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FP to BV translation of UFs refactored.

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This commit is contained in:
Christoph M. Wintersteiger 2016-05-22 18:16:57 +01:00
parent 8db17311ae
commit d4bc8ebb70
7 changed files with 136 additions and 402 deletions
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23
src/ast/fpa/fpa2bv_rewriter.cpp
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@ -56,7 +56,10 @@ bool fpa2bv_rewriter_cfg::max_steps_exceeded(unsigned num_steps) const {
br_status fpa2bv_rewriter_cfg::reduce_app(func_decl * f, unsigned num, expr * const * args, expr_ref & result, proof_ref & result_pr) {
TRACE("fpa2bv_rw", tout << "APP: " << f->get_name() << std::endl; );
TRACE("fpa2bv_rw", tout << "func: " << f->get_name() << std::endl;
tout << "args: " << std::endl;
for (unsigned i = 0; i < num; i++)
tout << mk_ismt2_pp(args[i], m()) << std::endl;);
if (num == 0 && f->get_family_id() == null_family_id && m_conv.is_float(f->get_range())) {
m_conv.mk_const(f, result);
@ -166,12 +169,11 @@ br_status fpa2bv_rewriter_cfg::reduce_app(func_decl * f, unsigned num, expr * co
NOT_IMPLEMENTED_YET();
}
}
else if (f->get_arity() > 0 && !m_conv.is_float_family(f)) {
expr_ref q(m().mk_app(f, num, args), m());
if (m_conv.fu().contains_floats(q)) {
m_conv.mk_function(f, num, args, result);
return BR_DONE;
}
else
{
SASSERT(!m_conv.is_float_family(f));
m_conv.mk_function(f, num, args, result);
return BR_DONE;
}
return BR_FAILED;
@ -247,10 +249,9 @@ bool fpa2bv_rewriter_cfg::reduce_var(var * t, expr_ref & result, proof_ref & res
unsigned ebits = m_conv.fu().get_ebits(s);
unsigned sbits = m_conv.fu().get_sbits(s);
new_var = m().mk_var(t->get_idx(), m_conv.bu().mk_sort(sbits+ebits));
m_conv.mk_fp(m_conv.bu().mk_extract(sbits+ebits-1, sbits+ebits-1, new_var),
m_conv.bu().mk_extract(ebits - 1, 0, new_var),
m_conv.bu().mk_extract(sbits+ebits-2, ebits, new_var),
new_exp);
new_exp = m_conv.fu().mk_fp(m_conv.bu().mk_extract(sbits+ebits-1, sbits+ebits-1, new_var),
m_conv.bu().mk_extract(ebits - 1, 0, new_var),
m_conv.bu().mk_extract(sbits+ebits-2, ebits, new_var));
}
else
new_exp = m().mk_var(t->get_idx(), s);