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mantissa    
n. 尾数

尾数

mantissa
( 对数的 )假数; 假数; 尾数; 定值部; 浮点数

mantissa
尾数

mantissa
n 1: the positive fractional part of the representation of a
logarithm; in the expression log 643 = 2.808 the mantissa
is .808 [synonym: {mantissa}, {fixed-point part}]

mantissa \man*tis*sa\, n. [L., an addition, makeweight; of
Tuscan origin.] (Math.)
The decimal part of a logarithm, as distinguished from the
integral part, or {characteristic}.
[1913 Webster]


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  • What is mantissa? [Solved] - Cuemath
    In a decimal number, Mantissa is the part of a number located after a decimal point Let's take a number 6 745 The mantissa is the part after the decimal point i e, 0 745 Mantissa in terms of Scientific Notation: A regular number contains two significant components when written in Scientific notation a) mantissa, and b) exponent
  • What does mantissa mean here? - Mathematics Stack Exchange
    However, this use of mantissa is discouraged by the IEEE floating-point standard committee and by some professionals such as William Kahan and Donald Knuth,[citation needed] because it conflicts with the pre-existing use of mantissa for the fractional part of a logarithm (see also common logarithm) What does mantissa actually mean here ?
  • terminology - What are the numbers before and after the decimal point . . .
    But my point was the following: You said "mantissa is standard terminology for the 234 part of exponential notations such as 1 234 × 10e56" According to that wikipedia article, however, the mantissa is the 1 234 part, so including the 1 That's the difference $\endgroup$ –
  • Floating-point systems: Is the mantissa the whole thing or just the . . .
    Wolfram MathWorld, as you found, has a definition slightly different from either of these Their definition of mantissa is the fractional part of a number whether or not that number is being interpreted as a base-ten logarithm The definition of mantissa as a synonym for significand is not consistent with the
  • When and by whom was the term mantissa coined and what did it mean . . .
    MANTISSA is a late Latin term of Etruscan origin, originally meaning an addition, a makeweight, or something of minor value, and was written mantisa In the 16th century it came to be written mantissa and to mean appendix (Smith vol 2, page 514)
  • Floating point number,Mantissa,Exponent - Mathematics Stack Exchange
    Usually the mantissa is considered to have a binary point after the first bit, so your mantissa would be $1 1100_2=\frac 74=1 75_{10}$ Sometimes a leading $1$ is assumed, so your mantissa would be $(1) 11100_2=\frac{15}8=1 875_{10}$ This gives one more bit of precision To find the exponent, you subtract the offset from the stored value
  • Finding the mantissa from binary with floating point numbers?
    Yes, there is an implicitly "hidden" bit, so if your mantissa is 1100000000000000000000, then that corresponds to the base 2 number 1 11 Now, if you want to compute the value of 11 part, you just do the same thing as you would do to convert a normal binary number to decimal: multiply each bit by a power of 2
  • Floating-point arithmetic and loss of precision: Shifting mantissa . . .
    In adding or subtracting two floating-point numbers, their exponents must match before their mantissas can be added or subtracted If they do not match initially, then the mantissa of one of the numbers must be shifted until the exponents do match The book gives the following example: I'm having trouble making sense of any of this
  • numerical methods - Why do we want to keep mantissa as small as . . .
    The mantissa can be made smaller, usually by some power of the base, and this requires the exponent to be made correspondingly larger These numbers are called un-normalized There is a whole lot more in the discussion of floating point arithmetic
  • Log Table - How to Use Log Table? | Logarithm Table - Cuemath
    The mantissa of the logarithm of a number is always positive and is found using the log table Remember that the mantissa is always prefixed by a decimal point Here are the steps to find the mantissa of the logarithm of a number Assume that we are trying to find the mantissa of the logarithm of the number 0 001724





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