About: Block floating point

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Block floating point (BFP) is a method used to provide an arithmetic approaching floating point while using a fixed-point processor. BFP assigns a group of significands (the non-exponent part of the floating-point number) to a single exponent, rather than single significand being assigned its own exponent. BFP can be advantageous to limit space use in hardware to perform the same functions as floating-point algorithms, by reusing the exponent; some operations over multiple values between blocks can also be done with a reduced amount of computation.

Attributes	Values
rdfs:label	Block floating point (en)
rdfs:comment	Block floating point (BFP) is a method used to provide an arithmetic approaching floating point while using a fixed-point processor. BFP assigns a group of significands (the non-exponent part of the floating-point number) to a single exponent, rather than single significand being assigned its own exponent. BFP can be advantageous to limit space use in hardware to perform the same functions as floating-point algorithms, by reusing the exponent; some operations over multiple values between blocks can also be done with a reduced amount of computation. (en)
dct:subject	Floating point Computer arithmetic
Wikipage page ID	48435335 (xsd:integer)
Wikipage revision ID	1057098650 (xsd:integer)
Link from a Wikipage to another Wikipage	Count leading zeros Floating point Floating-point arithmetic Binary scaling Fast Fourier transform Computer arithmetic Digital signal processor Fixed-point arithmetic Significand Altera Corporation James Hardy Wilkinson
Link from a Wikipage to an external page	https://www.altera.com/content/dam/altera-www/global/en_US/pdfs/literature/an/an404.pdf https://web.archive.org/web/20180711174144/https:/www.altera.com/content/dam/altera-www/global/en_US/pdfs/literature/an/an404.pdf
sameAs	Block floating point Block floating point
dbp:wikiPageUsesTemplate	dbt:Cite_web dbt:Reflist dbt:Use_dmy_dates
cs1-dates	y (en)
date	August 2019 (en)
has abstract	Block floating point (BFP) is a method used to provide an arithmetic approaching floating point while using a fixed-point processor. BFP assigns a group of significands (the non-exponent part of the floating-point number) to a single exponent, rather than single significand being assigned its own exponent. BFP can be advantageous to limit space use in hardware to perform the same functions as floating-point algorithms, by reusing the exponent; some operations over multiple values between blocks can also be done with a reduced amount of computation. The common exponent is found by data with the largest amplitude in the block. To find the value of the exponent, the number of leading zeros must be found (count leading zeros). For this to be done, the number of left shifts needed for the data must be normalized to the dynamic range of the processor used. Some processors have means to find this out themselves, such as exponent detection and normalization instructions. Block floating-point algorithms were extensively studied by James Hardy Wilkinson. BFP can be recreated in software for smaller performance gains. (en)
prov:wasDerivedFrom	wikipedia-en:Block_floating_point?oldid=1057098650&ns=0
page length (characters) of wiki page	5059 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Block_floating_point
is Link from a Wikipage to another Wikipage of	BFP BFP (floating point format) BFP algorithm BFP scaling Block-floating-point Block Floating Point Block Floating Point Scaling Block floating-point Block floating-point algorithm Block floating-point scaling Block floating point algorithm Block floating point scaling Homomorphic encryption Pilot ACE Fixed-point arithmetic
is Wikipage redirect of	BFP (floating point format) BFP algorithm BFP scaling Block-floating-point Block Floating Point Block Floating Point Scaling Block floating-point Block floating-point algorithm Block floating-point scaling Block floating point algorithm Block floating point scaling
is Wikipage disambiguates of	BFP
is foaf:primaryTopic of	wikipedia-en:Block_floating_point

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