Description: The preparation of function double fun (double x, int m), its function is to float X retained a small number of M, the first M+1 bit rounded, such as the importation of 123.456, to retain two decimal output 123.46
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浮点数X保留M个小数
..................\浮点数X保留M个小数.CPP
..................\浮点数X保留M个小数.DSP
..................\浮点数X保留M个小数.DSW
..................\浮点数X保留M个小数.ncb
..................\浮点数X保留M个小数.OPT
..................\浮点数X保留M个小数.plg