Contents
- 1 How does the Verilog operator yield the remainder?
- 2 What’s the output of the random range in Verilog?
- 3 How to truncate an expression bit width in Verilog?
- 4 When to use define or define in Verilog?
- 5 How to find modulus without using modulus operator?
- 6 Which is slower a subroutine or modulus without division?
How does the Verilog operator yield the remainder?
Verilog – Operators Arithmetic Operators (cont.) Modulus operator yields the remainder from division of two numbers It works like the modulus operator in C Modulus is synthesible 3 % 2; //evaluates to 1 16 % 4; //evaluates to 0 -7 % 2; //evaluates to -1, takes sign of first operand 7 % -2; //evaluates to 1, takes sign of first operand
What’s the output of the random range in Verilog?
In C I know if I write number%10 then output is between 0 and 9. But I tried in Verilog and result I am getting is between -9 and 9? Why is that?
Can a modulus operator return a negative number?
Modulus can return negative numbers as clearly stated in Verilog’s IEEE Std 1364-2001 § 4.1.5 Arithmetic operators as well as SystemVerilog’s IEEE Std 1800-2012 § 11.4.3 Arithmetic operators. The result of a modulus operation shall take the sign of the first operand.
How to truncate an expression bit width in Verilog?
If some of the bits may be nonzero then I would suggest still using an intermediate net like @dwikle suggested in a previous answer, since it makes it more clear that you are actually throwing away bits. Here it is again for reference. I think that this might help keep the line count down.
When to use define or define in Verilog?
Like the C compiler directive, `define is global for the compilation. If your code is ever going to be used with code you don’t control you will need to be careful here. Parameters are always local to the module scope so identically named parameters in different design elements will not conflict with each other.
How to access the MSB and LSB in Verilog?
Remember that with Verilog you are not working with computer programs, you aren’t doing things in a procedural fashion, but rather describing hardware. If you want to access the MSB’s or the LSB’s, you can simply describe that – access them directly with the range selection operator ( [MSB:LSB]) or part selection operator ( [LSB+:WIDTH] ).
How to find modulus without using modulus operator?
To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information. Please try again later. 7 % 5 = 2 Dividing 7 by 5 we get remainder 2. 4 % 2 = 0 4 is even as remainder is 0. Let the two given numbers be x and n.
Which is slower a subroutine or modulus without division?
On a 3 Ghz dual-core Intel Core i3 machine, this improved code averages 21 nanoseconds slower than a subroutine using the built-in mod operation, less than half the overhead of the original code presented above. The exercise we went through to identify the maximum values in each field is not pointless, but it is hard work.