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在CLA Reference Guide中,在介绍CLA特点时,有一句1/X and 1/sqrt(X) estimations是什么意思?
C28x不支持硬件除法和开方取倒数运算,CLA有这样的指令可以在单周期内硬件完成这样的运算。
C28 FPU 和CLA 对1/X 和1/sqrt(X)操作一样
除法:Z = Y/X = Y * 1/X
平方根:Y = SQRT(X) = X * 1/sqrt(X)
CLA 没有的是取模, 例如:
5/3 = 1 , 5%3 = 2
CLA是32bit 浮点处理器。可以轻松处理您提到的两个函数