Set sixth bit to 1

dattu.kv · #1 (**permalink**) 11-16-2007

Given a sixteen bit number. How can sixth bit can be set to 1 irrespective of its initial value and sixth bit reset to zero irrespective of its initial value

ruler_of_doll · #2 (**permalink**) 11-19-2007

suppose 'a' contains 16 bit number. And initialize b with 32.

a=a|b; /*this will convert 6th bit to One irrespective of its original bit*/

now for making 6th bit 0, load b with 65503 and do the following.
a=a&b;

nishant_naveen · #3 (**permalink**) 12-04-2007

for setting the 6th bit:
x | (1<<5)

for unsetting the 6th bit:
x & (~(1<<5))

hope it helps.

sk_seeker · #4 (**permalink**) 12-22-2007

Quote:

Originally Posted by dattu.kv

Given a sixteen bit number. How can sixth bit can be set to 1 irrespective of its initial value and sixth bit reset to zero irrespective of its initial value

You could also use the OR and AND operators to help you put.

#define MASK1 0x0040 // Note that 6th bit is 1, counting from 0
#define MASK2 0xffbf // Note that the 6th bit is 0

// Set 6th bit of x to 1
x = x | MASK1

// Set 6th bit of x to 0
x = x & MASK2

sherleena · #5 (**permalink**) 01-10-2008

what the hell is the answr..

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode