c99 [ flag... ] file... –lm [ library... ] #include <complex.h> double complex casin(double complex z);
float complex casinf(float complex z);
long double complex casinl(long double complex z);
These functions compute the complex arc sine of z, with branch cuts outside the interval [ −1, +1 ] along the real axis.
These functions return the complex arc sine value, in the range of a strip mathematically unbounded along the imaginary axis and in the interval [ −??/2, +??/2 ] along the real axis.
No errors are defined.
See attributes(5) for descriptions of the following attributes: