1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
NAME
d2r - convert degrees to radians
SYNOPSIS
d2r(x [,eps])
TYPES
x number (real or complex)
eps 0 < real < 1, defaults to epsilon()
return number
DESCRIPTION
Given x degrees, return the equivalent number of radians.
The eps controls the precision of the calculated internal
constant pi / 180.
EXAMPLE
; print d2r(45), d2r(180), d2r(30)
~0.78539816339744830962 3.14159265358979323846 ~0.52359877559829887308
; print d2r(3i+2)
~0.03490658503988659154+~0.05235987755982988731i
; print sin(d2r(30)), cos(d2r(60)), tan(d2r(45))
0.5 0.5 1
LIMITS
0 < eps < 1
LINK LIBRARY
NUMBER *qpidiv180(NUMBER *eps)
SEE ALSO
r2d, g2r, r2g, d2g, g2d,
sin, cos, tan, sec, csc, cot, epsilon
## Copyright (C) 2021,2023 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.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## Under source code control: 2021/09/07 12:04:28
## File existed as early as: 2021
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
|
