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Digital Reversed Order (G Dataflow)

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Last Modified: January 12, 2018

Modifies the input array according to the digital-reversed order of the index.

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input array

The real input array this node modifies. The length of input array must be an integer power of radix.

This input accepts the following data types:
  • 1D array of double-precision, floating-point numbers
  • 1D array of complex double-precision, floating-point numbers
  • 1D array of 32-bit signed integers
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radix

Base of the exponent. radix must be greater than or equal to 2.

Default: 2

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error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

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reversed array

The input array with modified elements.

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reversed indices

Corresponding index of the input array for each element in the output array.

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error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Algorithm for Calculating reversed array

When the index of a sequence has the radix-base digits (a0a1...an), this node modifies the sequence X into the digital-reversed sequence Y according to the following equation:

Y ( a 0 a 1 … a n ) = X ( a n a n − 1 … a 0 )

For examples of radix-base digits, 2-base is binary and 16-base is hexadecimal.

The following illustration shows the 2-base reversed order (bit-reversed order) of 8 elements.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application

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