Compiler at compilation time

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Assuming that 12 bits are available to store the relevant operand and the result:a. Show how the compiler can use subtraction and shifting only (that is, no use of multiplication)to determine the result of 19*56, if 19 is the value of a variable, x, and 56 is a constant which is known to thecompiler at compilation time. Show the bit patterns of both operands in the multiplication, and explain clearlythe steps you follow to determine the result. Hint: See the slides on "multiplying by constants".b. Now show how the compiler can use subtraction and shifting only (that is, no use ofmultiplication) to determine the result of 19*-56, if 19 is the value of a variable, x, and -56 is a constant which isknown to the compiler at compilation time. Show the bit patterns of both operands in the multiplication, andexplain clearly the steps you follow to determine the result. Hint: See the slides on "multiplying by constants"when the constant is negative.

Reference no: EM131439928

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