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Add examples for vec_extract_fp32_from_short{h,l} 

Also added table headers to more clearly indicate element ordering.

Fixes #17.

Signed-off-by: Paul A. Clarke <pc@us.ibm.com>
pull/69/head
Paul Clarke 3 years ago committed by Bill Schmidt
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1 changed files with 248 additions and 0 deletions
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  1. 248
      Intrinsics_Reference/ch_vec_reference.xml

248
Intrinsics_Reference/ch_vec_reference.xml
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@ -13388,6 +13388,130 @@ xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="VIPR.vec-ref"> @@ -13388,6 +13388,130 @@ xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="VIPR.vec-ref">
interpreted as 16-bit floating-point numbers in IEEE format, and
extended to single-precision format, returning a vector with four
single-precision IEEE numbers.</para>
<para>An example follows:
<informaltable frame="all">
<tgroup cols="9">
<colspec colname="c0" colwidth="20*" />
<colspec colname="c1" colwidth="10*" />
<colspec colname="c2" colwidth="10*" />
<colspec colname="c3" colwidth="10*" />
<colspec colname="c4" colwidth="10*" />
<colspec colname="c5" colwidth="10*" />
<colspec colname="c6" colwidth="10*" />
<colspec colname="c7" colwidth="10*" />
<colspec colname="c8" colwidth="10*" />
<spanspec spanname="w1" namest="c1" nameend="c2"/>
<spanspec spanname="w2" namest="c3" nameend="c4"/>
<spanspec spanname="w3" namest="c5" nameend="c6"/>
<spanspec spanname="w4" namest="c7" nameend="c8"/>
<thead>
<row>
<entry align="center" valign="middle">
<para> <emphasis>halfword index</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>0</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>1</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>2</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>3</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>4</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>5</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>6</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>7</emphasis> </para>
</entry>
</row>
<row>
<entry align="center" valign="middle">
<para> <emphasis>word index</emphasis> </para>
</entry>
<entry spanname="w1" align="center" valign="middle">
<para> <emphasis>0</emphasis> </para>
</entry>
<entry spanname="w2" align="center" valign="middle">
<para> <emphasis>1</emphasis> </para>
</entry>
<entry spanname="w3" align="center" valign="middle">
<para> <emphasis>2</emphasis> </para>
</entry>
<entry spanname="w4" align="center" valign="middle">
<para> <emphasis>3</emphasis> </para>
</entry>
</row>
</thead>
<tbody>
<row>
<entry align="center" valign="middle">
<para> <emphasis role="bold">a</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para>3800</para>
<para>(0.5)</para>
</entry>
<entry align="center" valign="middle">
<para>4200</para>
<para>(3.0)</para>
</entry>
<entry align="center" valign="middle">
<para>4700</para>
<para>(7.0)</para>
</entry>
<entry align="center" valign="middle">
<para>4B80</para>
<para>(15.0)</para>
</entry>
<entry align="center" valign="middle">
<para>4FC0</para>
<para>(31.0)</para>
</entry>
<entry align="center" valign="middle">
<para>53E0</para>
<para>(63.0)</para>
</entry>
<entry align="center" valign="middle">
<para>57F0</para>
<para>(127.0)</para>
</entry>
<entry align="center" valign="middle">
<para>5BF8</para>
<para>(255.0)</para>
</entry>
</row>
<row>
<entry align="center" valign="middle">
<para> <emphasis role="bold">r</emphasis> </para>
</entry>
<entry spanname="w1" align="center" valign="middle">
<para>0.5</para>
</entry>
<entry spanname="w2" align="center" valign="middle">
<para>3.0</para>
</entry>
<entry spanname="w3" align="center" valign="middle">
<para>7.0</para>
</entry>
<entry spanname="w4" align="center" valign="middle">
<para>15.0</para>
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>

<para><emphasis role="bold">Endian considerations:</emphasis>
The element numbering within a register is left-to-right for big-endian
targets, and right-to-left for little-endian targets.
@ -13489,6 +13613,130 @@ xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="VIPR.vec-ref"> @@ -13489,6 +13613,130 @@ xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="VIPR.vec-ref">
interpreted as 16-bit floating-point numbers in IEEE format, and
extended to single-precision format, returning a vector with four
single-precision IEEE numbers.</para>
<para>An example follows:
<informaltable frame="all">
<tgroup cols="9">
<colspec colname="c0" colwidth="20*" />
<colspec colname="c1" colwidth="10*" />
<colspec colname="c2" colwidth="10*" />
<colspec colname="c3" colwidth="10*" />
<colspec colname="c4" colwidth="10*" />
<colspec colname="c5" colwidth="10*" />
<colspec colname="c6" colwidth="10*" />
<colspec colname="c7" colwidth="10*" />
<colspec colname="c8" colwidth="10*" />
<spanspec spanname="w1" namest="c1" nameend="c2"/>
<spanspec spanname="w2" namest="c3" nameend="c4"/>
<spanspec spanname="w3" namest="c5" nameend="c6"/>
<spanspec spanname="w4" namest="c7" nameend="c8"/>
<thead>
<row>
<entry align="center" valign="middle">
<para> <emphasis>halfword index</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>0</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>1</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>2</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>3</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>4</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>5</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>6</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para> <emphasis>7</emphasis> </para>
</entry>
</row>
<row>
<entry align="center" valign="middle">
<para> <emphasis>word index</emphasis> </para>
</entry>
<entry spanname="w1" align="center" valign="middle">
<para> <emphasis>0</emphasis> </para>
</entry>
<entry spanname="w2" align="center" valign="middle">
<para> <emphasis>1</emphasis> </para>
</entry>
<entry spanname="w3" align="center" valign="middle">
<para> <emphasis>2</emphasis> </para>
</entry>
<entry spanname="w4" align="center" valign="middle">
<para> <emphasis>3</emphasis> </para>
</entry>
</row>
</thead>
<tbody>
<row>
<entry align="center" valign="middle">
<para> <emphasis role="bold">a</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para>3800</para>
<para>(0.5)</para>
</entry>
<entry align="center" valign="middle">
<para>4200</para>
<para>(3.0)</para>
</entry>
<entry align="center" valign="middle">
<para>4700</para>
<para>(7.0)</para>
</entry>
<entry align="center" valign="middle">
<para>4B80</para>
<para>(15.0)</para>
</entry>
<entry align="center" valign="middle">
<para>4FC0</para>
<para>(31.0)</para>
</entry>
<entry align="center" valign="middle">
<para>53E0</para>
<para>(63.0)</para>
</entry>
<entry align="center" valign="middle">
<para>57F0</para>
<para>(127.0)</para>
</entry>
<entry align="center" valign="middle">
<para>5BF8</para>
<para>(255.0)</para>
</entry>
</row>
<row>
<entry align="center" valign="middle">
<para> <emphasis role="bold">r</emphasis> </para>
</entry>
<entry spanname="w1" align="center" valign="middle">
<para>31.0</para>
</entry>
<entry spanname="w2" align="center" valign="middle">
<para>63.0</para>
</entry>
<entry spanname="w3" align="center" valign="middle">
<para>127.0</para>
</entry>
<entry spanname="w4" align="center" valign="middle">
<para>255.0</para>
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>

<para><emphasis role="bold">Endian considerations:</emphasis>
The element numbering within a register is left-to-right for big-endian
targets, and right-to-left for little-endian targets.

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