creal, crealf, creall
Visual Studio 2015
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Retrieves the real part of a complex number.
double creal( _Dcomplex z ); float creal( _Fcomplex z ); // C++ only long double creal( _Lcomplex z ); // C++ only float crealf( _Fcomplex z ); long double creall( _Lcomplex z );
Parameters
z
A complex number.
The real part of z.
Because C++ allows overloading, you can call overloads of creal that take _Fcomplex or _Lcomplex values, and return float or long double values. In a C program, creal always takes a _Dcomplex value and returns a double value.
| Routine | C header | C++ header |
|---|---|---|
creal, crealf, creall | <complex.h> | <ccomplex> |
For more compatibility information, see Compatibility in the Introduction.
Alphabetical Function Reference
norm, normf, norml
cproj, cprojf, cprojl
conj, conjf, conjl
cimag, cimagf, cimagl
carg, cargf, cargl
cabs, cabsf, cabsl
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