float sqrt(float value)
<vector> sqrt(<vector>value)
Returns the square root of value
. For vectors, this is done per-component.
Note
The square root of a negative number is defined to be zero.
To quote Edgar Rice Burroughs, Pirates of Venus: “I saw that argument was useless and said no more: there is no use arguing with a man who can multiply anything by the square root of minus one”
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