数学之路-sas备忘(18)，之路-sas备忘18

数学之路-sas备忘(18)，之路-sas备忘18

data _null_;
x=15.63;
y=15.13;


xx=ceil(x);
yy=ceil(y);
put xx= yy=;


xx=floor(x);
yy=floor(y);
put xx= yy=;


xx=int(x);
yy=int(y);
put xx= yy=;


xx=round(x,0.1);
yy=round(y,0.1);
put xx= yy=;


z=trunc(1/3,3);*按3个字节存储;
put z=;

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z=trunc(1/3,6);*按6个字节存储;
put z=;


run;
输出:xx=16 yy=16
xx=15 yy=15
xx=15 yy=15
xx=15.6 yy=15.1
z=0.3333129883
z=0.3333333333