cabs, cabsf, cabsl

Retrieves the absolute value of a complex number.

Syntax

double cabs(
   _Dcomplex z
);
float cabs(
   _Fcomplex z
);  // C++ only
long double cabs(
   _Lcomplex z
);  // C++ only
float cabsf(
   _Fcomplex z
);
long double cabsl(
   _Lcomplex z
);

Parameters

z
A complex number.

Return value

The absolute value of z.

Remarks

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

Requirements

Routine	C header	C++ header
cabs, cabsf, cabsl	<complex.h>	<ccomplex>

For more compatibility information, see Compatibility.

See also

Alphabetical function reference
norm, normf, norml
creal, crealf, creall
cproj, cprojf, cprojl
conj, conjf, conjl
cimag, cimagf, cimagl
carg, cargf, cargl