Compute the complex arc sine
#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.
The complex arc sine of z, in the range of a strip unbounded along the imaginary axis and in the interval [−π/2; +π/2] along the real axis.
Errors and special cases are handled as if the operation were implemented as -i * casinh(i * z).
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | No |
Thread | Yes |