Math Scalar Library
Programming Reference Manual Fortran
Version 1.1 DD-00003-111

19.3 stancpi - Cardinal Normalized Tangent tancπ(x)

function stancpi (x) 
function stancpif(x)

Given a value x this function computes the cardinal normalized tangent of x , tanc (x)= tan(πx)
   π      πx   .