diff options
| author | jcid <devnull@localhost> | 2007-10-07 00:36:34 +0200 |
|---|---|---|
| committer | jcid <devnull@localhost> | 2007-10-07 00:36:34 +0200 |
| commit | 93715c46a99c96d6c866968312691ec9ab0f6a03 (patch) | |
| tree | 573f19ec6aa740844f53a7c0eb7114f04096bf64 /src/binaryconst.h | |
Initial revision
Diffstat (limited to 'src/binaryconst.h')
| -rw-r--r-- | src/binaryconst.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/binaryconst.h b/src/binaryconst.h new file mode 100644 index 00000000..b5b9735b --- /dev/null +++ b/src/binaryconst.h @@ -0,0 +1,38 @@ +#ifndef __BINARYCONST_H__ +#define __BINARYCONST_H__ + +/* Macros for allowing binary constants in C + * By Tom Torfs - donated to the public domain */ + +#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__ */ + |