data _null_; 本博客所有内容是原创，如果转载请注明来源 http://blog.csdn.net/myhaspl/
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=;
本博客所有内容是原创，如果转载请注明来源
http://blog.csdn.net/myhaspl/
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
