1 /*******************************************************************************
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 *
21 * Copyright 2014 QLogic Corporation
22 * The contents of this file are subject to the terms of the
23 * QLogic End User License (the "License").
24 * You may not use this file except in compliance with the License.
25 *
26 * You can obtain a copy of the License at
27 * http://www.qlogic.com/Resources/Documents/DriverDownloadHelp/
28 * QLogic_End_User_Software_License.txt
29 * See the License for the specific language governing permissions
30 * and limitations under the License.
31 *
32 *
33 * Module Description:
34 * This file should include pure ANSI C defines
35 *
36 * History:
37 * 25/04/10 Shay Haroush Inception.
38 ******************************************************************************/
39 #ifndef CYCLIC_OPERATIONS
40 #define CYCLIC_OPERATIONS
41
42 /******** Cyclic Operators Macros ********/
43
44 #define _ABS_DIFF(x, y) ((x) > (y) ? (x) - (y) : (y) - (x))
45
_cyclic_lt(u32_t x,u32_t y,u32_t d)46 static __inline u8_t _cyclic_lt(u32_t x, u32_t y, u32_t d)
47 {
48 u32_t diff = _ABS_DIFF(x,y);
49 return (diff < d) ? x < y : x > y;
50 }
51
_cyclic_le(u32_t x,u32_t y,u32_t d)52 static __inline u8_t _cyclic_le(u32_t x, u32_t y, u32_t d)
53 {
54 u32_t diff = _ABS_DIFF(x,y);
55 return (diff < d) ? x <= y : x >= y;
56 }
57
58 #define CYCLIC_LT_8(x, y) (_cyclic_lt(x, y, 128))
59 #define CYCLIC_LT_16(x, y) (_cyclic_lt(x, y, 32768))
60 #define CYCLIC_LT_24(x, y) (_cyclic_lt(x, y, 8388608))
61 #define CYCLIC_LT_32(x, y) (_cyclic_lt(x, y, 2147483648))
62
63 #define CYCLIC_LE_8(x, y) (_cyclic_le(x, y, 128))
64 #define CYCLIC_LE_16(x, y) (_cyclic_le(x, y, 32768))
65 #define CYCLIC_LE_24(x, y) (_cyclic_le(x, y, 8388608))
66 #define CYCLIC_LE_32(x, y) (_cyclic_le(x, y, 2147483648))
67
68 #define CYCLIC_GT_8(x, y) (!(CYCLIC_LE_8(x, y)))
69 #define CYCLIC_GT_16(x, y) (!(CYCLIC_LE_16(x, y)))
70 #define CYCLIC_GT_24(x, y) (!(CYCLIC_LE_24(x, y)))
71 #define CYCLIC_GT_32(x, y) (!(CYCLIC_LE_32(x, y)))
72
73 #define CYCLIC_GE_8(x, y) (!(CYCLIC_LT_8(x, y)))
74 #define CYCLIC_GE_16(x, y) (!(CYCLIC_LT_16(x, y)))
75 #define CYCLIC_GE_24(x, y) (!(CYCLIC_LT_24(x, y)))
76 #define CYCLIC_GE_32(x, y) (!(CYCLIC_LT_32(x, y)))
77
78 // bits = number of bits in x, y (i.e., sizeof_x)
79 #define CYCLIC_LT_BITS(x, y, bits) _cyclic_lt(x, y, 1 << ((bits)-1))
80 #define CYCLIC_LE_BITS(x, y, bits) _cyclic_le(x, y, 1 << ((bits)-1))
81 #define CYCLIC_GT_BITS(x, y, bits) (!(CYCLIC_LE_BITS(x, y, bits)))
82 #define CYCLIC_GE_BITS(x, y, bits) (!(CYCLIC_LT_BITS(x, y, bits)))
83
84 /******** End Cyclic Operators Macros ********/
85
86 #endif // CYCLIC_OPERATIONS
87