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58 lines
1.7 KiB
Plaintext
58 lines
1.7 KiB
Plaintext
NAME
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r2d - convert radians to degrees
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SYNOPSIS
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r2d(x [,eps])
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TYPES
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x number (real or complex)
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eps 0 < real < 1, defaults to epsilon()
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return number
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DESCRIPTION
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Given x radians, return the equivalent number of degrees.
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The eps controls the precision of the calculated internal
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constant pi / 180.
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EXAMPLE
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; pi = pi(1e-20)
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; print r2d(pi), r2d(pi/3), r2d(2*pi)
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180 60 360
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; print r2d(pi+4i), r2d(pi/3 + 1i*pi), r2d(pi/5 + 5i*pi)
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180+~229.18311805232928350739i 60+180, 36+900i
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LIMITS
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0 < eps < 1
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LINK LIBRARY
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NUMBER *qpidiv180(NUMBER *eps)
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SEE ALSO
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d2r, g2r, r2g, d2g, g2d,
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sin, cos, tan, sec, csc, cot, epsilon
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## Copyright (C) 2021,2023 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: 2021/09/07 12:04:28
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## File existed as early as: 2021
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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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