cabsf, cabs, cabsl

 

C

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Complex number arithmetic

Types and the imaginary constant
complex Complex_I CMPLX	imaginary Imaginary_I I
Manipulation
cimag creal carg	conj cproj
Power and exponential functions
cexp clog	cpow csqrt
Trigonometric functions
ccos csin ctan	cacos casin catan
Hyperbolic functions
ccosh csinh ctanh	cacosh casinh catanh

 

Defined in header <complex.h>
float       cabsf( float complex z );		(since C99)
double      cabs( double complex z );		(since C99)
long double cabsl( long double complex z );		(since C99)

Computes the complex absolute value of z.

Parameters

z

-

complex argument

Return value

The complex absolute value of z.

Example

Run this code

#include <stdio.h>
#include <complex.h>
 
int main(void)
{
    double x = cabs(1.0 + 2.0*I);
    printf("%f\n", x);
 
    return 0;
}

Output:

2.236068

See also

cargcargfcargl (C99)(C99)(C99)	computes the phase angle of a complex number (function)
abslabsllabs (C99)	computes absolute value of an integral value (|x|) (function)
fabsfabsffabsl (C99)(C99)	computes absolute value of a floating-point value (|x|) (function)
hypothypotfhypotl (C99)(C99)(C99)	computes square root of the sum of the squares of two given numbers (√x2 +y2 ) (function)
C++ documentation for abs