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- Arithmetic_overflow abstract "The term arithmetic overflow or simply overflow has the following meanings. In a computer, the condition that occurs when a calculation produces a result that is greater in magnitude than that which a given register or storage location can store or represent. In a computer, the amount by which a calculated value is greater in magnitude than that which a given register or storage location can store or represent. Note that the overflow may be placed at another location.Most computers distinguish between two kinds of overflow conditions. A carry occurs when the result of an addition or subtraction, considering the operands and result as unsigned numbers, does not fit in the result. Therefore, it is useful to check the carry flag after adding or subtracting numbers that are interpreted as unsigned values. An overflow proper occurs when the result does not have the sign that one would predict from the signs of the operands (e.g. a negative result when adding two positive numbers). Therefore, it is useful to check the overflow flag after adding or subtracting numbers that are represented in two's complement form (i.e. they are considered signed numbers).There are several methods of handling overflow: Avoidance: by carefully ordering operations, checking operands in advance and selecting the correct data type, it is possible to ensure that the result will never be larger than can be stored. Handling: If it is anticipated that overflow may occur and when it happens detected and other processing done. Example: it is possible to add two numbers each two bytes wide using just a byte addition in steps: first add the low bytes then add the high bytes, but if it is necessary to carry out of the low bytes this is arithmetic overflow of the byte addition and it necessary to detect and increment the sum of the high bytes. CPUs generally have a way of detecting this to support addition of numbers larger than their register size, typically using a status bit. Propagation: if a value is too large to be stored it can be assigned a special value indicating that overflow has occurred and then have all successive operation return this flag value. This is useful so that the problem can be checked for once at the end of a long calculation rather than after each step. This is often supported in Floating Point Hardware called FPUs. An overflow condition may be ignored, particularly if the possibility has not been anticipated, but this gives incorrect results and can compromise a program's reliability and security.Division by zero is not a form of arithmetic overflow. Mathematically, division by zero within reals is explicitly undefined.".
- Arithmetic_overflow wikiPageID "40724".
- Arithmetic_overflow wikiPageLength "4400".
- Arithmetic_overflow wikiPageOutDegree "19".
- Arithmetic_overflow wikiPageRevisionID "679798460".
- Arithmetic_overflow wikiPageWikiLink Application_security.
- Arithmetic_overflow wikiPageWikiLink Ariane_5_Flight_501.
- Arithmetic_overflow wikiPageWikiLink Arithmetic_underflow.
- Arithmetic_overflow wikiPageWikiLink Carry_(arithmetic).
- Arithmetic_overflow wikiPageWikiLink Carry_flag.
- Arithmetic_overflow wikiPageWikiLink Category:Computer_arithmetic.
- Arithmetic_overflow wikiPageWikiLink Central_processing_unit.
- Arithmetic_overflow wikiPageWikiLink Cluster_(spacecraft).
- Arithmetic_overflow wikiPageWikiLink Computer.
- Arithmetic_overflow wikiPageWikiLink Computer_data_storage.
- Arithmetic_overflow wikiPageWikiLink Computer_storage.
- Arithmetic_overflow wikiPageWikiLink Defined_and_undefined.
- Arithmetic_overflow wikiPageWikiLink Division_by_zero.
- Arithmetic_overflow wikiPageWikiLink Floating-point_unit.
- Arithmetic_overflow wikiPageWikiLink Floating_point_unit.
- Arithmetic_overflow wikiPageWikiLink IEEE_754.
- Arithmetic_overflow wikiPageWikiLink IEEE_floating_point.
- Arithmetic_overflow wikiPageWikiLink Integer_overflow.
- Arithmetic_overflow wikiPageWikiLink Overflow_flag.
- Arithmetic_overflow wikiPageWikiLink Processor_register.
- Arithmetic_overflow wikiPageWikiLink Real_number.
- Arithmetic_overflow wikiPageWikiLink Real_numbers.
- Arithmetic_overflow wikiPageWikiLink Software_bug.
- Arithmetic_overflow wikiPageWikiLink Software_security.
- Arithmetic_overflow wikiPageWikiLink Twos_complement.
- Arithmetic_overflow wikiPageWikiLink Well-defined.
- Arithmetic_overflow wikiPageWikiLinkText "Arithmetic overflow".
- Arithmetic_overflow wikiPageWikiLinkText "Overflow".
- Arithmetic_overflow wikiPageWikiLinkText "arithmetic overflow".
- Arithmetic_overflow wikiPageWikiLinkText "numeric overflow".
- Arithmetic_overflow wikiPageWikiLinkText "overflow".
- Arithmetic_overflow wikiPageWikiLinkText "overflowed".
- Arithmetic_overflow wikiPageWikiLinkText "overflowing".
- Arithmetic_overflow wikiPageWikiLinkText "overflows".
- Arithmetic_overflow wikiPageWikiLinkText "wrap around".
- Arithmetic_overflow wikiPageWikiLinkText "wrap-around".
- Arithmetic_overflow hasPhotoCollection Arithmetic_overflow.
- Arithmetic_overflow wikiPageUsesTemplate Template:Merge.
- Arithmetic_overflow wikiPageUsesTemplate Template:Refimprove.
- Arithmetic_overflow wikiPageUsesTemplate Template:Reflist.
- Arithmetic_overflow subject Category:Computer_arithmetic.
- Arithmetic_overflow comment "The term arithmetic overflow or simply overflow has the following meanings. In a computer, the condition that occurs when a calculation produces a result that is greater in magnitude than that which a given register or storage location can store or represent. In a computer, the amount by which a calculated value is greater in magnitude than that which a given register or storage location can store or represent.".
- Arithmetic_overflow label "Arithmetic overflow".
- Arithmetic_overflow sameAs Přetečení.
- Arithmetic_overflow sameAs Arithmetischer_Überlauf.
- Arithmetic_overflow sameAs Αριθμητική_υπερχείλιση.
- Arithmetic_overflow sameAs Desbordamiento_aritmético.
- Arithmetic_overflow sameAs سرریز_محاسباتی.
- Arithmetic_overflow sameAs Overflow_aritmetico.
- Arithmetic_overflow sameAs 算術オーバーフロー.
- Arithmetic_overflow sameAs Overflow_(informatica).
- Arithmetic_overflow sameAs Przepełnienie.
- Arithmetic_overflow sameAs m.0b4n7.
- Arithmetic_overflow sameAs Арифметическое_переполнение.
- Arithmetic_overflow sameAs Aritmetik_taşma.
- Arithmetic_overflow sameAs Арифметичне_переповнення.
- Arithmetic_overflow sameAs Q669163.
- Arithmetic_overflow sameAs Q669163.
- Arithmetic_overflow sameAs 算術溢出.
- Arithmetic_overflow wasDerivedFrom Arithmetic_overflow?oldid=679798460.
- Arithmetic_overflow isPrimaryTopicOf Arithmetic_overflow.