This file is indexed.

/usr/share/doc/libplplot11/examples/d/x05d.d is in libplplot-dev 5.9.9-2ubuntu2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

 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
// $Id: x05d.d 11684 2011-03-31 04:15:32Z airwin $
//
//      Histogram demo.
//

import std.math;
import plplot;

//--------------------------------------------------------------------------
// main
//
// Draws a histogram from sample data.
//--------------------------------------------------------------------------
int main( char[][] args )
{
    // Parse and process command line arguments
    plparseopts( args, PL_PARSE_FULL );

    // Initialize plplot
    plinit();

    // Fill up data points
    const int npts  = 2047;
    PLFLT     delta = 2.0 * PI / npts;
    PLFLT[npts] data;
    for ( size_t i = 0; i < npts; i++ )
        data[i] = sin( i * delta );

    plcol0( 1 );
    plhist( data, -1.1, 1.1, 44, PL_HIST_DEFAULT );
    plcol0( 2 );
    pllab( "#frValue", "#frFrequency",
        "#frPLplot Example 5 - Probability function of Oscillator" );

    plend();

    return 0;
}