About: Unit in the last place

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In computer science and numerical analysis, unit in the last place or unit of least precision (ulp) is the spacing between two consecutive floating-point numbers, i.e., the value the least significant digit (rightmost digit) represents if it is 1. It is used as a measure of accuracy in numeric calculations.

Attributes	Values
rdfs:label	Unit in the last place (it) Unit in the last place (en) 最后一位上的单位值 (zh)
rdfs:comment	Si definisce unit in the last place (unità in ultima posizione) o unit of least precision (unità di minore precisione), comunemente abbreviato in ulp, il valore assunto in un numero in virgola mobile dalla cifra unitaria in posizione meno significativa, ovvero la distanza fra due numeri macchina consecutivi. L'ulp è adatta come misura dei piccoli errori nelle operazioni atomiche, mentre si presta meno bene ad esprimere gli errori di computazioni più ampie, per cui è comunemente impiegata per esprimere gli errori nell'aritmetica dei calcolatori, meno spesso nell'analisi numerica. (it) In computer science and numerical analysis, unit in the last place or unit of least precision (ulp) is the spacing between two consecutive floating-point numbers, i.e., the value the least significant digit (rightmost digit) represents if it is 1. It is used as a measure of accuracy in numeric calculations. (en) 在计算机科学与数值分析中，最后一位上的单位值或称最小精度单位，缩写为ULP，是毗邻的浮点数值之间的距离，也即浮点数在保持指数部分的时候最低有效数字为1所对应的值。ULP用于度量数值计算的精度。例如：圆周率位于毗邻的双精度浮点数3.1415926535897927与3.1415926535897936之间。 (zh)
dcterms:subject	Floating point Computer arithmetic
Wikipage page ID	1498076 (xsd:integer)
Wikipage revision ID	1092139500 (xsd:integer)
Link from a Wikipage to another Wikipage	Python (programming language) Rounding Numerical digit Library (computing) Single-precision floating-point format Elementary arithmetic Fused multiply–add Computer science C (programming language) Floating point Numerical analysis Floating-point Machine epsilon Radix Computer arithmetic Haskell Java (programming language) Boost C++ libraries Accuracy and precision Least significant bit Swift (programming language) Table-maker's dilemma Pi Square root IEEE floating point IEEE 754 ISO/IEC 10967 Significand Transcendental function Double-precision Java (language)
Link from a Wikipage to an external page	http://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html%23689.
sameAs	Unit in the last place Unit in the last place Unit in the last place Unit in the last place Unit in the last place
dbp:wikiPageUsesTemplate	dbt:Citation_needed dbt:Cite_book dbt:More_citations_needed dbt:Pi dbt:Reflist dbt:Use_dmy_dates dbt:Wiktionary
has abstract	Si definisce unit in the last place (unità in ultima posizione) o unit of least precision (unità di minore precisione), comunemente abbreviato in ulp, il valore assunto in un numero in virgola mobile dalla cifra unitaria in posizione meno significativa, ovvero la distanza fra due numeri macchina consecutivi. L'ulp è adatta come misura dei piccoli errori nelle operazioni atomiche, mentre si presta meno bene ad esprimere gli errori di computazioni più ampie, per cui è comunemente impiegata per esprimere gli errori nell'aritmetica dei calcolatori, meno spesso nell'analisi numerica. (it) In computer science and numerical analysis, unit in the last place or unit of least precision (ulp) is the spacing between two consecutive floating-point numbers, i.e., the value the least significant digit (rightmost digit) represents if it is 1. It is used as a measure of accuracy in numeric calculations. (en) 在计算机科学与数值分析中，最后一位上的单位值或称最小精度单位，缩写为ULP，是毗邻的浮点数值之间的距离，也即浮点数在保持指数部分的时候最低有效数字为1所对应的值。ULP用于度量数值计算的精度。例如：圆周率位于毗邻的双精度浮点数3.1415926535897927与3.1415926535897936之间。 (zh)
prov:wasDerivedFrom	wikipedia-en:Unit_in_the_last_place?oldid=1092139500&ns=0
page length (characters) of wiki page	10130 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Unit_in_the_last_place
is Link from a Wikipage to another Wikipage of	Rounding Numerical error Single-precision floating-point format Pythagorean addition Floating-point arithmetic Floating-point error mitigation Machine epsilon Quadruple-precision floating-point format Resolution Half-precision floating-point format TeraScale (microarchitecture) Bit numbering X86 instruction listings ULP IEEE floating point Unit in the Last Place
is Wikipage redirect of	Unit in the Last Place
is Wikipage disambiguates of	ULP
is foaf:primaryTopic of	wikipedia-en:Unit_in_the_last_place

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