Name
sqrt — Return the square root of a number
Usage
Float.sqrt(num)
num
Description
Returns the square root of num. Some
WMLScript interpreters return only an approximation. Returns
invalid if num
can’t be converted to floating point or if
num is negative.
Examples
Float.sqrt(4.0)
returns floating-point 2.0
Float.sqrt(1.0)
returns floating-point 1.0
Float.sqrt(0.0)
returns floating-point 0.0
Float.sqrt(-1.0)
returns invalid
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