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Fix for github issue #6. 

When creating a constant zero for implementing a unary minus operation
using a binary subtraction operator, the constant needs to be to exactly
the expression width.
This commit is contained in:
Martin Whitaker 2014-01-05 20:53:58 +00:00
parent 336b29955d
commit d1c9dd554b
1 changed files with 2 additions and 2 deletions
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4
netmisc.cc
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2001-2013 Stephen Williams (steve@icarus.com) * Copyright (c) 2001-2014 Stephen Williams (steve@icarus.com)
* *
* This source code is free software; you can redistribute it * This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU * and/or modify it in source code form under the terms of the GNU
@ -48,7 +48,7 @@ NetNet* sub_net_from(Design*des, NetScope*scope, long val, NetNet*sig)
} else { } else {
verinum zero ((int64_t)val); verinum zero ((int64_t)val);
zero = pad_to_width(zero, sig->vector_width()); zero = cast_to_width(zero, sig->vector_width());
zero.has_sign(sig->get_signed()); zero.has_sign(sig->get_signed());
NetConst*zero_obj = new NetConst(scope, scope->local_symbol(), zero); NetConst*zero_obj = new NetConst(scope, scope->local_symbol(), zero);
zero_obj->set_line(*sig); zero_obj->set_line(*sig);