End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Float#to_f

float.to_f → self

# File tmp/rubies/ruby-3.1.3/numeric.rb, line 261
def to_f
  return self
end

Since float is already a Float, returns self.

See also #to_d #to_i #round #to_int also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0