Get one bit from byte using c

[Micro Lover]

hi

In "C" i have two Variables, one is 8-bit variable, one is 1-bit, like

unsigned char temp = 123;
bit DataSaved = 0;

now i want to copy anyone bit from "temp" to "DataSaved"

haw can i do it?

 

[zuisti]

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Code C - [expand]
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if (temp & (1 << bitnumber)) 
   Datasaved = 1;
else
   Datasaved = 0;

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[alexan_e]

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Code C - [expand]
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#define SETBIT(ADDRESS,BIT) (ADDRESS |= (1<<BIT)) 
#define CLEARBIT(ADDRESS,BIT) (ADDRESS &= ~(1<<BIT)) 
#define CHECKBIT(ADDRESS,BIT) (ADDRESS & (1<<BIT)) 
#define WRITEBIT(RADDRESS,RBIT,WADDRESS,WBIT) (CHECKBIT(RADDRESS,RBIT) ? SETBIT(WADDRESS,WBIT) : CLEARBIT(WADDRESS,WBIT))
 
// one way is
if CHECKBIT(temp,bitnumber) Datasaved = 1;
else Datasaved = 0;
 
// this is a secod way, it can probably work but I haven't tried with a 1bit variable
WRITEBIT(temp,bitnumber,Datasaved,0);
 
//if it doesn't work then use the following define instead
#define WRITEBT(RADDRESS,RBIT,WADDRESS) (CHECKBIT(RADDRESS,RBIT) ? (WADDRESS=1) : (WADDRESS=0)
WRITEBT(temp,bitnumber,Datasaved);

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Alex