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Lecture08 - 0306-381 Applied Programming Exam One Results...

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0306-381 Applied Programming Exam One Results Floating-Point Algorithm Summary Number Representations Fixed-Point Numbers
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Generate Significands of A and B: If Exponent is 0? ° 0 Otherwise ° 1 concatenated with Fraction Compute Sign of C: XOR signs of A and B Compute Exponent of C: Add unbiased Exponents and then bias Compute Significand of C: Multiply Significands of A and B Truncate extra fractional bits Normalize, if necessary: If there is a second integer bit >>= 1 Exponent++ Assign Fraction of C Floating-Point Multiplication: C A · B 2
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Approximate reciprocal of B Multiply A and reciprocal of B Floating-Point Division: C A B “Approximation” Implementation 3
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Generate Significands of A and B : If Exponent is 0? ° 0 Otherwise ° 1 concatenated with Fraction Compute Sign of C: (Maybe change Significand) Do A and B have same sign? ° same as A and B Otherwise: ° same as sign of larger Is A Exponent larger than B Exponent? ° A larger Is B Exponent larger than A Exponent? ° B larger Otherwise (Exponents are equal): Is A Significand larger than B Significand? A larger also Negate B Significand Is B Significand larger than A Significand? B larger also Negate A Significand Otherwise numbers are equal Floating-Point Additon: C A + B Page 1 of 2 4
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Compute Exponent of C: Larger of A and B Exponents Align smaller of A or B Compute Significand of C: Add Significands of A and B Normalize, if necessary:
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