发明名称 Fused floating point datapath with correct rounding
摘要 In accordance with some embodiments, a floating point number datapath circuitry, e.g., within an integrated circuit programmable logic device is provided. The datapath circuitry may be used for computing a rounded absolute value of a mantissa of a floating point number. The floating point datapath circuitry may have only a single adder stage for computing a rounded absolute value of a mantissa of the floating point number based on one or more bits of an unrounded mantissa of the floating point number. The unrounded and rounded mantissas may include a sign bit, a sticky bit, a round bit, and/or a least significant bit, and/or other bits. The unrounded mantissa may be in a format that includes negative numbers (e.g., 2's complement) and the rounded mantissa may be in a format that may include a portion of the floating point number represented as a positive number, (e.g., signed magnitude).
申请公布号 US9348557(B1) 申请公布日期 2016.05.24
申请号 US201414187075 申请日期 2014.02.21
申请人 ALTERA CORPORATION 发明人 Langhammer Martin;Pasca Bogdan
分类号 G06F7/00;G06F7/483 主分类号 G06F7/00
代理机构 代理人
主权项 1. Floating point datapath circuitry, said datapath circuitry comprising: solely a single adder stage for computing a rounded absolute value of a mantissa of a floating point number based on at least two bits of an unrounded mantissa of the floating point number.
地址 San Jose CA US