README

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powerof2.cpp 

Finds if the input number is a power of 2.

./powerof2 1024
Input: 1024
Input (base 2):               0000000000000000000000000000000000000000000000000000010000000000
Input-1 (base 2):             0000000000000000000000000000000000000000000000000000001111111111
Input & (Input -1), (base 2): 0000000000000000000000000000000000000000000000000000000000000000
result: 0

True

./powerof2 1023
Input: 1023
Input (base 2):               0000000000000000000000000000000000000000000000000000001111111111
Input-1 (base 2):             0000000000000000000000000000000000000000000000000000001111111110
Input & (Input -1), (base 2): 0000000000000000000000000000000000000000000000000000001111111110
result: 1022

False

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bitpos.cpp 

Reads a decimal number and outputs the binary form and the set bit position numbers.

./bitpos 1024
Input : 1024
Binary: 0000000000000000000000000000000000000000000000000000010000000000
Bit position: 10 is set

./bitpos 4294967298
Input : 4294967298
Binary: 0000000000000000000000000000000100000000000000000000000000000010
Bit position: 1 is set
Bit position: 32 is set

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bitpostodec.cpp

Reads multiple decimal numbers, sets those bit positions in a 64 bit integer and 
returns the decimal equivalent.

./bitpostodec 10
Value: 1024

./bitpostodec 32 1 
Value: 4294967298

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