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Fixed corner-case in fp.to_ubv.

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This commit is contained in:
Christoph M. Wintersteiger 2018-04-16 18:28:13 +01:00
parent 098bce0f46
commit dab8e49e22
1 changed files with 3 additions and 1 deletions
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4
src/ast/fpa/fpa2bv_converter.cpp
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@ -3252,7 +3252,9 @@ void fpa2bv_converter::mk_to_bv(func_decl * f, unsigned num, expr * const * args
expr_ref ul(m), in_range(m);
if (!is_signed) {
ul = m_bv_util.mk_zero_extend(3, m_bv_util.mk_bv_neg(m_bv_util.mk_numeral(1, bv_sz)));
in_range = m.mk_and(m.mk_not(x_is_neg), m.mk_not(ovfl),
in_range = m.mk_and(m.mk_or(m.mk_not(x_is_neg),
m.mk_eq(pre_rounded, m_bv_util.mk_numeral(0, bv_sz+3))),
m.mk_not(ovfl),
m_bv_util.mk_ule(pre_rounded, ul));
}
else {