|CASIN(3)||Linux Programmer's Manual||CASIN(3)|
NAMEcasin, casinf, casinl - complex arc sine
DESCRIPTIONThe casin() function calculates the complex arc sine of z. If y = casin(z), then z = csin(y). The real part of y is chosen in the interval [-pi/2,pi/2].
casin(z) = -i clog(iz + csqrt(1 - z * z))
VERSIONSThese functions first appeared in glibc in version 2.1.
SEE ALSOclog(3), csin(3), complex(7)
COLOPHONThis page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.