用符号逆二补码表示指数时浮点数绝对值的比较

O. Samoshchenko, H. Marhiiev, O. Miroshkin
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引用次数: 0

摘要

浮点数绝对值的比较是通过对操作数、指数和分数的联合一步分析来实现的。当指数和分数以标准形式表示时,确定浮点数绝对值比较符号的规则被制定并在数学上得到确认。分析证明了一种用于初始浮点值分数比较的模加法器算法。在指数与分数联合加法器格式下,提出了一种使用符号逆二互补编码进行原始操作数比较的运算实现,在该格式的标准输出中,浮点数绝对值比较符号是唯一一致形成的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparison of Floating-Point Numbers Absolute Values when Representation of the Exponents with Sign-Inverse Two’s Complementary Code
Comparison of floating-point numbers absolute values is implemented by a joint one-step analysis of operands exponents and fractions. Rules for determination of comparison signs for floating-point numbers absolute values, when exponents and fractions are canonically represented, are formulated and mathematically confirmed. An algorithm for a modulo adder usage for initial floating-point values fractions comparison is analytically substantiated. An operation’s implementation with the usage of sign-inverse two’s complementary encoding is proposed for original operands comparison in a scheme of joint adder of exponents and fractions, at the standard outputs of which floating-point numbers absolute values comparison signs are uniquely and consistently formed.
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