NAME | SYNOPSIS | DESCRIPTION | VERSIONS | CONFORMING TO | SEE ALSO | COLOPHON

The Linux Programming Interface

CASINH(3)                 Linux Programmer's Manual                CASINH(3)

NAME         top

       casinh, casinhf, casinhl - complex arc sine hyperbolic

SYNOPSIS         top

       #include <complex.h>

       double complex casinh(double complex z);
       float complex casinhf(float complex z);
       long double complex casinhl(long double complex z);

       Link with -lm.

DESCRIPTION         top

       The 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].

       One has:

           casinh(z) = clog(z + csqrt(z * z + 1))

VERSIONS         top

       These functions first appeared in glibc in version 2.1.

CONFORMING TO         top

       C99.

SEE ALSO         top

       asinh(3), cabs(3), cimag(3), csinh(3), complex(7)

COLOPHON         top

       This page is part of release 3.51 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/.

                                 2008-08-11                        CASINH(3)

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