1.8 KiB
1.8 KiB
Range
Versioned name: Range-1
Category: Generation
Short description: Range operation generates a sequence of numbers according input values [start, stop) with a step.
Attributes:
No attributes available.
Inputs:
- 1: "start" - A scalar of type T. Required.
- 2: "stop" - A scalar of type T. Required.
- 3: "step" - A scalar of type T. Required.
Outputs:
- 1: A tensor of type T.
Types
- T: any numeric type.
Detailed description:
Range operation generates a sequence of numbers starting from the value in the first input (start) up to but not including the value in the second input (stop) with a step equal to the value in the third input, according to the following formula:
For a positive step:
\f[ start<=val[i]<stop, \f]
for a negative step:
\f[ start>=val[i]>stop, \f]
where
\f[ val[i]=start+i*step \f]
Examples
Example 1: positive step
<layer ... type="Range">
<input>
<port id="0"> <!-- start value: 2 -->
</port>
<port id="1"> <!-- stop value: 23 -->
</port>
<port id="2"> <!-- step value: 3 -->
</port>
</input>
<output>
<port id="3">
<dim>7</dim> <!-- [ 2, 5, 8, 11, 14, 17, 20] -->
</port>
</output>
</layer>
Example 2: negative step
<layer ... type="Range">
<input>
<port id="0"> <!-- start value: 23 -->
</port>
<port id="1"> <!-- stop value: 2 -->
</port>
<port id="2"> <!-- step value: -3 -->
</port>
</input>
<output>
<port id="3">
<dim>7</dim> <!-- [23, 20, 17, 14, 11, 8, 5] -->
</port>
</output>
</layer>