casin, casinf, casinl — 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) ; |
Link with −lm.
The casin
() function
calculates the complex asin(). If y = casin(z), then z =
csin(y). The real part of y is chosen in the interval
[−pi/2,pi/2].
One has casin(z) = −i clog(iz + csqrt(1 − z * z)).