NAME arg - argument (the angle or phase) of a complex number SYNOPSIS arg(x [,eps]) TYPES x number eps nonzero real, defaults to epsilon() return real DESCRIPTION Returns the argument of x to the nearest or next to nearest multiple of eps; the error will be less in absolute value than 0.75 * abs(eps), but usually less than 0.5 * abs(eps). EXAMPLE ; print arg(2), arg(2+3i, 1e-5), arg(2+3i, 1e-10), arg(2+3i, 1e-20) 0 .98279 .9827937232 .98279372324732906799 ; pi = pi(1e-10); deg = pi/180; eps = deg/10000 ; print arg(2+3i, eps)/deg, arg(-1 +1i, eps)/deg, arg(-1 - 1i,eps)/deg 56.3099 135 -135 LIMITS none LINK LIBRARY none SEE ALSO conj, im, polar, re ## Copyright (C) 1999 Landon Curt Noll ## ## Calc is open software; you can redistribute it and/or modify it under ## the terms of the version 2.1 of the GNU Lesser General Public License ## as published by the Free Software Foundation. ## ## Calc is distributed in the hope that it will be useful, but WITHOUT ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General ## Public License for more details. ## ## A copy of version 2.1 of the GNU Lesser General Public License is ## distributed with calc under the filename COPYING-LGPL. You should have ## received a copy with calc; if not, write to Free Software Foundation, Inc. ## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. ## ## @(#) $Revision: 29.3 $ ## @(#) $Id: arg,v 29.3 2006/05/07 07:25:46 chongo Exp $ ## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/arg,v $ ## ## Under source code control: 1994/09/25 20:22:31 ## File existed as early as: 1994 ## ## chongo /\oo/\ http://www.isthe.com/chongo/ ## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
