This patch reworks much of the ternary code to short circuit when
possible and supports real values better. It adds a blend operator
for real values that returns 0.0 when the values differ and the value
when they match. This deviates slightly from the standard which
specifies that the value for reals is always 0.0 when the conditional
is 'bx. There are also a couple bug fixes.
These fixes have not been ported to continuous assignments yet.
Ternary operators used at compile time and in procedural assignments
should be complete (short circuit and support real values).
Rework the handling of file names to use a perm_string heap to hold
the file names, instead of the custom file name heap in the lexor.
Also rename the get_line to get_fileline to reflect its real duties.
This latter chage touched a lot of files.
Better handle cases where the scope part of a heirarchical name does
not match any existing scope, or where scope index expressions are
not correct.
Signed-off-by: Stephen Williams <steve@icarus.com>
Handle real valued expressions in vector declarations. Also clean
up the handling of vector declaration expressions.
Signed-off-by: Stephen Williams <steve@icarus.com>
Cary R
Larry Doolittle
Stephen Williams
steve