blob: 71215c41bad59b0a05bd273ec3e570f8e218988e (
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
|
#ifndef __BINARYCONST_H__
#define __BINARYCONST_H__
/* @file
*
* Macros for allowing binary constants in C.
* By Tom Torfs - donated to the public domain
*
* binaryconst.h was integrated into the Dillo project in April 2004, and
* presumably comes from the ancestor of the code found at
* http://cprog.tomsweb.net/binconst.txt
*/
#define HEX__(n) 0x##n##LU
/* 8-bit conversion function */
#define B8__(x) ((x&0x0000000FLU)?1:0) \
+((x&0x000000F0LU)?2:0) \
+((x&0x00000F00LU)?4:0) \
+((x&0x0000F000LU)?8:0) \
+((x&0x000F0000LU)?16:0) \
+((x&0x00F00000LU)?32:0) \
+((x&0x0F000000LU)?64:0) \
+((x&0xF0000000LU)?128:0)
/*
* *** USER MACROS ***
*/
/* for upto 8-bit binary constants */
#define B8(d) ((unsigned char)B8__(HEX__(d)))
/* for upto 16-bit binary constants, MSB first */
#define B16(dmsb,dlsb) (((unsigned short)B8(dmsb)<<8) + B8(dlsb))
/*
* Sample usage:
* B8(01010101) = 85
* B16(10101010,01010101) = 43605
*/
#endif /* __BINARYCONST_H__ */
|
