ctan, ctanf, ctanl

Article
08/03/2021
2 minutes to read

Retrieves the tangent of a complex number.

Syntax

_Dcomplex ctan(
   _Dcomplex z
);
_Fcomplex ctan(
   _Fcomplex z
);  // C++ only
_Lcomplex ctan(
   _Lcomplex z
);  // C++ only
_Fcomplex ctanf(
   _Fcomplex z
);
_Lcomplex ctanl(
   _Lcomplex z
);

Parameters

z
A complex number that represents the angle, in radians.

Return Value

The tangent of z.

Input	SEH Exception	_matherr Exception
± ∞, QNAN, IND	none	_DOMAIN
± ∞ (tan, tanf)	INVALID	_DOMAIN

Remarks

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

Requirements

Routine	C header	C++ header
ctan, ctanf, ctanl	<complex.h>	<ccomplex>

For more compatibility information, see Compatibility.