casinh, casinhf, casinhl

Retrieves the inverse hyperbolic sine of a complex number, with branch cuts outside the interval [-i, +i] along the imaginary axis.


_Dcomplex casinh(
   _Dcomplex z
_Fcomplex casinh(
   _Fcomplex z
);  // C++ only
_Lcomplex casinh(
   _Lcomplex z
);  // C++ only
_Fcomplex casinhf(
   _Fcomplex z
_Lcomplex casinhl(
   _Lcomplex z


A complex number that represents an angle, in radians.

Return value

The inverse hyperbolic sine of z, in radians. The result is unbound along the real axis, and in the interval [-iπ/2, +iπ/2] along the imaginary axis.


Because C++ allows overloading, you can call overloads of casinh that take and return _Fcomplex and _Lcomplex values. In a C program, casinh always takes and returns a _Dcomplex value.


Routine C header C++ header
casinh, casinhf, casinhl <complex.h> <ccomplex>

For more compatibility information, see Compatibility.

See also

Alphabetical function reference
catanh, catanhf, catanhl
ctanh, ctanhf, ctanhl
catan, catanf, catanl
csinh, csinhf, csinhl
ccosh, ccoshf, ccoshl
cacosh, cacoshf, cacoshl
cacos, cacosf, cacosl
ctan, ctanf, ctanl
csin, csinf, csinl
casin, casinf, casinl
ccos, ccosf, ccosl
csqrt, csqrtf, csqrtl