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MPF conversion bugfix.

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Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
This commit is contained in:
Christoph M. Wintersteiger 2013-06-14 17:22:25 +01:00
parent 1a26c9726b
commit 76c59cb85c
2 changed files with 9 additions and 5 deletions
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12
src/ast/rewriter/float_rewriter.cpp
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@ -83,17 +83,21 @@ br_status float_rewriter::mk_to_float(func_decl * f, unsigned num_args, expr * c
rational q;
mpf q_mpf;
if (m_util.au().is_numeral(args[1], q)) {
TRACE("fp_rewriter", tout << "q: " << q << std::endl; );
mpf v;
m_util.fm().set(v, ebits, sbits, rm, q.to_mpq());
result = m_util.mk_value(v);
m_util.fm().del(v);
m_util.fm().del(v);
TRACE("fp_rewriter", tout << "result: " << result << std::endl; );
return BR_DONE;
}
else if (m_util.is_value(args[1], q_mpf)) {
else if (m_util.is_value(args[1], q_mpf)) {
TRACE("fp_rewriter", tout << "q: " << m_util.fm().to_string(q_mpf) << std::endl; );
mpf v;
m_util.fm().set(v, ebits, sbits, rm, q_mpf);
result = m_util.mk_value(v);
m_util.fm().del(v);
TRACE("fp_rewriter", tout << "result: " << result << std::endl; );
return BR_DONE;
}
else
@ -117,11 +121,11 @@ br_status float_rewriter::mk_to_float(func_decl * f, unsigned num_args, expr * c
return BR_FAILED;
TRACE("fp_rewriter", tout << "q: " << q << ", e: " << e << "\n";);
mpf v;
m_util.fm().set(v, ebits, sbits, rm, q.to_mpq(), e.to_mpq().numerator());
result = m_util.mk_value(v);
m_util.fm().del(v);
m_util.fm().del(v);
TRACE("fp_rewriter", tout << "result: " << result << std::endl; );
return BR_DONE;
}
else {

2
src/util/mpf.cpp
View file

@ -367,7 +367,7 @@ void mpf_manager::set(mpf & o, unsigned ebits, unsigned sbits, mpf_rounding_mode
o.ebits = ebits;
o.sbits = sbits;
signed ds = sbits - x.sbits + 4; // plus rounding bits
signed ds = sbits - x.sbits + 3; // plus rounding bits
if (ds > 0)
{
m_mpz_manager.mul2k(o.significand, ds);