HLS Blocksets - 2022.2 English

Table 1. Logic and Bit Operations
Block	Description
Bit Concat	Perform bitwise concatenation of input values into a single output value
Bit Slice	Extract a range of bits from a value
Bitwise AND	Perform element and bitwise Boolean AND operation on the inputs
Bitwise NOT	Perform element and bitwise Boolean NOT operation on the input
Bitwise OR	Perform element and bitwise Boolean OR operation on the inputs
Bitwise XOR	Perform element and bitwise Boolean XOR operation on the inputs
Logical AND	Performs element-wise logical AND operation on inputs
Logical NOT	Performs element-wise logical NOT operation on the input
Logical OR	Performs element-wise logical OR operation on inputs
Reduction AND	Compute bitwise AND of the elements of the input over all dimensions or over a specified dimension
Reduction OR	Compute bitwise OR of the elements of the input over all dimensions or over a specified dimension
Reduction XOR	Compute bitwise XOR of the elements of the input over all dimensions or over a specified dimension
Shift Left	Perform logical shift left of input over a constant number of bit positions specified by a non-negative integer mask parameter
Shift Right	Perform logical shift right of input over a constant number of bit positions specified by a non-negative integer mask parameter

Table 2. Lookup Tables
Block	Description
Lookup Table	Perform one-dimensional lookup operation with an input index

Table 3. Math Functions / Math Operations
Block	Description
Abs	Compute element-wise absolute value of input signal
atan	Compute element-wise inverse tangent of input signal
atan2	Compute element-wise four-quadrant inverse tangent of input signal
Complex to Polar	Element-wise conversion of complex input signals into magnitude and radiant phase angle
Complex to Real-Imag	Output real and imaginary parts of complex input signal
Conjugate	Apply element-wise complex conjugate operation to the input signal
Cosine	Element-wise computation of the cosine function for a given argument
cosh	Element-wise computation of the hyperbolic cosine for a given argument
Cumulative Sum	Compute the cumulative sum along the specified dimension of the input
Divide	Perform element-wise division
Exp	Perform an element-wise exponential value of the input
Gain	Multiply the input signal with a constant gain factor.
Log	Compute element-wise natural logarithm of input
Log10	Compute element wise base 10 logarithm of input
Max	Computes the maximum value of an input or element-wise maximum value of multiple inputs.
Min	Computes the minimum value of an input or element-wise minimum value of multiple inputs.
Modulus	Perform element-wise modulus operation on the input signals
Negate	Perform element-wise unary minus operation on the input data
Polar to Complex	Element-wise conversion of real magnitude and angle representation signals into a complex signal
Pow	Compute the element-wise power function
Product	Compute element-wise product of the input signals
Product of Elements	Multiply the elements of the input signal
Real-Imag to Complex	Convert real and/or imaginary inputs to complex signal
Reciprocal	Perform element-wise computation of the reciprocal for a given argument
Reciprocal Sqrt	Perform element-wise computation of the reciprocal square root for a given argument
Remainder	Perform element-wise division on the input signal, and the output is the remainder after the division
Reshape Row-Major	Changes the input dimensions in row-major order.
Signum	Perform an element-wise signum function (sign extraction)
Sine	Element-wise computation of the sine function for the given input
sinh	Element-wise computation of the hyperbolic sine for a given argument
Sqrt	Element-wise computation of the square root for a given argument
Subtract	Perform an element-wise subtraction
Sum	Performs element-wise addition of two input signals
Sum of Elements	Perform element-wise addition on the input, column-wise, row-wise, or in all-dimensions
Tangent	Perform an element-wise computation of the tangent function for the given argument

Table 4. Math Functions / Matrices and Linear Algebra
Block	Description
Hermitian	Perform element-wise conjugate transpose operation on the input signal
Matrix Multiply	Compute matrix product of two input signals
QR Inverse	Compute the inverse of a matrix using QR factorization
Submatrix	Select a subset of elements (submatrix) from matrix input
Transpose	Perform an element-wise transpose operation on the input signal

Table 5. Ports and Subsystems
Block	Description
If	Model `if-else` control flow
In1	Create input port for subsystem or external input
Out1	Create output port for subsystem or external output
Action Port	Implement Action subsystems used in `if` and `switch` control flow statements
Window Processing	Assemble an output matrix by applying the kernel subsystem to submatrices (windows) of the input matrix in row-major order

Table 6. Relational Operations
Block	Description
Equals	Perform element-wise equal to relational operation on the inputs
Greater	Perform element-wise greater than relational operation on the inputs
Greater Equals	Perform element-wise greater than or equal relational operation on the inputs
Lesser	Perform element-wise less than relational operation on the inputs
Lesser Equals	Perform element-wise less than or equal relational operation on the inputs
Not Equals	Perform element-wise not equal to relational operation on the inputs

Table 7. Signal Attributes
Block	Description
Data Type Conversion	Convert the input to the data type of the output
Reinterpret	Element-wise reinterpretation of the input type into a compatible output type with the same bit width

Table 8. Signal Operations
Block	Description
Delay	Delay input signal by specified number of samples
Unit Delay	Provides a delay of one sample period

Table 9. Signal Routing
Block	Description
Bus Creator	Create Signal Bus
Bus Selector	Select signals from incoming bus
Conditional	Pass through input T when control input satisfies a selected criterion; otherwise, pass through input F
Demux	Separates a vector input into a number of scalar and vector outputs
From	Accept input from Goto block
Goto	Pass block input to From blocks
Merge	Combine multiple signals into single signal
Mux	Combines scalar and vector inputs into a larger vector output

Table 10. Sinks
Block	Description
Display	Show value of input
Scope	Display signals generated during simulation
Stop Simulation	Stop simulation when input is nonzero
Terminator	Terminate unconnected output port
To File	Write data to file
To Workspace	Write data to workspace

Table 11. Source
Block	Description
Constant	Generates the constant specified by the `Constant Value` parameter

Table 12. Tools
Block	Description
DocBlock	Create text that documents model and save text with model
Interface Spec	Specify the RTL interfaces for a subsystem
Vitis Model Composer Hub	Control implementation of the model

Table 13. User-Defined Functions
Block	Description
DocBlock	Create text that documents model and save text with model
HLS Kernel	Import an HLS kernel code with a streaming interface.