Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

Linux 2.6 - man page for carg (linux section 3)

CARG(3) 						     Linux Programmer's Manual							   CARG(3)

NAME
carg, cargf, cargl - calculate the argument
SYNOPSIS
#include <complex.h> double carg(double complex z); float cargf(float complex z); long double cargl(long double complex z); Link with -lm.
DESCRIPTION
A complex number can be described by two real coordinates. One may use rectangular coordinates and gets z = x + I * y where x = creal(z) and y = cimag(z). Or one may use polar coordinates and gets z = r * cexp(I * a) where r = cabs(z) is the "radius", the "modulus", the absolute value of z, and a = carg(z) is the "phase angle", the argument of z. One has: tan(carg(z)) = cimag(z) / creal(z)
RETURN VALUE
The return value is the range of [-pi,pi].
VERSIONS
These functions first appeared in glibc in version 2.1.
CONFORMING TO
C99.
SEE ALSO
cabs(3), complex(7)
COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2008-08-11 CARG(3)
All times are GMT -4. The time now is 07:05 PM.

Unix & Linux Forums Content Copyright 1993-2018. All Rights Reserved.