systemsoftware
/
Programming-Guides
34
1
Fork 0
Code Issues 17 Pull Requests Projects Releases Wiki Activity

Add examples for vec_unsigned{e,o}

Browse Source 
Add simple examples for `vec_unsignede` and `vec_unsignedo`,
making sure to show undefined results and negative truncation.

Fixes #29.

Signed-off-by: Paul A. Clarke <pc@us.ibm.com>
pull/69/head
Paul Clarke 5 years ago committed by Bill Schmidt
parent d939b73aac
commit d8bf0dad66
1 changed files with 94 additions and 0 deletions
Show Stats Download Patch File Download Diff File

94
Intrinsics_Reference/ch_vec_reference.xml
Unescape Escape View File

@ -36501,6 +36501,53 @@ xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="VIPR.vec-ref">
3 of <emphasis role="bold">r</emphasis> are undefined. Truncation
of a negative number to an unsigned integer results in a value of
zero.</para>
<para>An example follows:
<informaltable frame="all">
<tgroup cols="5">
<colspec colname="c0" colwidth="20*" />
<colspec colname="c1L" colwidth="10*" />
<colspec colname="c1R" colwidth="10*" />
<colspec colname="c2L" colwidth="10*" />
<colspec colname="c2R" colwidth="10*" />
<spanspec spanname="c1" namest="c1L" nameend="c1R"/>
<spanspec spanname="c2" namest="c2L" nameend="c2R"/>
<tbody>
<row>
<entry align="center" valign="middle">
<para> <emphasis role="bold">a</emphasis> </para>
</entry>
<entry align="center" spanname="c1" valign="middle">
<para>1.0</para>
</entry>
<entry align="center" spanname="c2" valign="middle">
<para>-1.0</para>
</entry>
</row>
<row>
<entry align="center" valign="middle">
<para> <emphasis role="bold">r</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para>00000001</para>
</entry>
<entry align="center" valign="middle">
<para>????????</para>
<para><emphasis>(undefined)</emphasis></para>
</entry>
<entry align="center" valign="middle">
<para>00000000</para>
<para><emphasis>(truncation of a negative number to unsigned is 0)</emphasis></para>
</entry>
<entry align="center" valign="middle">
<para>????????</para>
<para><emphasis>(undefined)</emphasis></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.
@ -36591,6 +36638,53 @@ xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="VIPR.vec-ref">
and 2 of <emphasis role="bold">r</emphasis> are undefined. Truncation
of a negative number to an unsigned integer results in a value of
zero.</para>
<para>An example follows:
<informaltable frame="all">
<tgroup cols="5">
<colspec colname="c0" colwidth="20*" />
<colspec colname="c1L" colwidth="10*" />
<colspec colname="c1R" colwidth="10*" />
<colspec colname="c2L" colwidth="10*" />
<colspec colname="c2R" colwidth="10*" />
<spanspec spanname="c1" namest="c1L" nameend="c1R"/>
<spanspec spanname="c2" namest="c2L" nameend="c2R"/>
<tbody>
<row>
<entry align="center" valign="middle">
<para> <emphasis role="bold">a</emphasis> </para>
</entry>
<entry align="center" spanname="c1" valign="middle">
<para>1.0</para>
</entry>
<entry align="center" spanname="c2" valign="middle">
<para>-1.0</para>
</entry>
</row>
<row>
<entry align="center" valign="middle">
<para> <emphasis role="bold">r</emphasis> </para>
</entry>
<entry align="center" valign="middle">
<para>????????</para>
<para><emphasis>(undefined)</emphasis></para>
</entry>
<entry align="center" valign="middle">
<para>00000001</para>
</entry>
<entry align="center" valign="middle">
<para>????????</para>
<para><emphasis>(undefined)</emphasis></para>
</entry>
<entry align="center" valign="middle">
<para>00000000</para>
<para><emphasis>(truncation of a negative number to unsigned is 0)</emphasis></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.

Write Preview
Loading…
Cancel
Save