Double-precision floating-point format

Double-precision floating-point format is a computer number format that occupies 8 bytes (64 bits) in computer memory and represents a wide, dynamic range of values by using a floating point.

Double-precision floating-point format usually refers to binary64, as specified by the IEEE 754 standard, not to the 64-bit decimal format decimal64.

IEEE 754 double-precision binary floating-point format: binary64

Double-precision binary floating-point is a commonly used format on PCs, due to its wider range over single-precision floating point, in spite of its performance and bandwidth cost. As with single-precision floating-point format, it lacks precision on integer numbers when compared with an integer format of the same size. It is commonly known simply as double. The IEEE 754 standard specifies a binary64 as having:

  • Sign bit: 1 bit
  • Exponent width: 11 bits
  • Significand precision: 53 bits (52 explicitly stored)
  • This gives 15–17 significant decimal digits precision. If a decimal string with at most 15 significant digits is converted to IEEE 754 double precision representation and then converted back to a string with the same number of significant digits, then the final string should match the original. If an IEEE 754 double precision is converted to a decimal string with at least 17 significant digits and then converted back to double, then the final number must match the original.

    Double (volleyball)

    A double occurs in volleyball when a player, during a match, is credited with scoring at least ten times in one (or more) of five statistical categories: Aces, Kills, Blocks, Digs, and Assists. The term was apparently derived from similar basketball jargon; the expression "triple-double" was coined by former Los Angeles Lakers public relations director Bruce Jolesch in order to showcase Magic Johnson's versatility.

    There are four main types of doubles:

  • Double-double is the accumulation of a double-digit number total in two of the five categories.
  • Triple-double is the accumulation of a double-digit number total in three of the five categories.
  • Quadruple-double is the accumulation of a double-digit number total in four of the five categories.
  • Quintuple-double is the accumulation of a double-digit number total in all five of the five categories.
  • Of the five statistical categories, double digit match totals are most common for assists, but rare for any positions other than setter. The next most frequent double-digit category is digs, which is most often attained by liberos or defensive specialists, but can be achieved by any strong defensive player. Kills are the third most common double-digit achievement category, occurring predominantly among hitters, especially outside hitters and middle blockers. Likewise, double-digit blocking numbers are preponderantly accomplished by middle blockers or outside hitters, but are much less common than double-digit kills. Rarest by far are double-digit aces, which even the most exceptional server is unlikely to attain once in a career.

    Double (cricket)

    A cricketer is said to achieve the double if he scores a thousand or more runs and also takes a hundred or more wickets in first-class matches during the course of a single season. The feat is extremely rare outside England because of the smaller number of first-class matches played in most other countries. It has also become very uncommon in England in recent decades because of the reduction in the first-class programme in favour of more List A matches, last being achieved by Franklyn Stephenson in 1988.

    Wilfred Rhodes performed the double more often than anyone else, 16 times. George Hirst achieved the feat on 14 occasions, including a unique "double double" in 1906 of 2385 runs and 208 wickets. Jim Parks senior managed the unique double of 3000 runs and 100 wickets in 1937. Maurice Tate, who scored 1193 runs and took 116 wickets during the MCC tour of India and Ceylon in 1926-27, is the only cricketer to achieve the feat outside England.

    The "wicketkeeper's double", of one thousand runs and one hundred dismissals in a season, is very rare, having only been achieved by Les Ames, on three occasions, and by John Murray.

    Numeral (linguistics)

    In linguistics, a numeral is a member of a word class (or sometimes even a part of speech) designating numbers, such as the English word 'two' and the compound 'seventy-seven'.

    Identifying numerals

    Numerals may be attributive, as in two dogs, or pronominal, as in I saw two (of them).

    Many words of different parts of speech indicate number or quantity. Quantifiers do not enumerate, or designate a specific number, but give another, often less specific, indication of amount. Examples are words such as every, most, least, some, etc. There are also number words which enumerate but are not a distinct part of speech, such as 'dozen', which is a noun, 'first', which is an adjective, or 'twice', which is an adverb. Numerals enumerate, but in addition have distinct grammatical behavior: when a numeral modifies a noun, it may replace the article: the/some dogs played in the parktwelve dogs played in the park. (Note that *dozen dogs played in the park is not grammatical, so 'dozen' is not a numeral.)

    Zero (name)

    Zero or Zéro is surname, given name or pseudonym of the following people:

  • Gonzalo Barrios (esports player) (born 1995), Professional Super Smash Bros. for Wii U player known by his alias ZeRo
  • João Zero (cartoonist) (born 1950), Brazilian illustrator
  • Karl Zéro, stage name of the french filmmaker Marc Tellenne (born 1961)
  • Lady Zero, stage name of the Japanese professional wrestler Chigusa Nagayo (born 1964), see Zero (wrestler)
  • Mr. Zero, an alias of Urbain Ledoux (1874-1941), activist for the unemployed
  • Renato Zero, stage name of the Italian singer/songwriter Renato Fiacchini (born 1950)
  • Zero, stage name of the Japanese bass player of the former band D'espairsRay
  • Zero Kazama (born 1982), Japanese-American game show host
  • Zero Mostel, stage name of the American actor Samuel Joel Mostel (1915–1977)
  • Zero is name of the following notable fictional characters:

  • Zero Moustafa, a character in The Grand Budapest Hotel
  • Zero (Drakengard), a character in Drakengard 3
  • Zero (Kirby), a character in Kirby media
  • 2 Zero 0-0

    2 Zero 0-0 is a 1999 album by the Junkanoo band Baha Men. Initially released in Japan and then two years later in the US and elsewhere, it was most popular in the Western Bahamas and Southern Africa. The album launched the single "You All Dat", which charted at #94 on the Billboard Hot 100.

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