Using C bit operators:

* satMul4 - multiplies by 4 but but when positive overflow occurs, returns

* maximum possible value (TMax), and when negative overflow occurs,

* it returns minimum positive value (TMin).

* Examples: satMul4(0x10000000) = 0x40000000

* satMul4(0x20000000) = 0x7FFFFFFF (saturate to TMax)

* satMul4(0x80000000) = 0x80000000 (saturate to TMin)

* Legal ops: ! ~ & ^ | + << >>

* Max ops: 20

* Rating: 3

You are expressly forbidden to:

1. Use any control constructs such as if, do, while, for, switch, etc.

2. Define or use any macros.

3. Define any additional functions in this file.

4. Call any functions.

5. Use any other operations, such as &&, ||, -, or ?:

6. Use any form of casting.

7. Use any data type other than int. This implies that you

cannot use arrays, structs, or unions.