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   1 <?xml version="1.0"?>
   2 <!--
   3 ###################################################
   4 ##Add Const Block:
   5 ##      all types, 1 output, 1 input & const
   6 ###################################################
   7  -->
   8 <block>
   9         <name>Add Const</name>
  10         <key>gr_add_const_vxx</key>
  11         <import>from gnuradio import gr</import>
  12         <make>gr.add_const_v$(type.fcn)($const)</make>
  13         <callback>set_k($const)</callback>
  14         <param>
  15                 <name>IO Type</name>
  16                 <key>type</key>
  17                 <type>enum</type>
  18                 <option>
  19                         <name>Complex</name>
  20                         <key>complex</key>
  21                         <opt>const_type:complex_vector</opt>
  22                         <opt>fcn:cc</opt>
  23                 </option>
  24                 <option>
  25                         <name>Float</name>
  26                         <key>float</key>
  27                         <opt>const_type:real_vector</opt>
  28                         <opt>fcn:ff</opt>
  29                 </option>
  30                 <option>
  31                         <name>Int</name>
  32                         <key>int</key>
  33                         <opt>const_type:int_vector</opt>
  34                         <opt>fcn:ii</opt>
  35                 </option>
  36                 <option>
  37                         <name>Short</name>
  38                         <key>short</key>
  39                         <opt>const_type:int_vector</opt>
  40                         <opt>fcn:ss</opt>
  41                 </option>
  42         </param>
  43         <param>
  44                 <name>Constant</name>
  45                 <key>const</key>
  46                 <value>0</value>
  47                 <type>$type.const_type</type>
  48         </param>
  49         <param>
  50                 <name>Vec Length</name>
  51                 <key>vlen</key>
  52                 <value>1</value>
  53                 <type>int</type>
  54         </param>
  55         <check>len($const) == $vlen</check>
  56         <check>$vlen &gt; 0</check>
  57         <sink>
  58                 <name>in</name>
  59                 <type>$type</type>
  60                 <vlen>$vlen</vlen>
  61         </sink>
  62         <source>
  63                 <name>out</name>
  64                 <type>$type</type>
  65                 <vlen>$vlen</vlen>
  66         </source>
  67 </block>