[vhdl-200x-ft] New numeric_std fast track proposal

From: David Bishop <dbishop@server.vhdl.org>
Date: Mon Oct 25 2004 - 13:23:07 PDT

To be added to the numeric_std proposals.
These are changes I have already made. Please comment.

     1) Added functions "add_sign" and "remove_sign" to convert between
        SIGNED and UNSIGNED types. "add_sign" would add a '0' sign bit
        and increase the vector by 1 bit. "remove_sign" would do an "abs"
        and remove the sign bit, shrinking the vector by 1 bit.
     2) Modify all of the "asserts" from the package to be of the format
        assert XXX report "NUMERIC_STD.Function: error message".
        So that you can tell what package/function the error is coming from.
     3) Add aliases for the "to_StdLogicVector" function which are "to_slv"
        and "to_std_logic_vector".
     4) Add aliases for the "to_StdULogicVector" function which are "to_sulv",
        and "to_std_ulogic_vector".
     5) Add aliases for the "to_bitvector" function which are "to_bv" and
        "to_bit_vector"
     6) Modify the "end" for each function and procedure to read
        "end function function_name" and "end procedure procedure_name".

-- 
David W. Bishop dbishop@vhdl.org       All standard disclaimers apply.

ID:	  N-009

Proposed by:  David Bishop  03/05/2003
Analyzed by:  
Resolved:     

Summary:  
    Minor changes to the numeric packages

Detail:
    1) Added functions "add_sign" and "remove_sign" to convert between
       SIGNED and UNSIGNED types. "add_sign" would add a '0' sign bit
       and increase the vector by 1 bit. "remove_sign" would do an "abs"
       and remove the sign bit, shrinking the vector by 1 bit.
    2) Modify all of the "asserts" from the package to be of the format
       assert XXX report "NUMERIC_STD.Function: error message".
       So that you can tell what function/package the error is comming from.
    3) Add aliases for the "to_StdLogicVector" function which are "to_slv"
       and "to_std_logic_vector".
    4) Add aliases for the "to_StdULogicVector" function which are "to_sulv",
       and "to_std_ulogic_vector".
    5) Add aliases for the "to_bitvector" function which are "to_bv" and
       "to_bit_vector"
    6) Modify the "end" for each function and procedure to read
       "end function function_name" and "end procedure procedure_name".

Analysis:
[To be performed by the Working Group]

Resolution:
[To be determined by the Working Group]

---

Back to the numeric package proposals
Please send feedback to David Bishop dbishop@vhdl.org

Received on Mon Oct 25 13:23:12 2004