Exercises

1. With a 32-bit data element size , what is the result of a logical right shifting of the following data by 34 bits? With an arithmetic right shift? With a logical left shift?

   0xB83DE7820

2. Write a function to count the number of bits to contain a signed value.

3. Write a packed 16— 8-bit SAR, using pseudo vector code.

4. Write a packed 16— 8-bit SAR, using SIMD instructions.

5. Write a packed ROL using SIMD.

   1. 8-bit

   2. 16-bit

   3. 32-bit

6. Write a packed ROR using SIMD.

   1. 8-bit

   2. 16-bit

   3. 32-bit