norm, normf, norml

Retrieves the squared magnitude of a complex number.


double norm( _Dcomplex z );
float normf( _Fcomplex z );
long double norml( _Lcomplex z );
float norm( _Fcomplex z );  // C++ only
long double norm( _Lcomplex z );  // C++ only


A complex number.

Return value

The squared magnitude of z.


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


Routine C header C++ header
norm, normf, norml <complex.h> <complex.h>

The _Fcomplex, _Dcomplex, and _Lcomplex types are Microsoft-specific equivalents of the unimplemented native C99 types float _Complex, double _Complex, and long double _Complex, respectively. For more compatibility information, see Compatibility.

See also

Alphabetical function reference
creal, crealf, creall
cproj, cprojf, cprojl
conj, conjf, conjl
cimag, cimagf, cimagl
carg, cargf, cargl
cabs, cabsf, cabsl