What is DataType R8, I2 and likes?
<p>I am trying to create an XML to be sent as request to a SOAP API. In the documentation its written,</p>

<p><a href="https://i.stack.imgur.com/4yWkB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4yWkB.png" alt="enter image description here"></a></p>

<p>What exactly are these types?</p>

<p>The only google result I got is: <a href="http://forums.asp.net/t/703915.aspx?what+datatype+is+it+dt+type+r8+" rel="nofollow noreferrer">http://forums.asp.net/t/703915.aspx?what+datatype+is+it+dt+type+r8+</a> How correct is this?</p>