发明授权
- 专利标题: Multipurpose arithmetic functional unit
- 专利标题(中): 多功能算术功能单元
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申请号: US10970253申请日: 2004-10-20
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公开(公告)号: US08190669B1公开(公告)日: 2012-05-29
- 发明人: Stuart F. Oberman , Ming Y. Siu
- 申请人: Stuart F. Oberman , Ming Y. Siu
- 申请人地址: US CA Santa Clara
- 专利权人: NVIDIA Corporation
- 当前专利权人: NVIDIA Corporation
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Kilpatrick Townsend & Stockton LLP
- 主分类号: G06F7/44
- IPC分类号: G06F7/44
摘要:
Multipurpose arithmetic functional units can perform planar attribute interpolation and unary function approximation operations. In one embodiment, planar interpolation operations for coordinates (x, y) are executed by computing A*x+B*y+C, and unary function approximation operations for operand x are executed by computing F2(xb)*xh2+F1(xb)*xh+F0(xb), where xh=x−xb. Shared multiplier and adder circuits are advantageously used to implement the product and sum operations for both classes of operations.