erfc
Computes the complementary error function at x, equal to 1 - erf(x).
The complementary form is useful when erf(x) is close to 1, since computing 1 - erf(x) directly would lose precision. Computed via regularizedGammaQ for the positive branch.
Example:
erfc(0.0) // 1.0
erfc(2.0) // 0.0046... (the tail probability)
erf(2.0) + erfc(2.0) // 1.0Content copied to clipboard
Return
the complementary error function value at x, in the range 0, 2.
Parameters
x
the point at which to evaluate.