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

15.3 saexspi - Half-Cycle Arcexsecant exs-1(x)/π

#include <msca.h> 
 
double saexspi (double x); 
float  saexspif(float x);

Given a value x this function computes the half-cycle arcexsecant, exs-1(x)/π .