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A Device for Conversion of a Binary Floating-Point Number into a Binary 2-Logarithm or the Opposite
Försvarets Forskningsanstalt, Stockholm, Sweden.ORCID iD: 0000-0003-4828-7488
1995 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

The present invention concerns a device for conversion of a binary floating-point number into a binary fix-point 2-logarithm number or the opposite. This is done in the case of conversion of a binary floating-point number by making the invention include an input register where the floating-point number is stored, an output register for the calculated logarithm, a device that transfers the exponent of the floating-point number from the input register to the output register, where it directly forms the characteristic of the logarithm, a device that transfers the fractional part of the mantissa of the floating-point number from the input register to an adder and also to one or more part circuits that forms additional parts, a device that transfers the additional parts to the adder, said adder that adds the fractional part of the mantissa of the floating-point number and said additional parts and a device that transfers the sum from the adder to the output register where it forms the fractional part of 2-logarithm. Further, the part circuit or part circuits is arranged to be able to use different scale factors in different computing intervals. The conversion from a logarithm is carried out in a similar manner and with the same components.

Place, publisher, year, edition, pages
1995.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hh:diva-22334OAI: oai:DiVA.org:hh-22334DiVA: diva2:623086
Patent
WO95/033308 (1995-12-07)
Available from: 2013-05-24 Created: 2013-05-24 Last updated: 2017-05-15Bibliographically approved

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Hertz, Erik
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