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Computes the scaled complementary error function exp(x**) * erfc(x).


[1] M. Shepherd and J. Laframboise, Chebyshev approximation of (1 + 2 * x) * exp(x**2) * erfc(x)

x A Tensor with type float32 or float64.
name A name for the operation (optional).

erfcx erfcx(x) evaluated at x. A Tensor with the same shape and same dtype as x.