About: Double-precision floating-point format

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Double-precision floating-point format (sometimes called FP64 or float64) is a computer number format, usually occupying 64 bits in computer memory; it represents a wide dynamic range of numeric values by using a floating radix point. Floating point is used to represent fractional values, or when a wider range is needed than is provided by fixed point (of the same bit width), even if at the cost of precision. Double precision may be chosen when the range or precision of single precision would be insufficient.

Attributes	Values
rdf:type	software
rdfs:label	Double-precision floating-point format (en)
rdfs:comment	Double-precision floating-point format (sometimes called FP64 or float64) is a computer number format, usually occupying 64 bits in computer memory; it represents a wide dynamic range of numeric values by using a floating radix point. Floating point is used to represent fractional values, or when a wider range is needed than is provided by fixed point (of the same bit width), even if at the cost of precision. Double precision may be chosen when the range or precision of single precision would be insufficient. (en)
sameAs	Double-precision floating-point format
dbp:wikiPageUsesTemplate	dbt:Pp dbt:Reflist dbt:Short_description dbt:Excerpt dbt:Data_types dbt:Floating-point
Subject	Binary arithmetic Computer arithmetic Floating point types
thumbnail	wiki-commons:Special:FilePath/IEEE_754_Double_Floating_Point_Format.svg?width=300
foaf:depiction
gold:hypernym	Format
prov:wasDerivedFrom	http://en.wikipedia.org/wiki/Double-precision_floating-point_format?oldid=1069734321&ns=0
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Wikipage revision ID	1069734321 (xsd:integer)
Link from a Wikipage to another Wikipage	Fortran Machine epsilon NaN Normal number (computing) Nvidia Programming language Rounding X86 X87 ARM architecture family Bit C99 CUDA C data types Binary arithmetic Computer arithmetic JavaScript Java (programming language) Offset binary PA-RISC Decimal separator Common Lisp Computer number format Dynamic range ECMAScript List of computer hardware manufacturers Microsoft Binary Format SSE2 Fixed-point arithmetic GW-BASIC IEEE 754 IEEE 754-1985 IEEE 754-2008 revision Exponent bias Exponentiation Infinity Standardization Strictfp Subnormal number JSON Sign bit Signed zero Significand Significant figures Single-precision floating-point format Floating point types
has abstract	Double-precision floating-point format (sometimes called FP64 or float64) is a computer number format, usually occupying 64 bits in computer memory; it represents a wide dynamic range of numeric values by using a floating radix point. Floating point is used to represent fractional values, or when a wider range is needed than is provided by fixed point (of the same bit width), even if at the cost of precision. Double precision may be chosen when the range or precision of single precision would be insufficient. In the IEEE 754-2008 standard, the 64-bit base-2 format is officially referred to as binary64; it was called double in IEEE 754-1985. IEEE 754 specifies additional floating-point formats, including 32-bit base-2 single precision and, more recently, base-10 representations. One of the first programming languages to provide single- and double-precision floating-point data types was Fortran. Before the widespread adoption of IEEE 754-1985, the representation and properties of floating-point data types depended on the computer manufacturer and computer model, and upon decisions made by programming-language implementers. E.g., GW-BASIC's double-precision data type was the 64-bit MBF floating-point format. (en)
foaf:isPrimaryTopicOf	http://en.wikipedia.org/wiki/Double-precision_floating-point_format
is Wikipage redirect of	Float64 64-bit binary floating-point format 64-bit floating point format Binary64 Double (data type) Double Precision Double data type 64-bit floating-point 64-bit floating-point format 64-bit floating point 9007199254740992 FP64 Double-precision Double-precision floating-point Double-precision floating point Double (type) Double float Double precision Double precision float Double precision floating-point format Double precision floating point Real*8 Dual-precision floating point Float8
is Link from a Wikipage to another Wikipage of	Float64 Floating-point arithmetic Floating-point error mitigation Floating-point unit Green500 Machine epsilon Macsyma

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