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Cleaned up mpf rounder. Rewrote mpf fma. Relates to #872.

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This commit is contained in:
Christoph M. Wintersteiger 2017-07-27 23:08:35 +01:00
parent 75b533f050
commit 33ebdc8adc
3 changed files with 184 additions and 171 deletions
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4
src/ast/fpa/fpa2bv_converter.cpp
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@ -3904,9 +3904,6 @@ void fpa2bv_converter::round(sort * s, expr_ref & rm, expr_ref & sgn, expr_ref &
SASSERT(m_bv_util.get_bv_size(sig) == sbits+4);
SASSERT(m_bv_util.get_bv_size(exp) == ebits+2);
// bool UNFen = false;
// bool OVFen = false;
expr_ref e_min(m), e_max(m);
mk_min_exp(ebits, e_min);
mk_max_exp(ebits, e_max);
@ -4025,7 +4022,6 @@ void fpa2bv_converter::round(sort * s, expr_ref & rm, expr_ref & sgn, expr_ref &
SASSERT(is_well_sorted(m, sig));
SASSERT(m_bv_util.get_bv_size(sig) == sbits+2);
// CMW: The (OVF1 && OVFen) and (TINY && UNFen) cases are never taken.
expr_ref ext_emin(m);
ext_emin = m_bv_util.mk_zero_extend(2, e_min);
m_simp.mk_ite(TINY, ext_emin, beta, exp);