发明授权
- 专利标题： Arithmetic processing unit that performs multiply and multiply-add operations with saturation and method therefor
- 专利标题（中）： 使用饱和度进行乘法和乘法运算的算术处理单元及其方法
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申请号： US12472715申请日： 2009-05-27
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公开(公告)号： US08316071B2公开(公告)日： 2012-11-20
- 发明人: Kevin A. Hurd , Scott A. Hilker
- 申请人： Kevin A. Hurd , Scott A. Hilker
- 申请人地址： US CA Sunnyvale
- 专利权人： Advanced Micro Devices, Inc.
- 当前专利权人： Advanced Micro Devices, Inc.
- 当前专利权人地址： US CA Sunnyvale
- 主分类号： G06F7/38
- IPC分类号： G06F7/38 ; G06F9/44
摘要：
Sum and carry signals are formed representing a product of a first and a second operand. A bias signal is formed having a value determined by a sign of a product of the first and the second operand. An output signal is provided based on an addition of the sum signal, the carry signal, a sign-extended addend, and the bias signal. A portion of the output signal, a saturated minimum value, or a saturated maximum value, is selected as a final result based on the sign of the product and a sign of the output signal.
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