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Bugfix for fp.to_ieee_bv for unspecified input/output.

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This commit is contained in:
Christoph M. Wintersteiger 2016-03-15 14:38:11 +00:00
parent 5463167a84
commit 176782d62b
5 changed files with 20 additions and 4 deletions
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15
src/ast/fpa/fpa2bv_converter.cpp
View file

@ -2925,11 +2925,22 @@ void fpa2bv_converter::mk_to_fp_unsigned(func_decl * f, unsigned num, expr * con
mk_ite(c1, v1, v2, result);
}
expr_ref fpa2bv_converter::mk_to_ieee_bv_unspecified(unsigned width) {
if (m_hi_fp_unspecified)
return expr_ref(m_bv_util.mk_numeral(0, width), m);
else
return expr_ref(m_util.mk_internal_to_ieee_bv_unspecified(width), m);
}
void fpa2bv_converter::mk_to_ieee_bv(func_decl * f, unsigned num, expr * const * args, expr_ref & result) {
SASSERT(num == 1);
expr_ref x(m), x_is_nan(m);
expr * sgn, * s, * e;
split_fp(args[0], sgn, e, s);
result = m_bv_util.mk_concat(m_bv_util.mk_concat(sgn, e), s);
x = args[0];
split_fp(x, sgn, e, s);
mk_is_nan(x, x_is_nan);
result = m.mk_ite(x_is_nan, mk_to_ieee_bv_unspecified(m_bv_util.get_bv_size(x)),
m_bv_util.mk_concat(m_bv_util.mk_concat(sgn, e), s));
}
void fpa2bv_converter::mk_to_bv(func_decl * f, unsigned num, expr * const * args, bool is_signed, expr_ref & result) {

1
src/ast/fpa/fpa2bv_converter.h
View file

@ -136,6 +136,7 @@ public:
expr_ref mk_to_ubv_unspecified(unsigned width);
expr_ref mk_to_sbv_unspecified(unsigned width);
expr_ref mk_to_ieee_bv_unspecified(unsigned width);
expr_ref mk_to_real_unspecified();
void reset(void);

4
src/ast/fpa/fpa2bv_rewriter.cpp
View file

@ -157,7 +157,9 @@ br_status fpa2bv_rewriter_cfg::reduce_app(func_decl * f, unsigned num, expr * co
case OP_FPA_INTERNAL_BVUNWRAP:
case OP_FPA_INTERNAL_TO_REAL_UNSPECIFIED:
case OP_FPA_INTERNAL_TO_UBV_UNSPECIFIED:
case OP_FPA_INTERNAL_TO_SBV_UNSPECIFIED: return BR_FAILED;
case OP_FPA_INTERNAL_TO_SBV_UNSPECIFIED:
case OP_FPA_INTERNAL_TO_IEEE_BV_UNSPECIFIED:
return BR_FAILED;
default:
TRACE("fpa2bv", tout << "unsupported operator: " << f->get_name() << "\n";
for (unsigned i = 0; i < num; i++) tout << mk_ismt2_pp(args[i], m()) << std::endl;);

2
src/ast/fpa_decl_plugin.cpp
View file

@ -1060,7 +1060,7 @@ app * fpa_util::mk_internal_to_sbv_unspecified(unsigned width) {
app * fpa_util::mk_internal_to_ieee_bv_unspecified(unsigned width) {
parameter ps[] = { parameter(width) };
sort * range = m_bv_util.mk_sort(width);
return m().mk_app(get_family_id(), OP_FPA_INTERNAL_TO_SBV_UNSPECIFIED, 1, ps, 0, 0, range);
return m().mk_app(get_family_id(), OP_FPA_INTERNAL_TO_IEEE_BV_UNSPECIFIED, 1, ps, 0, 0, range);
}
app * fpa_util::mk_internal_to_real_unspecified() {

2
src/ast/rewriter/fpa_rewriter.cpp
View file

@ -107,6 +107,8 @@ br_status fpa_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * con
SASSERT(num_args == 0); st = mk_to_sbv_unspecified(f, result); break;
case OP_FPA_INTERNAL_TO_REAL_UNSPECIFIED:
SASSERT(num_args == 0); st = mk_to_real_unspecified(result); break;
case OP_FPA_INTERNAL_TO_IEEE_BV_UNSPECIFIED:
SASSERT(num_args == 0); st = mk_to_ieee_bv_unspecified(f, result); break;
case OP_FPA_INTERNAL_BVWRAP:
case OP_FPA_INTERNAL_BVUNWRAP: