f_sum.ihlp

来自「是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到」· IHLP 代码 · 共 7 行

{* 30nov2004}{...}
{phang}
{cmd:sum(}{it:x}{cmd:)} returns the running sum of {it:x}
	treating {it:missing} ({hi:.}) values as zero.  See
	{helpb egen} for an alternative sum function that produces a
	constant equal to the overall sum.{p_end}