cabs(3)                    Library Functions Manual                    cabs(3)

NAME
       cabs, cabsf, cabsl - absolute value of a complex number

LIBRARY
       Math library (libm, -lm)

SYNOPSIS
       #include <complex.h>

       double cabs(double complex z);
       float cabsf(float complex z);
       long double cabsl(long double complex z);

DESCRIPTION
       These functions return the absolute value of the complex number z.  The
       result is a real number.

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(7).

       +--------------------------------------------+---------------+---------+
       |Interface                                   | Attribute     | Value   |
       +--------------------------------------------+---------------+---------+
       |cabs (), cabsf (), cabsl ()                 | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+
STANDARDS
       C11, POSIX.1-2008.

HISTORY
       glibc 2.1.  C99, POSIX.1-2001.

NOTES
       The function is actually an alias for hypot(a, b) (or, equivalently,
       sqrt(a*a + b*b)).

SEE ALSO
       abs(3), cimag(3), hypot(3), complex(7)

Linux man-pages 6.7               2023-10-31                           cabs(3)