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Bugfix for fp.isNegative.

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Fixes #13
This commit is contained in:
Christoph M. Wintersteiger 2015-03-29 13:57:11 +01:00
parent 690eb8eaca
commit 0ed16c09f9
1 changed files with 4 additions and 1 deletions
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5
src/ast/fpa/fpa2bv_converter.cpp
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@ -1837,7 +1837,10 @@ void fpa2bv_converter::mk_is_subnormal(func_decl * f, unsigned num, expr * const
void fpa2bv_converter::mk_is_negative(func_decl * f, unsigned num, expr * const * args, expr_ref & result) {
SASSERT(num == 1);
mk_is_neg(args[0], result);
expr_ref t1(m), t2(m);
mk_is_nan(args[0], t1);
mk_is_neg(args[0], t2);
result = m.mk_and(m.mk_not(t1), t2);
TRACE("fpa2bv_is_negative", tout << "result = " << mk_ismt2_pp(result, m) << std::endl;);
}