tree bf748705db0da48a0dc8c08989184bcb888861fd
parent 6af1433cb50af7423a1a69afc24c098af9c76bb1
author Michael Figurnov <mfigurnov@google.com> 1527777293 +0100
committer Michael Figurnov <mfigurnov@google.com> 1527777293 +0100

Exponentially scaled modified Bessel functions of order zero and one.

The functions are conventionally called i0e and i1e. The exponentially scaled version is more numerically stable. The standard Bessel functions can be obtained as i0(x) = exp(|x|) i0e(x)

The code is ported from Cephes and tested against SciPy.