会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Enhanced fused multiply-add operation
    • 增强融合乘法运算
    • US07499962B2
    • 2009-03-03
    • US11019921
    • 2004-12-21
    • Ping T. TangDavid D. Donofrio
    • Ping T. TangDavid D. Donofrio
    • G06F7/483
    • G06F7/5443G06F7/483
    • An apparatus, method, and system for performing an enhanced fused multiply-add operation is disclosed. In one embodiment, an apparatus includes an exponent unit. The exponent unit includes a first adder to generate S1, where S1 is the sum of an integer k, the exponent of a floating point value A, and the exponent of a floating point value B. The exponent unit also includes a comparator to generate E1, where E1 is the greater of S1 and the exponent of a floating point value C. The apparatus also includes a partial multiplier, a shifter, and a second adder. The partial multiplier generates the partial products of the mantissas of A and B. The shifter aligns the partial products and the mantissa of C, based on E1. The second adder adds the aligned partial products and the mantissa of C. The apparatus is able to generate not only (A*B+C), but is enhanced to also be able to generate (2k*A*B+C) and the closest integer to (2k*A*B) in two's complement or floating point format.
    • 公开了一种用于执行增强的融合乘法运算的装置,方法和系统。 在一个实施例中,装置包括指数单元。 指数单元包括产生S1的第一加法器,其中S1是整数k,浮点值A的指数和浮点值B的指数之和。指数单元还包括产生E1的比较器 其中E1是S1中的较大者和浮点值C的指数。该装置还包括部分乘法器,移位器和第二加法器。 部分乘法器产生A和B的尾数的部分乘积。移位器基于E1对齐部分乘积和C的尾数。 第二个加法器将对齐的部分积和C的尾数相加。该装置能够不仅产生(A * B + C),而且能够增强也能够生成(2k * A * B + C)和 最接近的整数(2k * A * B)为二进制补码或浮点格式。