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

class method

Math.erfc

Math.erfc(x) → Float

Calculates the complementary error function of x.

Domain: (-INFINITY, INFINITY)

Codomain: (0, 2)

Example
Math.erfc(0) #=> 1.0
See also .erf .exp .cosh .frexp also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0