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关于开方函数 Qsqrt

Other Parts Discussed in Thread: C2000WARE

各位,我想请教一下哪位用过Qsqrt这个开方函数,我目前已经包含了Qmath库了但编译还会报没有声明这个qsqrt函数。这个函数和sqrt有什么区别,在哪可以看到这个函数的原型?望高手不啬赐教!谢谢!