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various bugfixes and extensions for FPA

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Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
This commit is contained in:
Christoph M. Wintersteiger 2015-01-15 19:25:49 +00:00
parent caafee0033
commit 5344d6f3c0
10 changed files with 396 additions and 341 deletions
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10
src/ast/rewriter/fpa_rewriter.cpp
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@ -131,7 +131,7 @@ br_status fpa_rewriter::mk_to_fp(func_decl * f, unsigned num_args, expr * const
scoped_mpf v(m_util.fm());
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);
return BR_DONE;
}
else if (bu.is_numeral(args[0], r1, bvs1) &&
@ -268,10 +268,8 @@ br_status fpa_rewriter::mk_abs(expr * arg1, expr_ref & result) {
result = arg1;
return BR_DONE;
}
result = m().mk_ite(m_util.mk_is_sign_minus(arg1),
m_util.mk_neg(arg1),
arg1);
return BR_REWRITE2;
return BR_FAILED;
}
br_status fpa_rewriter::mk_min(expr * arg1, expr * arg2, expr_ref & result) {
@ -565,7 +563,7 @@ br_status fpa_rewriter::mk_fp(expr * arg1, expr * arg2, expr * arg3, expr_ref &
r1.is_one(),
r3.to_mpq().numerator(),
m_util.fm().unbias_exp(bvs2, biased_exp));
TRACE("fp_rewriter", tout << "v = " << m_util.fm().to_string(v) << std::endl;);
TRACE("fp_rewriter", tout << "simplified (fp ...) to " << m_util.fm().to_string(v) << std::endl;);
result = m_util.mk_value(v);
return BR_DONE;
}