ctan-ctanf-ctanl.md

title	ctan, ctanf, ctanl
description	API reference for ctan, ctanf, and ctanl; which retrieve the tangent of a complex number.
ms.date	11/04/2016
api_name	ctan ctanf ctanl
api_location	msvcrt.dll msvcr80.dll msvcr90.dll msvcr100.dll msvcr100_clr0400.dll msvcr110.dll msvcr110_clr0400.dll msvcr120.dll msvcr120_clr0400.dll ucrtbase.dll api-ms-win-crt-math-l1-1-0.dll
api_type	DLLExport
topic_type	apiref
f1_keywords	ctan ctanf ctanl complex/ctan complex/ctanf complex/ctanl
helpviewer_keywords	ctan function ctanf function ctanl function

ctan, ctanf, ctanl

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
± INF, QNaN, IND	none	_DOMAIN
± INF (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.

See also

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