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PO
 

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  1. PO
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    <p>Yes and no.</p> <p>According to the <a href="http://docs.oracle.com/cd/B28359_01/server.111/b28318/datatype.htm#i22294" rel="nofollow">server docs on floats</a>, the 'native' C types support up to double precision (<code>BINARY_DOUBLE</code>). However, the <a href="http://docs.oracle.com/cd/B28359_01/server.111/b28318/datatype.htm#i22289" rel="nofollow">NUMBER</a> type can store:</p> <blockquote> <ul> <li>Positive numbers in the range 1 x 10-130 to 9.99...9 x 10125 with <strong>up to 38 significant digits</strong></li> <li>Negative numbers from -1 x 10-130 to 9.99...99 x 10125 with <strong>up to 38 significant digits</strong></li> </ul> </blockquote> <p>which is more precision than <code>long double</code> on x86/amd64.</p> <p>So, you'd need to use that type instead of <code>BINARY_*</code>. Sadly, the <a href="http://docs.oracle.com/cd/B28359_01/appdev.111/b28395/oci03typ.htm#autoId11" rel="nofollow">developer docs</a> say:</p> <blockquote> <p>You should not need to use <code>NUMBER</code> as an external datatype. If you do use it, Oracle returns numeric values in its internal 21-byte binary format and will expect this format on input. The following discussion is included for completeness only.</p> </blockquote> <p>On the other hand, there are also docs on:</p> <ul> <li><a href="http://docs.oracle.com/cd/B28359_01/appdev.111/b28395/oci12oty.htm#i434059" rel="nofollow">using the OCINumber</a> type; </li> <li><a href="http://docs.oracle.com/cd/B28359_01/appdev.111/b28395/oci19map003.htm#CEGCAEFC" rel="nofollow">OCI NUMBER Functions</a>.</li> </ul> <p>AFAICS <a href="http://docs.oracle.com/cd/B28359_01/appdev.111/b28395/oci19map003.htm#i455143" rel="nofollow">OCINumberFromReal()</a> supports <code>long double</code>; and if you want even more precision, then you could use <a href="http://docs.oracle.com/cd/B28359_01/appdev.111/b28395/oci19map003.htm#i460199" rel="nofollow">OCINumberFromText()</a> with decimal string.</p>
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    1. POOCI with long double
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    1. PTAnswer
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    1. USMichał Górny
    plurals
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    1. POOCI with long double
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    1. VO
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    1. COThanks a lot for your idea. :) As I'm new to this area,Appreciate if you can provide a link or some help on a sample code which provide a solution for my problem.
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      1. USAnupama Pathirage
    2. COI'm sorry but I didn't ever work with Oracle. But the first link in the bulleted list provides some lengthy example you could start with.
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      1. USMichał Górny
 

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