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Fix for fp.rem. Pertains to #2381.

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Christoph M. Wintersteiger 2019-08-19 13:13:01 +01:00
parent f22d6e399d
commit 423fb73d34
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GPG key ID: BCF6360F86294467
1 changed files with 4 additions and 2 deletions
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6
src/ast/fpa/fpa2bv_converter.cpp
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@ -1164,7 +1164,8 @@ void fpa2bv_converter::mk_rem(sort * s, expr_ref & x, expr_ref & y, expr_ref & r
SASSERT(m_bv_util.get_bv_size(rndd_exp) == ebits+2);
SASSERT(m_bv_util.get_bv_size(y_exp_m1) == ebits);
expr_ref rndd_exp_eq_y_exp_m1(m), y_sig_le_rndd_sig(m);
expr_ref rndd_exp_eq_y_exp(m), rndd_exp_eq_y_exp_m1(m), y_sig_le_rndd_sig(m);
rndd_exp_eq_y_exp = m.mk_eq(rndd_sig_lz, m_bv_util.mk_numeral(1, ebits+2));
rndd_exp_eq_y_exp_m1 = m.mk_eq(rndd_sig_lz, m_bv_util.mk_numeral(2, ebits+2));
dbg_decouple("fpa2bv_rem_rndd_exp_eq_y_exp_m1", rndd_exp_eq_y_exp_m1);
@ -1177,7 +1178,8 @@ void fpa2bv_converter::mk_rem(sort * s, expr_ref & x, expr_ref & y, expr_ref & r
dbg_decouple("fpa2bv_rem_y_sig_eq_rndd_sig", y_sig_eq_rndd_sig);
expr_ref sub_cnd(m);
sub_cnd = m.mk_or(m.mk_and(rndd_exp_eq_y_exp_m1, y_sig_le_rndd_sig, m.mk_not(y_sig_eq_rndd_sig)),
sub_cnd = m.mk_or(m.mk_and(rndd_exp_eq_y_exp, y_sig_le_rndd_sig),
m.mk_and(rndd_exp_eq_y_exp_m1, y_sig_le_rndd_sig, m.mk_not(y_sig_eq_rndd_sig)),
m.mk_and(rndd_exp_eq_y_exp_m1, y_sig_eq_rndd_sig, m.mk_not(huge_div_is_even)));
dbg_decouple("fpa2bv_rem_sub_cnd", sub_cnd);