ) : real
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| Description | The sqrt function is used to find the square root of a number. For example, sqrt (4) is 2.
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| 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
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| 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.
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| See also | See also predefined unit Math.
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