We read every piece of feedback, and take your input very seriously.
To see all available qualifiers, see our documentation.
sqrt - Square root
float sqrt( float $x)
sqrt() computes the square root of x.
x - The number to process. It can be a scalar or an array.
The square root of x or NAN for negative numbers. If x is an array, the return value will also be an array.
1.0 and above.