Add Const: Difference between revisions

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[[Category:Block Docs]]
[[Category:Block Docs]]
Adds a constant value to each item that passes though.  output[m] = input[m] + constant vector.
This block adds a constant value to each item that passes through it.   
output[m] = input[m] + constant vector


== Parameters ==
== Parameters ==
(''R''): <span class="plainlinks">[https://wiki.gnuradio.org/index.php/GNURadioCompanion#Variable_Controls ''Run-time adjustable'']</span>
(''R''): <span class="plainlinks">[https://wiki.gnuradio.org/index.php/GNURadioCompanion#Variable_Controls ''Run-time adjustable'']</span>
; IO Type
: Supported data types
:* Complex
:* Float
:* Int
:* Short


; Constant (''R'')
; Constant (''R'')
: The entered value must be of the same type as the input / output ports (i.e. complex, float, etc.).
: The value to be added to the input stream. It must be of the same type as the block IO type.
 
; Vec Length
: Length of the vector


== Example Flowgraph ==
== Example Flowgraph ==


This flowgraph shows the Add Const block adding a -1.0 to the stream.
This flowgraph shows the use of the Add Const and the Multiply blocks to create an amplitude modulated signal.
 
[[File:Multiply_block_fg.png|600px]]


[[File:Complex_to_Mag.png|800px]]
[[File:Multiply_Block_out.png|600px]]


== Source Files ==
== Source Files ==


; C++ files
; C++ files
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_bb_impl.cc Byte I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_bb_impl.cc add_const_bb_impl.cc]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_cc_impl.cc Complex I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_cc_impl.cc add_const_cc_impl.cc]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_ff_impl.cc Float I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_ff_impl.cc add_const_ff_impl.cc]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_ii_impl.cc Int I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_ii_impl.cc add_const_ii_impl.cc]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_ss_impl.cc Short I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_ss_impl.cc add_const_ss_impl.cc]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_v_impl.cc Vector I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_v_impl.cc add_const_v_impl.cc]


; Header files
; Header files
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_bb_impl.h Byte I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_bb_impl.h add_const_bb_impl.h]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_cc_impl.h Complex I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_cc_impl.h add_const_cc_impl.h]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_ff_impl.h Float I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_ff_impl.h add_const_ff_impl.h]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_ii_impl.h Int I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_ii_impl.h add_const_ii_impl.h]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_ss_impl.h Short I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_ss_impl.h add_const_ss_impl.h]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/lib/add_const_v_impl.h Vector I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/lib/add_const_v_impl.h add_const_v_impl.h]


; Public header files
; Public header files
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/include/gnuradio/blocks/add_const_bb.h Byte I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/include/gnuradio/blocks/add_const_bb.h add_const_bb.h]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/include/gnuradio/blocks/add_const_cc.h Complex I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/include/gnuradio/blocks/add_const_cc.h add_const_cc.h]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/include/gnuradio/blocks/add_const_ff.h Float I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/include/gnuradio/blocks/add_const_ff.h add_const_ff.h]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/include/gnuradio/blocks/add_const_ii.h Int I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/include/gnuradio/blocks/add_const_ii.h add_const_ii.h]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/include/gnuradio/blocks/add_const_ss.h Short I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/include/gnuradio/blocks/add_const_ss.h add_const_ss.h]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/include/gnuradio/blocks/add_const_v.h Vector I/O]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/include/gnuradio/blocks/add_const_v.h add_const_v.h]


; Block definition
; Block definition
: [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/grc/blocks_add_const_vxx.block.yml]
: [https://github.com/gnuradio/gnuradio/blob/main/gr-blocks/grc/blocks_add_const_vxx.block.yml blocks_add_const_vxx.block.yml]

Latest revision as of 09:30, 25 August 2022

This block adds a constant value to each item that passes through it. output[m] = input[m] + constant vector

Parameters

(R): Run-time adjustable

IO Type
Supported data types
  • Complex
  • Float
  • Int
  • Short
Constant (R)
The value to be added to the input stream. It must be of the same type as the block IO type.
Vec Length
Length of the vector

Example Flowgraph

This flowgraph shows the use of the Add Const and the Multiply blocks to create an amplitude modulated signal.

Multiply block fg.png

Multiply Block out.png

Source Files

C++ files
add_const_bb_impl.cc
add_const_cc_impl.cc
add_const_ff_impl.cc
add_const_ii_impl.cc
add_const_ss_impl.cc
add_const_v_impl.cc
Header files
add_const_bb_impl.h
add_const_cc_impl.h
add_const_ff_impl.h
add_const_ii_impl.h
add_const_ss_impl.h
add_const_v_impl.h
Public header files
add_const_bb.h
add_const_cc.h
add_const_ff.h
add_const_ii.h
add_const_ss.h
add_const_v.h
Block definition
blocks_add_const_vxx.block.yml