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56 lines
1.7 KiB
Plaintext
56 lines
1.7 KiB
Plaintext
NAME
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arg - argument (the angle or phase) of a complex number
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SYNOPSIS
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arg(x [,eps])
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TYPES
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x number
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eps nonzero real, defaults to epsilon()
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return real
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DESCRIPTION
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Returns the argument of x to the nearest or next to nearest multiple of
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eps; the error will be less in absolute value than 0.75 * abs(eps),
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but usually less than 0.5 * abs(eps).
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EXAMPLE
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; print arg(2), arg(2+3i, 1e-5), arg(2+3i, 1e-10), arg(2+3i, 1e-20)
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0 0.98279 0.9827937232 0.98279372324732906799
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; pi = pi(1e-10); deg = pi/180; eps = deg/10000
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; print arg(2+3i, eps)/deg, arg(-1 +1i, eps)/deg, arg(-1 - 1i,eps)/deg
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56.3099 135 -135
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LIMITS
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none
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LINK LIBRARY
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none
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SEE ALSO
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conj, im, polar, re
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## Copyright (C) 1999,2021 Landon Curt Noll
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##
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## Calc is open software; you can redistribute it and/or modify it under
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## the terms of the version 2.1 of the GNU Lesser General Public License
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## as published by the Free Software Foundation.
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##
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## Calc is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## Public License for more details.
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##
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## A copy of version 2.1 of the GNU Lesser General Public License is
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## distributed with calc under the filename COPYING-LGPL. You should have
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##
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## Under source code control: 1994/09/25 20:22:31
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## File existed as early as: 1994
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##
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## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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