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.

VERSIONS

       These functions were added in glibc 2.1.

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

       C99, POSIX.1-2001, POSIX.1-2008.

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)