SAS 在下面的 if 语句中将in_year_tolerance和abs_cost解释为文本变量。因此,if 语句正在测试变量的字母顺序而不是数字顺序。如何让 SAS 将它们视为数字?我尝试在 %sysevalf 中粘贴 if 条件和宏变量,但这没有区别。in_year_tolerance是 10,000,000,成本可能会有所不同,但在测试运行中,开始大约 20,000,000,然后下降到 9,000,000,此时它应该退出循环,但不会。
%macro set_downward_caps(year, in_year_tolerance, large, small, start, end, increment);
%do c = &start. %to &end. %by &increment.;
%let nominal_down_large_&year. = %sysevalf(&large. + (&c. / 1000));
%let nominal_down_small_&year. = %sysevalf(&small. + (&c. / 100));
%let real_down_large_&year. = %sysevalf((1 - &&nominal_down_large_&year.) * &&rpi&year.);
%let real_down_small_&year. = %sysevalf((1 - &&nominal_down_small_&year.) * &&rpi&year.);
%rates(&year.);
proc means data = output.s_&scenario. noprint nway;
var transbill&year.;
output out = temporary (drop = _type_ _freq_) sum=cost;
run;
data _null_;
set temporary;
call symputx('cost', put(cost,best32.));
run;
data temp;
length scenario $ 30;
scenario = "&scenario.";
large = &&real_down_large_&year.;
small = &&real_down_small_&year.;
cost = &cost.;
run;
data output.summary_of_caps;
set output.summary_of_caps temp;
run;
%let abs_cost = %sysevalf(%sysfunc(abs(&cost)));
%if &in_year_tolerance. > &abs_cost. %then %return;
%end;
%mend set_downward_caps;
使用 %sysevalf(&in_year_tolerance > &abs_cost,boolean)
.
如您所见,比较是基于文本的。 如果将其放在%eval()
或%sysevalf()
中,则值将被解释为数字。
,boolean
选项让它知道你想要一个真/假。