Evaluate <= with real operands.
This commit is contained in:
steve
parent
a4d69e08da
commit
8352c91b0a
239
eval_tree.cc
239
eval_tree.cc
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@ -1,5 +1,5 @@
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/*
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* Copyright (c) 1999-2000 Stephen Williams (steve@icarus.com)
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* Copyright (c) 1999-2003 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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@ -17,7 +17,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CVS_IDENT
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#ident "$Id: eval_tree.cc,v 1.53 2003/06/04 01:26:17 steve Exp $"
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#ident "$Id: eval_tree.cc,v 1.54 2003/06/05 04:28:24 steve Exp $"
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#endif
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# include "config.h"
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@ -241,8 +241,69 @@ NetEConst* NetEBComp::eval_less_()
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return new NetEConst(result);
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}
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NetEConst* NetEBComp::eval_leeq_real_()
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{
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NetEConst*vtmp;
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NetECReal*rtmp;
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double lv, rv;
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switch (left_->expr_type()) {
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case ET_REAL:
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rtmp = dynamic_cast<NetECReal*> (left_);
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if (rtmp == 0)
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return 0;
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lv = rtmp->value().as_double();
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break;
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case ET_VECTOR:
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vtmp = dynamic_cast<NetEConst*> (left_);
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if (vtmp == 0)
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return 0;
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lv = vtmp->value().as_long();
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break;
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default:
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assert(0);
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}
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switch (right_->expr_type()) {
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case ET_REAL:
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rtmp = dynamic_cast<NetECReal*> (right_);
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if (rtmp == 0)
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return 0;
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rv = rtmp->value().as_double();
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break;
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case ET_VECTOR:
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vtmp = dynamic_cast<NetEConst*> (right_);
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if (vtmp == 0)
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return 0;
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rv = vtmp->value().as_long();
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break;
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default:
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assert(0);
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}
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verinum result((lv <= rv)? verinum::V1 : verinum::V0, 1);
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vtmp = new NetEConst(result);
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vtmp->set_line(*this);
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return vtmp;
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}
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NetEConst* NetEBComp::eval_leeq_()
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{
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if (right_->expr_type() == ET_REAL)
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return eval_leeq_real_();
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if (left_->expr_type() == ET_REAL)
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return eval_leeq_real_();
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NetEConst*r = dynamic_cast<NetEConst*>(right_);
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if (r == 0) return 0;
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@ -252,9 +313,8 @@ NetEConst* NetEBComp::eval_leeq_()
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return new NetEConst(result);
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}
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if (left_->expr_width() == 0) {
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cerr << get_line() << ": internal error: Something wrong"
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cerr << get_line() << ": internal error: Something wrong "
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<< "with the left side width of <= ?" << endl;
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cerr << get_line() << ": : " << *this << endl;
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}
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@ -1398,6 +1458,9 @@ NetEConst* NetEUReduce::eval_tree()
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/*
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* $Log: eval_tree.cc,v $
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* Revision 1.54 2003/06/05 04:28:24 steve
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* Evaluate <= with real operands.
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*
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* Revision 1.53 2003/06/04 01:26:17 steve
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* internal error for <= expression errors.
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*
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@ -1412,173 +1475,5 @@ NetEConst* NetEUReduce::eval_tree()
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* Revision 1.50 2003/04/14 03:40:21 steve
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* Make some effort to preserve bits while
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* operating on constant values.
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*
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* Revision 1.49 2003/03/15 18:07:58 steve
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* More resilient WRT right expression width of GT.
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*
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* Revision 1.48 2003/03/10 23:40:53 steve
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* Keep parameter constants for the ivl_target API.
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*
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* Revision 1.47 2003/02/07 02:47:58 steve
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* NetEBDiv handles real value constant expressions.
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*
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* Revision 1.46 2003/01/30 16:23:07 steve
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* Spelling fixes.
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*
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* Revision 1.45 2003/01/27 05:09:17 steve
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* Spelling fixes.
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*
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* Revision 1.44 2002/12/05 02:14:33 steve
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* Support bit select in constant expressions.
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*
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* Revision 1.43 2002/11/09 01:40:19 steve
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* Postpone parameter width check to evaluation.
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*
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* Revision 1.42 2002/10/19 22:59:49 steve
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* Redo the parameter vector support to allow
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* parameter names in range expressions.
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*
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* Revision 1.41 2002/08/12 01:34:59 steve
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* conditional ident string using autoconfig.
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*
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* Revision 1.40 2002/05/25 16:43:47 steve
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* Eval ^ and &0 expressions.
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*
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* Revision 1.39 2002/05/06 02:30:27 steve
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* Allow parameters in concatenation of widths are defined.
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*
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* Revision 1.38 2002/05/05 21:11:50 steve
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* Put off evaluation of concatenation repeat expresions
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* until after parameters are defined. This allows parms
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* to be used in repeat expresions.
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*
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* Add the builtin $signed system function.
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*
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* Revision 1.37 2002/04/27 05:03:46 steve
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* Preserve stringiness string part select and concatenation.
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*
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* Revision 1.36 2002/04/27 03:17:15 steve
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* Fixup eval of signed constants.
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*
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* Revision 1.35 2002/04/24 02:47:02 steve
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* Fix compile time eval of signed <= signed.
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*
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* Revision 1.34 2002/04/14 19:28:47 steve
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* Fix constant evaluation of unary
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*
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* Revision 1.33 2002/02/01 05:09:14 steve
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* Propagate sign in unary minus.
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*
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* Revision 1.32 2002/01/22 01:40:04 steve
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* Precalculate constant results of memory index expressions.
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*
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* Revision 1.31 2001/12/30 00:39:25 steve
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* Evaluate constant unary minus.
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*
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* Revision 1.30 2001/12/03 04:47:15 steve
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* Parser and pform use hierarchical names as hname_t
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* objects instead of encoded strings.
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*
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* Revision 1.29 2001/11/19 01:54:14 steve
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* Port close cropping behavior from mcrgb
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* Move window array reset to libmc.
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*
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* Revision 1.28 2001/10/22 15:31:21 steve
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* fix constant overrun in | operands.
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*
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* Revision 1.27 2001/10/20 00:11:24 steve
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* Evaluate constant == when operands differ in width.
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*
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* Revision 1.26 2001/07/25 03:10:49 steve
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* Create a config.h.in file to hold all the config
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* junk, and support gcc 3.0. (Stephan Boettcher)
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*
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* Revision 1.25 2001/07/16 20:41:41 steve
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* Handle 0 counts in repeat concatenation.
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*
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* Revision 1.24 2001/02/10 20:29:39 steve
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* In the context of range declarations, use elab_and_eval instead
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* of the less robust eval_const methods.
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*
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* Revision 1.23 2001/02/09 05:44:23 steve
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* support evaluation of constant < in expressions.
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*
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* Revision 1.22 2001/02/07 02:46:31 steve
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* Support constant evaluation of / and % (PR#124)
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*
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* Revision 1.21 2001/01/14 23:04:56 steve
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* Generalize the evaluation of floating point delays, and
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* get it working with delay assignment statements.
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*
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* Allow parameters to be referenced by hierarchical name.
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*
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* Revision 1.20 2001/01/04 16:49:50 steve
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* Evaluate constant === and !== expressions.
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*
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* Revision 1.19 2001/01/04 04:28:42 steve
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* Evaluate constant logical && and ||.
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*
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* Revision 1.18 2001/01/02 04:21:14 steve
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* Support a bunch of unary operators in parameter expressions.
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*
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* Revision 1.17 2001/01/02 03:23:40 steve
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* Evaluate constant &, | and unary ~.
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*
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* Revision 1.16 2001/01/01 21:49:33 steve
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* Fix shift and ternary operators in parameter expressions (PR#86)
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*
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* Revision 1.15 2000/12/16 20:00:17 steve
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* Handle non-constant l-values.
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*
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* Revision 1.14 2000/12/16 19:03:30 steve
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* Evaluate <= and ?: in parameter expressions (PR#81)
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*
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* Revision 1.13 2000/09/29 04:42:56 steve
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* Cnstant evaluation of NE.
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*
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* Revision 1.12 2000/09/27 18:28:37 steve
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* multiply in parameter expressions.
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*
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* Revision 1.11 2000/07/07 04:53:54 steve
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* Add support for non-constant delays in delay statements,
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* Support evaluating ! in constant expressions, and
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* move some code from netlist.cc to net_proc.cc.
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*
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* Revision 1.10 2000/04/28 18:43:23 steve
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* integer division in expressions properly get width.
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*
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* Revision 1.9 2000/03/08 04:36:53 steve
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* Redesign the implementation of scopes and parameters.
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* I now generate the scopes and notice the parameters
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* in a separate pass over the pform. Once the scopes
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* are generated, I can process overrides and evalutate
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* paremeters before elaboration begins.
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*
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* Revision 1.8 2000/02/23 02:56:54 steve
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* Macintosh compilers do not support ident.
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*
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* Revision 1.7 2000/01/13 03:35:35 steve
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* Multiplication all the way to simulation.
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*
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* Revision 1.6 1999/10/22 23:57:53 steve
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* do the <= in bits, not numbers.
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*
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* Revision 1.5 1999/10/10 23:29:37 steve
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* Support evaluating + operator at compile time.
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*
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* Revision 1.4 1999/09/23 03:56:57 steve
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* Support shift operators.
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*
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* Revision 1.3 1999/09/23 00:21:54 steve
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* Move set_width methods into a single file,
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* Add the NetEBLogic class for logic expressions,
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* Fix error setting with of && in if statements.
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*
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* Revision 1.2 1999/09/21 00:13:40 steve
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* Support parameters that reference other paramters.
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*
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* Revision 1.1 1999/09/20 02:21:10 steve
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* Elaborate parameters in phases.
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*
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*/
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@ -19,7 +19,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CVS_IDENT
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#ident "$Id: netlist.h,v 1.288 2003/05/30 02:55:32 steve Exp $"
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#ident "$Id: netlist.h,v 1.289 2003/06/05 04:28:24 steve Exp $"
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#endif
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/*
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@ -2477,6 +2477,7 @@ class NetEBComp : public NetEBinary {
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NetEConst*eval_eqeq_();
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NetEConst*eval_less_();
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NetEConst*eval_leeq_();
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NetEConst*eval_leeq_real_();
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NetEConst*eval_gt_();
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NetEConst*eval_gteq_();
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NetEConst*eval_neeq_();
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@ -3303,6 +3304,9 @@ extern ostream& operator << (ostream&, NetNet::Type);
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/*
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* $Log: netlist.h,v $
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* Revision 1.289 2003/06/05 04:28:24 steve
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* Evaluate <= with real operands.
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*
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* Revision 1.288 2003/05/30 02:55:32 steve
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* Support parameters in real expressions and
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* as real expressions, and fix multiply and
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