summaryrefslogtreecommitdiff
path: root/support/dktools/dk4pxbit.c
blob: 36b815e59a90bfbee175816edd3c5a46d3669f14 (plain)
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
/*
Copyright (C) 2017-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/

/*
	WARNING: This file was generated by the dkct program (see
	http://dktools.sourceforge.net/ for details).
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4pxbit.ctr
*/

/**	@file dk4pxbit.c The dk4pxbit module.
*/


#line 77 "dk4pxbit.ctr"

#include "dk4conf.h"
#ifndef	DK4PXBIT_H_INCLUDED
#include "dk4pxbit.h"
#endif





#line 86 "dk4pxbit.ctr"



/**	Bit number values.
*/
static dk4_px_t	dk4pxbit_values[] = {
	0x0001U, 0x0002U, 0x0004U, 0x0008U, 0x0010U, 0x0020U, 0x0040U, 0x0080U,
	0x0100U, 0x0200U, 0x0400U, 0x0800U, 0x1000U, 0x2000U, 0x4000U, 0x8000U
};


/**	Maxima values.
*/
static dk4_px_t dk4pxbit_maxima[] = {
	0x0001U, 0x0003U, 0x0007U, 0x000FU, 0x001FU, 0x003FU, 0x007FU, 0x00FFU,
	0x01FFU, 0x03FFU, 0x07FFU, 0x0FFFU, 0x1FFFU, 0x3FFFU, 0x7FFFU, 0xFFFFU
};



dk4_px_t
dk4pxbit_get_bit(size_t bitno)
{
	if ((sizeof(dk4pxbit_values)/sizeof(dk4_px_t)) > bitno) {
		return (dk4pxbit_values[bitno]);
	}
	return ((dk4_px_t)0U);
}



dk4_px_t
dk4pxbit_get_max(size_t bitno)
{
	dk4_px_t	back	= 0;
	

#line 122 "dk4pxbit.ctr"
	if (((sizeof(dk4pxbit_maxima)/sizeof(dk4_px_t)) > bitno) && (0 < bitno)) {
		back = dk4pxbit_maxima[bitno - 1];
	}
	

#line 126 "dk4pxbit.ctr"
	return back;
}



size_t
dk4pxbit_get_bitno(dk4_px_t maxval)
{
	size_t		 back	=	16;
	size_t		 i		=	15;
	int			 cc		=	 1;
	for (i = 15; ((i > 0) && (1 == cc)); i--) {
		if (dk4pxbit_maxima[i - 1] >= maxval) {
			back = i;
		}
		else {
			cc = 0;
		}
	}
	return back;
}




/* vim: set ai sw=4 ts=4 : */