1. Forum
  2. Usenet
  3. COMP.LANG.VHDL

  • 64 Bit Integers

    From Rick C@21:1/5 to All on Tue Sep 29 09:03:37 2020
    I know the standard requires 32 bit signed integer range, but does not restrict vendors from supplying larger ranges. However extending the range of "integer" may break existing code. Is there any consideration to a new data type which would be larger
    integers? Then the usages would be independent and not subject to breaking existing code.

    I think the same thing applies to the REAL type. It's just that many languages allow simple indication of the size of integer and real you wish to work with. Why is this so hard to figure out in HDL?

    --

    Rick C.

    - Get 1,000 miles of free Supercharging
    - Tesla referral code - https://ts.la/richard11209

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From KJ@21:1/5 to [email protected] on Thu Oct 1 03:39:39 2020
    On Tuesday, September 29, 2020 at 12:03:42 PM UTC-4, [email protected] wrote:
    I know the standard requires 32 bit signed integer range, but does not restrict vendors from supplying larger ranges. However extending the range of "integer" may break existing code. Is there any consideration to a new data type which would be larger
    integers? Then the usages would be independent and not subject to breaking existing code.

    Larger integers were added to VHDL-2019

    Kevin Jennings

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From KJ@21:1/5 to All on Thu Oct 1 04:43:52 2020
    On Thursday, October 1, 2020 at 6:39:42 AM UTC-4, KJ wrote:
    On Tuesday, September 29, 2020 at 12:03:42 PM UTC-4, [email protected] wrote:
    I know the standard requires 32 bit signed integer range, but does not restrict vendors from supplying larger ranges. However extending the range of "integer" may break existing code. Is there any consideration to a new data type which would be
    larger integers? Then the usages would be independent and not subject to breaking existing code.
    Larger integers were added to VHDL-2019

    Specifically, VHDL-2019 defines...
    The range of INTEGER is implementation dependent and shall include the range –(2^63) to (2^63)–1 inclusive.

    Kevin Jennings

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Rick C@21:1/5 to All on Thu Oct 1 08:02:02 2020
    On Thursday, October 1, 2020 at 7:43:55 AM UTC-4, KJ wrote:
    On Thursday, October 1, 2020 at 6:39:42 AM UTC-4, KJ wrote:
    On Tuesday, September 29, 2020 at 12:03:42 PM UTC-4, [email protected] wrote:
    I know the standard requires 32 bit signed integer range, but does not restrict vendors from supplying larger ranges. However extending the range of "integer" may break existing code. Is there any consideration to a new data type which would be
    larger integers? Then the usages would be independent and not subject to breaking existing code.
    Larger integers were added to VHDL-2019

    Specifically, VHDL-2019 defines...
    The range of INTEGER is implementation dependent and shall include the range –(2^63) to (2^63)–1 inclusive.

    Kevin Jennings

    Ok, that's great. Now we just need to wait for the various vendors to embrace the new standard.

    Thanks, I'm not sure how I was not aware this standard had been approved. I'm sure it was mentioned here. I see in searches it covers some new aspects of interfaces. I should read up on that to see if it is useful for me.

    --

    Rick C.

    + Get 1,000 miles of free Supercharging
    + Tesla referral code - https://ts.la/richard11209

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)