cc [ flags ] -I/usr/local/include file(s) -L/usr/local/lib -lmcw [ ... ] #include <mathcw.h> #include <complexcw.h> extern float complex catanf (float complex z); extern double complex catan (double complex z); extern long double complex catanl (long double complex z); extern __float80 complex catanw (__float80 complex z); extern __float128 complex catanq (__float128 complex z); extern long_long_double complex catanll (long_long_double complex z); extern decimal_float complex catandf (decimal_float complex z); extern decimal_double complex catand (decimal_double complex z); extern decimal_long_double complex catandl (decimal_long_double complex z); extern decimal_long_long_double complex catandll (decimal_long_long_double complex z);
NB: Functions with prototypes containing underscores in type names may be available only with certain extended compilers.
The value of the complex argument z is unrestricted.
For real-valued arguments in the range [-Infinity,+Infinity], the real function range is [-pi/2,+pi/2].
When compiler support for complex types is lacking, consider using the cx family of functions instead.