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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
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@ -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) {