Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2005-05-24
2005-05-24
Malzahn, D. H. (Department: 2124)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S204000, C708S495000
Reexamination Certificate
active
06898615
ABSTRACT:
An exponent part extraction section extracts a bit series from the exponent part of an inputted floating point data. A mantissa part extraction section extracts the uppermost K bits from the mantissa part of the floating point data. A first conversion section inputs the output e from the exponent part extraction section and outputs the value of a function X(e) thereof. A second conversion section inputs the output f from the mantissa part extraction section and outputs the value of a function Y(f) thereof. A multiplier section multiplies together these values. By setting suitable tables in advance in the first and the second conversion sections, the calculation of the v^p for an item v of floating point data can be performed.
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Ishikawa Tomokazu
Miyasaka Shuji
Norimatsu Takeshi
Sawada Yoshiaki
Tsushima Mineo
Malzahn D. H.
Matsushita Electric - Industrial Co., Ltd.
Smith Patent Office
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