https://forge.codesys.com/forge/talk/CODESYS-V2/thread/4b094c86bc/2020-02-27T20:06:37.502000ZRecent posts to Confusion with Lreal to dword2020-02-27T20:06:37.502000Z2020-02-27T20:06:37.502000Zsarathbabuhttps://forge.codesys.com/u/sarathbabu/https://forge.codesys.comc270fe92bb52e41387f52537946682f3f42169bf

<div class="markdown_content"><p>Yes declaring it as integer is the problem.<br/> Actually i do not need decimal points thats y i tried this conversion</p> <p>Thank u</p></div>

2020-02-27T20:06:33.708000Z2020-02-27T20:06:33.708000Zshooterhttps://forge.codesys.com/u/shooter/https://forge.codesys.com65e03f2dc5306a2662b8359f86170c9be5abe081

<div class="markdown_content"><p>rounding up a value is simpler with round from the oscat lib.<br/> it is more predictable, and the way it should be done.<br/> you are doing a trick and suppose the conversion is good, but a real is totally different from a word.<br/> the biggest problem is you do not know how 3 is declared as a byte or as a word or anything.<br/> so make all variables declared this way the result is predicatable.</p></div>

2020-02-27T20:06:32.266000Z2020-02-27T20:06:32.266000Zchabhttps://forge.codesys.com/u/chab/https://forge.codesys.comd18ec0eb2fdb4944edfe683ae0539022f9378522

<div class="markdown_content"><p>Maybe (3/5) is handled as an integer first. Which results in 0.</p> <p>Try it with a variable like:</p> <div class="codehilite"><pre><span></span><span class="n">var_in</span><span class="o">:</span> <span class="n">lreal</span> <span class="o">:=</span> <span class="mi">0</span><span class="o">;</span> <span class="n">var_out</span> <span class="o">:</span> <span class="n">dword</span> <span class="o">:=</span> <span class="mi">0</span><span class="o">;</span> <span class="n">var_in</span> <span class="o">=</span> <span class="mi">3</span> <span class="o">/</span> <span class="mi">5</span><span class="o">;</span> <span class="n">var_out</span> <span class="o">:=</span> <span class="n">Lreal_to_dword</span><span class="o">(</span><span class="k">in</span><span class="o">:=</span><span class="n">var_in</span><span class="o">);</span> </pre></div> </div>

2020-02-27T20:06:30.958000Z2020-02-27T20:06:30.958000Zsarathbabuhttps://forge.codesys.com/u/sarathbabu/https://forge.codesys.com8c8ec1d94a5419582f8885915716e76893d23e12

<div class="markdown_content"><p>When ever am using this in program, it is supposed to round up the value and give answer</p> <p>eg:Lreal_to_dword(in:=(3/5))</p> <p>answer to this is supposed to be 1 but some how in my program it is zero,Can any help me on this</p> <p>Thanks<br/> Sarath</p></div>