Patent ID: 6701337
Filing Date: 2004-03-02
Classification: G06F

Abstract:
A floating-point calculator comprising:an exponent part calculator device which executes subtraction by sequentially combining respective pair of 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 said operands and carries of said subtraction, respectively; a maximum value selector device responsive to values of said carries to select one of the results of the combining having the maximum value; a digit adjustment object selector device responsive to values of said carries to select a fixed-point part of said operands to be adjusted in digit; and a digit adjustment number-of-digits selector device responsive to values of said carries to select one of said subtraction result exponents to be used as said number of digits for digit adjustment of said fixed-point part of said operand to be adjusted in digit.