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Bugfix for fp.roundToIntegral.

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Fixes #69
This commit is contained in:
Christoph M. Wintersteiger 2015-05-21 18:12:14 +01:00
parent c422b48bf4
commit 8c18bdcca9
2 changed files with 25 additions and 16 deletions
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13
src/ast/fpa/fpa2bv_converter.cpp
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@ -1586,9 +1586,10 @@ void fpa2bv_converter::mk_round_to_integral(func_decl * f, unsigned num, expr *
mk_nzero(f, nzero);
mk_pzero(f, pzero);
expr_ref x_is_zero(m), x_is_pos(m);
expr_ref x_is_zero(m), x_is_pos(m), x_is_neg(m);
mk_is_zero(x, x_is_zero);
mk_is_pos(x, x_is_pos);
mk_is_neg(x, x_is_neg);
dbg_decouple("fpa2bv_r2i_x_is_zero", x_is_zero);
dbg_decouple("fpa2bv_r2i_x_is_pos", x_is_pos);
@ -1655,9 +1656,13 @@ void fpa2bv_converter::mk_round_to_integral(func_decl * f, unsigned num, expr *
mk_ite(c422, xone, v42, v42);
mk_ite(c421, xzero, v42, v42);
mk_ite(m.mk_eq(a_sgn, one_1), nzero, pone, v4);
mk_ite(m.mk_or(rm_is_rte, rm_is_rta), v42, v4, v4);
mk_ite(m.mk_or(rm_is_rtz, rm_is_rtn), xzero, v4, v4);
expr_ref v4_rtn(m), v4_rtp(m);
mk_ite(x_is_neg, nzero, pone, v4_rtp);
mk_ite(x_is_neg, none, pzero, v4_rtn);
mk_ite(rm_is_rtp, v4_rtp, v42, v4);
mk_ite(rm_is_rtn, v4_rtn, v4, v4);
mk_ite(rm_is_rtz, xzero, v4, v4);
SASSERT(is_well_sorted(m, v4));