mf_isrealvalues.hlp

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

{smcl}
{* 06jan2005}{...}
{cmd:help mata isrealvalues()}
{hline}
{* index isrealvalues()}{...}

{title:Title}

{p 4 8 2}
{bf:[M-5] isrealvalues() -- Whether matrix contains only real values}


{title:Syntax}

{p 8 8 2}
{it:real scalar}
{cmd:isrealvalues(}{it:numeric matrix X}{cmd:)}


{title:Description}

{p 4 4 2}
{cmd:isrealvalues(}{it:X}{cmd:)}
returns 1 if {it:X} is of storage type real
or if {it:X} is of storage type complex and all elements are real or missing;
0 is returned otherwise.


{title:Remarks}

{p 4 4 2}
{cmd:isrealvalues(}{it:X}{cmd:)} is logically equivalent to 
{it:X}{cmd:==Re(}{it:X}{cmd:)} but is significantly faster and requires 
less memory.


{title:Conformability}

    {cmd:isrealvalues(}{it:X}{cmd:)}:
		{it:X}:  {it:r x c}
	   {it:result}:  1 {it:x} 1


{title:Diagnostics}

{p 4 4 2}
{cmd:isrealvalues(}{it:X}{cmd:)} returns 1 if {it:X} is void and complex.


{title:Source code}

{p 4 4 2}
Function is built-in.


{title:Also see}

{p 4 13 2}
Manual:  {hi:[M-5] isrealvalues()}

{p 4 13 2}
Online:  help for 
{bf:{help mf_isreal:[M-5] isreal()}};
{bf:{help m4_utility:[M-4] utility}}
{p_end}