k1e

Modified Bessel function, third kind, order one, exponentially scaled.

SYNOPSIS:

double x, y, k1e();
y = k1e(x);

DESCRIPTION:

Returns the exponentially scaled, modified Bessel function of the third kind of order one of the argument:

k1e(x) = exp(x) * k1(x).

ACCURACY:
Relative error:
arithmetic domain # trials peak rms
IEEE 0, 30 30000 7.8e-16 1.2e-16