cproj, cprojf, cprojl

Artikel
08/03/2021
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Retrieves the projection of a complex number on the Reimann sphere.

Syntax

_Dcomplex cproj(
   _Dcomplex z
);
_Fcomplex cproj(
   _Fcomplex z
);  // C++ only
_Lcomplex cproj(
   _Lcomplex z
);  // C++ only
_Fcomplex cprojf(
   _Fcomplex z
);
_Lcomplex cprojl(
   _Lcomplex z
);
#define cproj(X) // Requires C11 or higher

Parameters

z
A complex number.

Return Value

The projection of z on the Reimann sphere.

Remarks

Because C++ allows overloading, you can call overloads of cproj that take and return _Fcomplex and _Lcomplex values. In a C program, unless you're using the <tgmath.h> macro to call this function, cproj always takes and returns a _Dcomplex value.

If you use the <tgmath.h> cproj() macro, the type of the argument determines which version of the function is selected. See Type-generic math for details.

Requirements

Routine	C header	C++ header
cproj, cprojf, cprojl	<complex.h>	<ccomplex>
cproj macro	<tgmath.h>

For more compatibility information, see Compatibility.