NAME
cacosh, cacoshf,
cacoshl —
complex inverse hyperbolic
cosine
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
The
cacosh(),
cacoshf()
and
cacoshl()
functions compute the complex inverse hyperbolic cosine of
z.
For all complex floating-point numbers z,
cacosh(z) = i acos(z).
RETURN VALUES
The cacosh(),
cacoshf() and cacoshl()
functions return the complex inverse hyperbolic cosine of
z with imaginary part in the interval [-Pi, Pi], and
non-negative real part.
SEE ALSO
STANDARDS
The cacosh(),
cacoshf() and cacoshl()
functions conform to ISO/IEC 9899:1999
(“ISO C99”).