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TM4C浮点运算问题



    angle= atan2((double)y,(double)x) * (180 / 3.14159265) + 180; // angle in degrees

用TM4C做了上门的公式的运算,结果程序直接进入错误中断了,这个是什么问题呢?51都不会出错的,这个芯片应该没有这么水吧。。