| ??? 02/26/09 10:43 Read: times Msg Score: +1 +1 Informative |
#162880 - Use macros for that. Responding to: ???'s previous message |
There are nice macros for 8,16,32 bit binary values.
See for example: http://www.embeddedrelated.com/usenet/em...9067-1.php /** * Binary constant generator macros evaluating to compile-time constants * Sample usage: * unsigned char x = BIN(01010101); */ /* Helper macros HEX__ and B8__ not to be used directly */ #define HEX__(n) 0x##n##UL #define B8__(x) ( (((x)&0xF0000000UL)?0x80:0) | (((x)&0x0F000000UL)?0x40:0) | (((x)&0x00F00000UL)?0x20:0) | (((x)&0x000F0000UL)?0x10:0) | (((x)&0x0000F000UL)?0x08:0) | (((x)&0x00000F00UL)?0x04:0) | (((x)&0x000000F0UL)?0x02:0) | (((x)&0x0000000FUL)?0x01:0)) /* For up to 8-bit binary constants */ #define BIN(b) ((unsigned char)B8__(HEX__(b))) Best reagrds J. Christoph |
| Topic | Author | Date |
| Bin in C | 01/01/70 00:00 | |
| Possible solution | 01/01/70 00:00 | |
| You need to check if this works with your compiler | 01/01/70 00:00 | |
| Does it work with any? | 01/01/70 00:00 | |
| popular demand | 01/01/70 00:00 | |
| My compiler is IAR | 01/01/70 00:00 | |
| because that's a non-standard (non-ANSI) extension | 01/01/70 00:00 | |
| What made you beleive that it would work? | 01/01/70 00:00 | |
| Use #define names | 01/01/70 00:00 | |
| Yes, but... | 01/01/70 00:00 | |
| Use macros for that. | 01/01/70 00:00 | |
| facilitates my understanding | 01/01/70 00:00 | |
| Working with flags | 01/01/70 00:00 | |
| how I do it | 01/01/70 00:00 | |
I use a macro | 01/01/70 00:00 |