NAME

       cacosh, cacoshf, cacoshl - complex arc hyperbolic cosine functions

SYNOPSIS

       #include <complex.h>

       double complex cacosh(double complex z);
       float complex cacoshf(float complex z);
       long double complex cacoshl(long double complex z);

DESCRIPTION

       These  functions  shall  compute the complex arc hyperbolic cosine of z, with a branch cut at values less
       than 1 along the real axis.

RETURN VALUE

       These functions shall return the complex arc hyperbolic cosine value, in the range  of  a  half-strip  of
       non-negative values along the real axis and in the interval [-ipi, +ipi] along the imaginary axis.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       ccosh() , the Base Definitions volume of IEEE Std 1003.1-2001, <complex.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition,
       Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open  Group  Base
       Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers,
       Inc and The Open Group. In the event of any discrepancy between this version and the  original  IEEE  and
       The  Open  Group  Standard,  the  original  IEEE and The Open Group Standard is the referee document. The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .