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CACOSH(3)             DragonFly Library Functions Manual             CACOSH(3)

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

casinh(3), catanh(3)

STANDARDS

The cacosh(), cacoshf() and cacoshl() functions conform to ISO/IEC 9899:1999 (``ISO C99''). DragonFly 4.1 June 5, 2013 DragonFly 4.1

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