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casinh (3)
CASINH(3) Linux Programmer's Manual 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 z);
long double complex casinhl(long double complex z);
Link with -lm.
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,pi/2].
One has casinh(z) = clog(z + csqrt(z * z + 1)).
CONFORMING TO
C99
SEE ALSO
asinh(3), cabs(3), cimag(3), complex(7)
2002-07-28 CASINH(3)
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