casin()

Computes the arc value of sine.

  #include <math.h> 
  double complex casin(double complex x); 
  float complex casinf(float complex x); 
  long double complex casinl(long double complex x); 

x

A complex value.

These functions return the arcsine of the argument x, in radians. If x is out of range then these functions set errno to EDOM and

  fpclassify(casin(x))
 

returns FP_NAN.

This facility may not be available on configurations of the EWL that run on platforms that do not have floating-point math capabilities.