Engineering, 10.11.2019 05:31, sarbjit879

Assuming that 16 bits are available to store the relevant operand and the result:

show how the compiler can use subtraction and shifting only (that is, no use of multiplication) to determine the result of 18504, if 18 is the value of a variable, x, and 504 is a constant which is known to the compiler at compilation time. show the bit patterns of both operands in the multiplication, and explain clearly the steps you follow to determine the result. hint: see the slides on "multiplying by constants".

now show how the compiler can use subtraction and shifting only (that is, no use of multiplication) to determine the result of 18-504, if 18 is the value of a variable, x, and -504 is a constant which is known to the compiler at compilation time. show the bit patterns of both operands in the multiplication, and explain clearly the steps you follow to determine the result. hint: see the slides on "multiplying by constants" when the constant is negative.

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Assuming that 16 bits are available to store the relevant operand and the result:

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