f returns (n * 2^(l-r)) n<<l => n * 2^l (n<<l)>>r

what is the purpose of the code, and is there any problem
with the code?

int f( int n, int l, int r )
{ return (n << l) >> r; }

Question Posted / senthil

Answer Posted / senthil

f returns (n * 2^(l-r))

n<<l => n * 2^l
(n<<l)>>r => (n * 2^l)/(2^r)=>(n * 2^(l-r))

Is This Answer Correct ?

1 Yes

0 No

Please Help Members By Posting Answers For Below Questions

What are the __date__ and __time__ preprocessor commands?

1062

Explain about the constants which help in debugging?

1328

What are integer variable, floating-point variable and character variable?

1201

Why c is known as a mother language?

1050

a program that can input number of records and can view it again the record

1875

A collection of functions,calls,subroutines or other data a) library b) header files c) set of files d) textfiles

1137

Write a program that takes a 5 digit number and calculates 2 power that number and prints it(should not use big integers and exponential functions)

6769

How can I make sure that my program is the only one accessing a file?

1215

What is the difference between declaring a variable by constant keyword and #define ing that variable?

3305

Device an algorithm for weiler-atherton polygon clipping, where the clipping window can be any specified polygon

5910

What are the functions to open and close the file in c language?

1006

What is register variable in c language?

998

explain what is a newline escape sequence?

1049

How is actual parameter different from the formal parameter?

987

What is function definition in c?

1038