CASINHSection: Linux Programmer's Manual (3)
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NAMEcasinh, casinhf, casinhl - complex arc sine hyperbolic
double complex casinh(double complex z);
float complex casinhf(float complex z);
long double complex casinhl(long double complex z);
DESCRIPTIONThe casinh() function calculates the complex arc hyperbolic sine of z. If y = casinh(z), then z = csinh(y). The imaginary part of y is chosen in the interval [-pi/2,pi/2].
casinh(z) = clog(z + csqrt(z * z + 1))
VERSIONSThese functions first appeared in glibc in version 2.1.
SEE ALSOasinh(3), cabs(3), cimag(3), complex(7)
COLOPHONThis page is part of release 3.21 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/.