Floating-point calculator
US6701337B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2000 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Dec 4, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/5045
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A floating-point calculator includes an exponent part calculator device which executes subtraction by sequentially combining exponents of a plurality of operands, and obtains subtraction result exponents of respective combinations to be used as alternatives for the number of digits for digit adjustment of fixed-point parts of the operands and carries of the subtraction, respectively;a maximum value selector device responsive to values of said carries to select one of said exponents of said operands having the maximum value; a digit adjustment object selector device responsive to values of the carries to select a fixed-point part of the operand to be adjusted in digit; and a digit adjustment number-of-digits selector device responsive to values of the carries to select the subtraction result exponent to be used as the number of digits for digit adjustment of the fixed-point part of the operand to be adjusted in digit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.