catan
, catanf
, catanl
Retrieves the arctangent of a complex number with branch cuts outside the interval [-1; +1] along the imaginary axis.
Syntax
_Dcomplex catan( _Dcomplex z );
_Fcomplex catanf( _Fcomplex z );
_Lcomplex catanl( _Lcomplex z );
_Fcomplex catan( _Fcomplex z ); // C++ only
_Lcomplex catan( _Lcomplex z ); // C++ only
Parameters
z
A complex number that represents an angle, in radians.
Return value
The arctangent of z
, in radians. The result is unbounded along the imaginary axis, and in the interval [-π/2; +π/2] along the real axis.
Remarks
Because C++ allows overloading, you can call overloads of catan
that take and return _Fcomplex
and _Lcomplex
values. In a C program, catan
always takes and returns a _Dcomplex
value.
Requirements
Routine | C header | C++ header |
---|---|---|
catan , catanf , catanl |
<complex.h> | <ccomplex> |
For more compatibility information, see Compatibility.
See also
Alphabetical function reference
catanh
, catanhf
, catanhl
ctanh
, ctanhf
, ctanhl
csinh
, csinhf
, csinhl
casinh
, casinhf
, casinhl
ccosh
, ccoshf
, ccoshl
cacosh
, cacoshf
, cacoshl
cacos
, cacosf
, cacosl
ctan
, ctanf
, ctanl
csin
, csinf
, csinl
casin
, casinf
, casinl
ccos
, ccosf
, ccosl
csqrt
, csqrtf
, csqrtl
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