mantissa

Examples

• All

• When calculating logarithms, the mantissa is the part that appears after the decimal point, such as 0.5 in log 3.16 = 0.5.

• So we represent a floating point number as a pair of a mantissa and an exponent.

• The alignment shifter for the B mantissa is reduced to a 53-bit input, 136-bit output right shifter through double-pumping.

  Academic text (1996)

• The format of this 70-bit number includes a 3-bit tag, a 1-bit sign, a 13-bit exponent, and a 53-bit mantissa.

  Academic text (1996)

• The normalization shifter is implemented with a 63-bit left shifter, and in the event of mass cancellation in the mantissa calculation, the WB stage could require one or two extra clock cycles to execute.

  Academic text (1996)

• For cases of exceptions with corresponding exception-enable bits that are clear in the FPSCR, early detection in the bypass unit is carried out with exponent and mantissa checking, and appropriate default results are generated, while late detection is handled by generating a meaningful result.

  Academic text (1996)

• In the logarithmic expression log 643 = 2.808, the number 0.808 represents the mantissa.

Synonyms

F

fixed-point part

vsmantissa

• Specialized

8.7

The part after the decimal point in a logarithm, for example .808 in log 643 = 2.808

has identical meaning but is the alternate traditional technical name

Surface Forms

Etymology