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more fpa

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This commit is contained in:
Nikolaj Bjorner 2020-09-30 19:06:07 -07:00
parent 6708a764f5
commit 4cb07a539b
6 changed files with 91 additions and 68 deletions
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55
src/smt/theory_fpa.h
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@ -23,64 +23,11 @@ Revision History:
#include "ast/fpa/fpa2bv_converter.h"
#include "ast/fpa/fpa2bv_rewriter.h"
#include "ast/rewriter/th_rewriter.h"
#include "model/value_factory.h"
#include "model/fpa_factory.h"
#include "smt/smt_model_generator.h"
namespace smt {
class fpa_value_factory : public value_factory {
fpa_util m_util;
virtual app * mk_value_core(mpf const & val, sort * s) {
SASSERT(m_util.get_ebits(s) == val.get_ebits());
SASSERT(m_util.get_sbits(s) == val.get_sbits());
return m_util.mk_value(val);
}
public:
fpa_value_factory(ast_manager & m, family_id fid) :
value_factory(m, fid),
m_util(m) {}
~fpa_value_factory() override {}
expr * get_some_value(sort * s) override {
mpf_manager & mpfm = m_util.fm();
if (m_util.is_rm(s))
return m_util.mk_round_toward_zero();
else
{
scoped_mpf q(mpfm);
mpfm.set(q, m_util.get_ebits(s), m_util.get_sbits(s), 0);
return m_util.mk_value(q);
}
}
bool get_some_values(sort * s, expr_ref & v1, expr_ref & v2) override {
mpf_manager & mpfm = m_util.fm();
if (m_util.is_rm(s))
v1 = v2 = m_util.mk_round_toward_zero();
else
{
scoped_mpf q(mpfm);
mpfm.set(q, m_util.get_ebits(s), m_util.get_sbits(s), 0);
v1 = m_util.mk_value(q);
mpfm.set(q, m_util.get_ebits(s), m_util.get_sbits(s), 1);
v2 = m_util.mk_value(q);
}
return true;
}
expr * get_fresh_value(sort * s) override { return get_some_value(s); }
void register_value(expr * n) override { /* Ignore */ }
app * mk_value(mpf const & x) {
return m_util.mk_value(x);
}
};
class theory_fpa : public theory {
protected:
typedef trail_stack<theory_fpa> th_trail_stack;