MSP430浮点运算库运算效率高吗,运算div=(float64_t)(freq / 32.768*4)大概需要多少指定周期可以完成?
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MSP430浮点运算库运算效率高吗,运算div=(float64_t)(freq / 32.768*4)大概需要多少指定周期可以完成?
硬件乘法器默认是只要做乘法,编译器都会调用MPY进行,整数乘法直接做,浮点乘法多了转换的步骤,但是这个过程中所用的在乘法均是有MPY完成的,用户看不到这个过程,默认情况下,编译器就这样编译。
另外推荐mspmathlib给您做个参考,如果要使用三角函数sin,cos,tan,asin,acos,atan等,算指数,取对数,平方根等,可以调用msp mathlib进行, 会提高运算效率,详情请见如下网址: