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FPA: Added conversion operator float -> float.

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Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
This commit is contained in:
Christoph M. Wintersteiger 2013-03-04 20:21:14 +00:00
parent 197b2e8ddb
commit e5f03f999a
4 changed files with 188 additions and 29 deletions
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23
src/ast/float_decl_plugin.cpp
View file

@ -353,27 +353,22 @@ func_decl * float_decl_plugin::mk_to_float(decl_kind k, unsigned num_parameters,
sort * fp = mk_float_sort(domain[2]->get_parameter(0).get_int(), domain[1]->get_parameter(0).get_int()+1);
symbol name("asFloat");
return m_manager->mk_func_decl(name, arity, domain, fp, func_decl_info(m_family_id, k, num_parameters, parameters));
}
}
else {
// .. Otherwise we only know how to convert rationals/reals.
if (!(num_parameters == 2 && parameters[0].is_int() && parameters[1].is_int()))
m_manager->raise_exception("expecting two integer parameters to asFloat");
if (arity != 2 && arity != 3)
m_manager->raise_exception("invalid number of arguments to asFloat operator");
if (!is_rm_sort(domain[0]) || domain[1] != m_real_sort)
if (arity == 3 && domain[2] != m_int_sort)
m_manager->raise_exception("sort mismatch");
if (!is_rm_sort(domain[0]) ||
!(domain[1] == m_real_sort || is_sort_of(domain[1], m_family_id, FLOAT_SORT)))
m_manager->raise_exception("sort mismatch");
if (arity == 2) {
sort * fp = mk_float_sort(parameters[0].get_int(), parameters[1].get_int());
symbol name("asFloat");
return m_manager->mk_func_decl(name, arity, domain, fp, func_decl_info(m_family_id, k, num_parameters, parameters));
}
else {
if (domain[2] != m_int_sort)
m_manager->raise_exception("sort mismatch");
sort * fp = mk_float_sort(parameters[0].get_int(), parameters[1].get_int());
symbol name("asFloat");
return m_manager->mk_func_decl(name, arity, domain, fp, func_decl_info(m_family_id, k, num_parameters, parameters));
}
sort * fp = mk_float_sort(parameters[0].get_int(), parameters[1].get_int());
symbol name("asFloat");
return m_manager->mk_func_decl(name, arity, domain, fp, func_decl_info(m_family_id, k, num_parameters, parameters));
}
}

23
src/ast/rewriter/float_rewriter.cpp
View file

@ -77,14 +77,23 @@ br_status float_rewriter::mk_to_float(func_decl * f, unsigned num_args, expr * c
return BR_FAILED;
rational q;
if (!m_util.au().is_numeral(args[1], q))
mpf q_mpf;
if (m_util.au().is_numeral(args[1], q)) {
mpf v;
m_util.fm().set(v, ebits, sbits, rm, q.to_mpq());
result = m_util.mk_value(v);
m_util.fm().del(v);
return BR_DONE;
}
else if (m_util.is_value(args[1], q_mpf)) {
mpf v;
m_util.fm().set(v, ebits, sbits, rm, q_mpf);
result = m_util.mk_value(v);
m_util.fm().del(v);
return BR_DONE;
}
else
return BR_FAILED;
mpf v;
m_util.fm().set(v, ebits, sbits, rm, q.to_mpq());
result = m_util.mk_value(v);
m_util.fm().del(v);
return BR_DONE;
}
else if (num_args == 3 &&
m_util.is_rm(m().get_sort(args[0])) &&