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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
//
// GENERATED FILE
//
use super::*;
use crate::SpiceContext;
use f2rust_std::*;
pub const LBCELL: i32 = -5;
/// Contract the intervals of a DP window
///
/// Contract each of the intervals of a double precision window.
///
/// # Required Reading
///
/// * [WINDOWS](crate::required_reading::windows)
///
/// # Brief I/O
///
/// ```text
/// VARIABLE I/O DESCRIPTION
/// -------- --- --------------------------------------------------
/// LEFT I Amount added to each left endpoint.
/// RIGHT I Amount subtracted from each right endpoint.
/// WINDOW I-O Window to be contracted.
/// ```
///
/// # Detailed Input
///
/// ```text
/// LEFT is the amount to be added to the left endpoint of each
/// interval in the input window. The amount LEFT is signed.
///
/// RIGHT is the amount to be subtracted from the right endpoint of
/// each interval in the window. The amount RIGHT is signed.
///
/// WINDOW on input, is a window containing zero or more
/// intervals.
/// ```
///
/// # Detailed Output
///
/// ```text
/// WINDOW on output, is the original window with each of its
/// intervals contracted by LEFT units on the left and
/// RIGHT units on the right.
/// ```
///
/// # Exceptions
///
/// ```text
/// 1) The cardinality of the input WINDOW must be even. Left
/// endpoints of stored intervals must be strictly greater than
/// preceding right endpoints. Right endpoints must be greater
/// than or equal to corresponding left endpoints. Invalid window
/// data are not diagnosed by this routine and may lead to
/// unpredictable results.
/// ```
///
/// # Particulars
///
/// ```text
/// This routine contracts (shortens) each of the intervals in
/// the input window. The adjustments are not necessarily symmetric.
/// That is, LEFT units are added to the left endpoint of each
/// interval, and RIGHT units are subtracted from the right endpoint
/// of each interval, where LEFT and RIGHT may be different.
///
/// Intervals are dropped when they are contracted by amounts
/// greater than their measures.
/// ```
///
/// # Examples
///
/// ```text
/// Let WINDOW contain the intervals
///
/// [ 1, 3 ] [ 7, 11 ] [ 23, 27 ] [ 29, 29 ]
///
/// Then the following series of calls
///
/// CALL WNCOND ( 2, 1, WINDOW ) (1)
/// CALL WNCOND ( -2, 2, WINDOW ) (2)
/// CALL WNCOND ( -2, -1, WINDOW ) (3)
///
/// produces the following series of windows
///
/// [ 9, 10 ] [ 25, 26 ] (1)
/// [ 7, 8 ] [ 23, 24 ] (2)
/// [ 5, 9 ] [ 21, 25 ] (3)
///
/// Note that intervals may be "contracted" by negative amounts.
/// In the example above, the second call shifts each interval to
/// the left, while the third call undoes the effect of the first
/// call (without restoring the destroyed intervals).
///
/// Note also that the third call is exactly equivalent to the
/// call
///
/// CALL WNEXPD ( 2, 1, WINDOW )
/// ```
///
/// # Author and Institution
///
/// ```text
/// N.J. Bachman (JPL)
/// J. Diaz del Rio (ODC Space)
/// H.A. Neilan (JPL)
/// W.L. Taber (JPL)
/// I.M. Underwood (JPL)
/// ```
///
/// # Version
///
/// ```text
/// - SPICELIB Version 1.1.0, 06-JUL-2021 (JDR) (NJB)
///
/// Added IMPLICIT NONE statement.
///
/// Edited the header to comply with NAIF standard. Removed
/// unnecessary $Revisions section.
///
/// Added entry #1 in $Exceptions section. Extended LEFT and RIGHT
/// description in $Detailed_Input.
///
/// - SPICELIB Version 1.0.1, 10-MAR-1992 (WLT)
///
/// Comment section for permuted index source lines was added
/// following the header.
///
/// - SPICELIB Version 1.0.0, 31-JAN-1990 (WLT) (IMU) (HAN)
/// ```
pub fn wncond(
ctx: &mut SpiceContext,
left: f64,
right: f64,
window: &mut [f64],
) -> crate::Result<()> {
WNCOND(left, right, window, ctx.raw_context())?;
ctx.handle_errors()?;
Ok(())
}
//$Procedure WNCOND ( Contract the intervals of a DP window )
pub fn WNCOND(
LEFT: f64,
RIGHT: f64,
WINDOW: &mut [f64],
ctx: &mut Context,
) -> f2rust_std::Result<()> {
let mut WINDOW = DummyArrayMut::new(WINDOW, LBCELL..);
//
// Spicelib functions
//
//
// Standard SPICE error handling.
//
if RETURN(ctx) {
return Ok(());
} else {
CHKIN(b"WNCOND", ctx)?;
}
//
// This is just negative expansion.
//
WNEXPD(-LEFT, -RIGHT, WINDOW.as_slice_mut(), ctx)?;
CHKOUT(b"WNCOND", ctx)?;
Ok(())
}