发明授权
- 专利标题: Area efficient transcendental estimate algorithm
- 专利标题(中): 区域有效超验估计算法
-
申请号: US11851658申请日: 2007-09-07
-
公开(公告)号: US08275821B2公开(公告)日: 2012-09-25
- 发明人: Eric Oliver Mejdrich , Adam James Muff , Matthew Ray Tubbs
- 申请人: Eric Oliver Mejdrich , Adam James Muff , Matthew Ray Tubbs
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Patterson & Sheridan, LLP
- 主分类号: G06F7/38
- IPC分类号: G06F7/38 ; G06F1/02
摘要:
A method, computer-readable medium, and an apparatus for generating a transcendental value. The method includes receiving an input containing an input value and an opcode and determining whether the opcode corresponds to a trigonometric operation or a power-of-two operation. The method also includes calculating a fractional value and an integer value from the input value, generating the transcendental value based on the fractional value by adding at least a portion of the fractional value with at least one of a shifted fractional value produced by shifting the portion of the fractional value and a constant value, and providing the transcendental value in response to the request. In this fashion, the same circuit area may be used to carry out both trigonometric and power-of-two calculations, leading to greater circuit area savings and performance advantages while not sacrificing significant accuracy.
公开/授权文献
信息查询