Method: Math#sqrt

Defined in:
math.c

#sqrt(x) ⇒ Float (private)

Returns the principal (non-negative) square root of x.

  • Domain: [0, INFINITY].

  • Range: [0, INFINITY].

Examples:

sqrt(0.0)      # => 0.0
sqrt(0.5)      # => 0.7071067811865476
sqrt(1.0)      # => 1.0
sqrt(2.0)      # => 1.4142135623730951
sqrt(4.0)      # => 2.0
sqrt(9.0)      # => 3.0
sqrt(INFINITY) # => Infinity



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# File 'math.c', line 673

static VALUE
math_sqrt(VALUE unused_obj, VALUE x)
{
    return rb_math_sqrt(x);
}