Search arithmetic library

[Yannick]

Hi,

I need to use the arithmetic library but I don't find it!

I need to use arithmetic.std_logic_arith and I don't want change for
another library.

Where I can find it?


Thks

 

[jeppe]

Hi

It properly depends on which enviroment (ISE) your using but try to include this in your source code.

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

Could be this in our case

library arithmetic;
use arithmetic.STD_LOGIC_ARITH.ALL;


Your welcome

 

[Tricky]

Hi,

I need to use the arithmetic library but I don't find it!

I need to use arithmetic.std_logic_arith and I don't want change for
another library.

Where I can find it?

Thks

std_logic_arith is usually in the ieee library.
But dont use that, use ieee.numeric_std instead.

 

[Andy Peters]

I need to use arithmetic.std_logic_arith

No, you don't ...

-a

 

[Yannick]

No, you don't ...

-a

I know that I can use iee library iee but this is not a acceptable
solution.
If you don't know where I can find it, please don't reply!

Nobody know where I can find this library ? (This is the question)

Thanks

 

[Jacko]

Hi,

I need to use the arithmetic library but I don't find it!

I need to use arithmetic.std_logic_arith and I don't want change for
another library.

Where I can find it?

Thks

Useually for standard libraries they will be in the ieee tree. I say
use which ever you want, they are very similar, but some type
conversion issues exist.

library ieee;

use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;

you could use ieee.numeric_std.all as well or instead of this will
slightly change the code needed, i.e. a slight cast changing, but not
much else will differ. The packages differ IIRC in that
std_logic_arith has arithmetic functions which produce
std_logic_vector, where as numeric_std is focused on producing numeric
results, which then can be cast/autocast to std_logic_vector.

There are many opinions, but i have had no concrete rational as to why
one is better than the other.

cheers jacko

 

[Yannick]

Useually for standard libraries they will be in the ieee tree. I say
use which ever you want, they are very similar, but some type
conversion issues exist.

library ieee;

use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;

you could use ieee.numeric_std.all as well or instead of this will
slightly change the code needed, i.e. a slight cast changing, but not
much else will differ. The packages differ IIRC in that
std_logic_arith has arithmetic functions which produce
std_logic_vector, where as numeric_std is focused on producing numeric
results, which then can be cast/autocast to std_logic_vector.

There are many opinions, but i have had no concrete rational as to why
one is better than the other.

cheers jacko

I try to simulate a old design on ACTEL. For safety and no more step,
I need to use the same
library than the first compilation in 1999.

I know ieee library and I use it for all my design but I can't to use
it here. I haven't any choice, it's the protocol.

Voila

thanks

yannick

 

[Yannick]

I would suggest you contact Actel Technical Support at (e-mail address removed),
they may be able to make obsolete versions of their design software
available to you,

regards
Alan

I try to contact us!!

Thanks