This block is listed in the following Xilinx Blockset libraries: Floating-Point, Math and Index.
The Xilinx Negate block computes the arithmetic negation of its input.
Block Parameters
The block parameters dialog box can be invoked by double-clicking the icon in your Simulink® model.
- Basic tab
- Parameters specific to the Basic tab are as follows.
- Precision
- This parameter allows you to specify the output precision for
fixed-point arithmetic. Floating point output always has
Full precision.
- Full
- The block uses sufficient precision to represent the result without error.
- User Defined
- If you do not need full precision, this option allows you to specify a reduced number of total bits and/or fractional bits.
- Fixed-Point Output Type
-
Arithmetic Type
- Signed (2’s comp)
- The output is a Signed (2’s complement) number.
- Unsigned
- The output is an Unsigned number.
- Fixed-point Precision
-
- Number of bits
- Specifies the bit location of the binary point of the output number, where bit zero is the least significant bit.
- Binary point
- Position of the binary point in the fixed-point output.
- Quantization
- Refer to the section Overflow and Quantization in the topic Common Options in Block Parameter Dialog Boxes.
- Overflow
- Refer to the section Overflow and Quantization in the topic Common Options in Block Parameter Dialog Boxes.
- Optional Port
- Provide enable port
- Latency
- This defines the number of sample periods by which the block's output is delayed.
Parameters used by this block are explained in the topic Common Options in Block Parameter Dialog Boxes.