[vhdl-200x-ft] More ideas on 1164 and 1076.3

I'm doing testing now on the new "std_logic_1164", "numeric_std",
"numeric_bit", and "numeric_unsigned". We should be releasing
these packages to the web page for people to beat on shortly.
Note that as of last night, "std_logic_textio" is an empty package
with all of its contents moved into "std_logic_1164".

In browsing through some code, I have noticed a procedure called
"to_slv" cropping up all over the place. This appears to really
be calling "to_stdlogicvector", but people don't want to spell it
out.

<proposal>
Add an alias to "std_logic_1164" and "numeric_std" called "to_slv"
which calls "to_stdLogicVector".
</proposal>

Any thoughts? to_stdulogicvector? to_bitvector?

Another one is that in the numeric_std package, often you need
to do operations on both signed and unsigned numbers. The way
we handle this now with casting is clumsy.

<proposal>
Add the following functions to numeric_std and numeric_bit:
   function "+"(L : UNSIGNED; R: SIGNED) return SIGNED;
   function "+"(L : SIGNED; R: UNSIGNED) return SIGNED;
   function "-"(L : UNSIGNED; R: SIGNED) return SIGNED;
   function "-"(L : SIGNED; R: UNSIGNED) return SIGNED;
   function "*"(L : UNSIGNED; R: SIGNED) return SIGNED;
   function "*"(L : SIGNED; R: UNSIGNED) return SIGNED;
   function "/"(L : UNSIGNED; R: SIGNED) return SIGNED;
   function "/"(L : SIGNED; R: UNSIGNED) return SIGNED;
   function "rem"(L : UNSIGNED; R: SIGNED) return SIGNED;
   function "rem"(L : SIGNED; R: UNSIGNED) return SIGNED;
   function "mod"(L : UNSIGNED; R: SIGNED) return SIGNED;
   function "mod"(L : SIGNED; R: UNSIGNED) return SIGNED;
   function "="(L : UNSIGNED; R: SIGNED) return boolean;
   function "="(L : SIGNED; R: UNSIGNED) return boolean;
   function "/="(L : UNSIGNED; R: SIGNED) return boolean;
   function "/="(L : SIGNED; R: UNSIGNED) return boolean;
   function "<"(L : UNSIGNED; R: SIGNED) return boolean;
   function "<"(L : SIGNED; R: UNSIGNED) return boolean;
   function ">"(L : UNSIGNED; R: SIGNED) return boolean;
   function ">"(L : SIGNED; R: UNSIGNED) return boolean;
   function ">="(L : UNSIGNED; R: SIGNED) return boolean;
   function ">="(L : SIGNED; R: UNSIGNED) return boolean;
   function "<="(L : UNSIGNED; R: SIGNED) return boolean;
   function "<="(L : SIGNED; R: UNSIGNED) return boolean;
</proposal>

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