LCS-2016-006b: Language Change Specification for TextIO Updates

This was done in the last revision, but it did not make it into the VHDL-2019 release.

Adding a bunch of functions in std.STANDARD:

• TO_DSTRING: bit_vector
• TO_BSTRING: universal_integer, integer, universal_real, real
• TO_OSTRING: universal_integer, integer, universal_real, real
• TO_HSTRING: universal_integer, integer, universal_real, real
• TO_STRING: universal_integer, integer, universal_real, real (overloaded versions)

Adding a bunch of procedures in std.TEXTIO:

• BREAD: integer
• OREAD: integer
• HREAD: integer
• DREAD: bit_vector
• BWRITE: integer
• OWRITE: integer
• HWRITE: integer
• DWRITE: integer, bit_vector

And here is the complete information:

• http://www.eda-twiki.org/cgi-bin/view.cgi/P1076/FileIo
• http://www.eda-twiki.org/cgi-bin/view.cgi/P1076/TopLCS2016_006b