cabs, cabsf, cabsl

Article
06/05/2017

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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 in the Introduction.

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