Signed Zero in Computing
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Questions and Answers

In computing, which number representations allow for the existence of two zeros?

  • Twos' complement signed number representations
  • Binary-coded decimal (BCD) representations
  • Excess-3 code signed number representations
  • Ones' complement signed number representations (correct)
  • Which standard for floating-point arithmetic requires both +0 and −0?

  • ANSI/ASQ Z1.4 standard
  • ISO/IEC 17025 standard
  • IEEE 754 standard (correct)
  • ISO 9001 standard
  • How is division defined with respect to signed zeros?

  • +∞/+0 = +∞
  • +∞/+0 = −∞
  • +∞/−0 = +∞ (correct)
  • +∞/−0 = −∞
  • What does the notation '−0' informally denote?

    <p>A negative number that has been rounded to zero</p> Signup and view all the answers

    Which mathematical concept does negatively signed zero echo?

    <p>Approaching 0 from below as a one-sided limit</p> Signup and view all the answers

    In ordinary arithmetic, how are −0, +0, and 0 treated?

    <p>They are equivalent</p> Signup and view all the answers

    In which number representations for integers do signed zeros occur?

    <p>Sign-magnitude and ones' complement</p> Signup and view all the answers

    Which standard for floating-point arithmetic requires both +0 and −0?

    <p>IEEE 754</p> Signup and view all the answers

    What does the notation '−0' informally denote?

    <p>A negative number rounded to zero</p> Signup and view all the answers

    How is division defined with respect to signed zeros?

    <p>+∞ for 1/+0 and −∞ for 1/−0</p> Signup and view all the answers

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