casinhl

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CASINH(3)		    complex math routines		    CASINH(3)



NAME
       casinh, casinhf, casinhl - complex arc sine hyperbolic

SYNOPSIS
       #include <complex.h>

       double complex casinh(double complex z);

       float complex casinhf(float complex double z);

       long double complex casinhl(long double complex z);


DESCRIPTION
       The  casinh()  function	calculates  the complex asinh().  If y = cas-
       inh(z), then z = csinh(y).  The imaginary part of y is chosen  in  the
       interval [-pi/2*i,pi/2*i].

       One has casinh(z) = clog(z+csqrt(z*z+1)).

CONFORMING TO
       C99

SEE ALSO
       cabs(3), cimag(3), asinh(3)



				  2002-07-28			    CASINH(3)