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Overview
Comment:Fix a typo in the RTREE documentation.
Timelines: family | ancestors | descendants | both | trunk
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SHA1:9ceaba9f7f831c8fca0daa978b4363e5c508bfd7
User & Date: drh 2013-08-19 14:26:23
Context
2013-08-20
17:06
Fix typos in the cache_spill pragma documentation. check-in: 4bfef7edb7 user: drh tags: trunk
2013-08-19
21:17
Initial docs for tointeger() and toreal() SQL functions. check-in: 083cd58817 user: mistachkin tags: toTypeFuncs
14:26
Fix a typo in the RTREE documentation. check-in: 9ceaba9f7f user: drh tags: trunk
2013-08-17
17:56
Add documentation for the cache_spill pragma. check-in: 74740a2d9e user: drh tags: trunk
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Changes to pages/rtree.in.

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<p>
The default virtual table ("rtree") normally stores coordinates as
single-precision (4-byte) floating point numbers.  If integer coordinates
are desired, declare the table using "rtree_i32" instead:

<blockquote><pre>
CREATE VIRTUAL TABLE intrtree USING rtree_i32(id,x0,x1,y0,y1,z0,y1);
</pre></blockquote>

<p>
An rtree_i32 stores coordinates as 32-bit signed integers.  But it still
using floating point computations internally as part of the r-tree algorithm.
For applications running on processors without hardware floating point,
it might be desirable to have a pure integer implementation of r-trees.







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<p>
The default virtual table ("rtree") normally stores coordinates as
single-precision (4-byte) floating point numbers.  If integer coordinates
are desired, declare the table using "rtree_i32" instead:

<blockquote><pre>
CREATE VIRTUAL TABLE intrtree USING rtree_i32(id,x0,x1,y0,y1,z0,z1);
</pre></blockquote>

<p>
An rtree_i32 stores coordinates as 32-bit signed integers.  But it still
using floating point computations internally as part of the r-tree algorithm.
For applications running on processors without hardware floating point,
it might be desirable to have a pure integer implementation of r-trees.