公开(公告)号：US20170090871A1

公开(公告)日：2017-03-30

申请号：US14883889

申请日：2015-10-15

申请人： VIA Alliance Semiconductor Co., Ltd.

发明人： Wei WANG ,  Xinan JIANG ,  Chengxin YIN ,  Huaisheng ZHANG ,  Tian SHEN ,  Bing YU

IPC分类号： G06F7/548

CPC分类号： G06F7/548

摘要： A method for computing trigonometric functions, performed by an ALU (Arithmetic Logic Unit) in coordination with an SFU (Special Function Unit), is introduced to contain at least the following steps. The ALU computes a remainder r and a reduction value x* corresponding to an input parameter x. The SFU computes an intermediate function f(x*) corresponding to the reduction value x*. The ALU computes a multiplication of the reduction value x* by the intermediate function f(x*) as the computation result of a trigonometric function.