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Accessing Individual Bits of a Variable

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Amin

Joined: 19 Feb 2004
Posts: 15

Accessing Individual Bits of a Variable
Posted: Sat Feb 19, 2005 7:57 pm

Hi sorry for the newbiest question of all how do I access a single bit in a variable ? I searched but my keywords are too generic tpo pinpoint any good search results. and is it faster to check if bit seven is 1 or to compared the value against 127? Thanks Amin _________________ McMaster Solar Car Project http://www.solarcar.mcmaster.ca

future

Joined: 14 May 2004
Posts: 330

Re: Accessing Individual Bits of a Variable

Posted: Sat Feb 19, 2005 8:16 pm

Reply with quote

Amin wrote:

Hi
sorry for the newbiest question of all

how do I access a single bit in a variable ?
I searched but my keywords are too generic tpo pinpoint any good search results.

and is it faster to check if bit seven is 1 or to compared the value against 127?

Thanks
Amin

bit_test();, bit_set(); and bit_clear();.

Bit 7 will tell if your variable is equal or greater than 128.

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