cabs(), cabsf(), cabsl()

Compute the absolute value of a complex number

Synopsis:

#include <complex.h>

double cabs(double complex z);

float cabsf(float complex z);

long double cabsl(long double complex z);

Arguments:

z
The complex value that you want to get the absolute value of.

Library:

libm

Use the -l m option to qcc to link against this library.

Description:

These functions compute the absolute value of the complex number specified by z.

To check for error situations, use feclearexcept() and fetestexcept(). For example:

Returns:

The absolute value of z.

These functions raise FE_INEXACT if the FPU reports that the result can't be exactly represented as a floating-point number.

Classification:

ANSI, POSIX 1003.1

Safety:  
Cancellation point No
Interrupt handler No
Signal handler No
Thread Yes