prfp.htm

mips架构的bootloader,99左右的版本 但源代码现在没人更新了

<title>The prfp Command</title>
<h1 align=center>The prfp Command</h1>

<!--INDEX "prfp command" floating-point -->

</dl><h2>NAME</h2><dl><dd>
     prfp - convert between hex and floating-point

</dl><h2>SYNOPSIS</h2><dl><dd>
<pre>
prfp { [ -f ] fpvalue | [ hexvalue ] hexvalue }
</pre>


</dl><h2>DESCRIPTION</h2><dl><dd>
     prfp is a host-resident utility that
     converts between hex  and  floating-point.  It  handles
     both  single- and double-precision values. You can convert a
     floating-point value to hex, or a  hex  value  to  floating-
     point notation.

</dl><h2>OPTIONS</h2><dl><dd>
<table><tr><td valign=top>
     -f   </td><td>Specify that the input floating-point value is to  
     converted to single precision format.
</td></tr></table>

</dl><h2>EXAMPLES</h2><dl><dd>
     Convert the value 3.142 to hex using double  precision  for-
     mat.<p>

<pre>
     % prfp 3.142

     400922d0 e5604189 dp=3.142000e+00
</pre>

     Convert the value 3.142 to hex using single  precision  for-
     mat.<p>

<pre>
     % prfp -f 3.142

     40491687 sp=3.142000e+00
</pre>

     Convert the 64-bit  hex  value  to  floating-point  notation
     using double precision format.<p>

<pre>
     % prfp 400922d0 e5604189

     400922d0 e5604189 dp=3.142000e+00
</pre>

     Convert the 64-bit  hex  value  to  floating-point  notation
     using double precision format.<p>

<pre>
     % prfp 40491687

     40491687 sp=3.142000e+00
</pre>













</dl><p><hr>
<b>Navigation:</b> 
<a href="../index.htm">Document Home</a> | 
<a href="../doctoc.htm">Document Contents</a> | 
<a href="../docindex.htm">Document Index</a> <p>