[Octave-bug-tracker] [bug #59615] feature request for sinpi, cospi, yyaxis functions

[Carlo de Falco]

Follow-up Comment #2, bug #59615 (project octave):

Just for reference, it seems that R implements these functions
by wrapping special functions that are available on some systems.
While on other systems it falls back to using 

sin(X * PI) or cos (X * PI)

https://stat.ethz.ch/R-manual/R-devel/library/base/html/Trig.html

For example on my system (mac OS 10.14.6) the following
works


#include <cmath>
#include <iostream>
int
main ()
{
  double x =0;
  std::cin >> x;
  std::cout << __sinpi (x) << std::endl;

  return 0;
}





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