Math Scalar Library
Programming Reference Manual C/C++
Version 1.1 DD-00003-011

22.13 seinst2 - Einstein function E2(x)

#include <msca.h> 
 
double seinst2 (double x); 
float  seinst2f(float x);

Given a value x this function computes the second Einstein function

E (x)=--x--
 2    ex-1