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FPA: bugfixes, naming convention, core theory additions

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Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
This commit is contained in:
Christoph M. Wintersteiger 2014-12-16 23:59:27 +00:00
parent f11ee40c38
commit 47325c5fd3
10 changed files with 287 additions and 114 deletions
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16
src/ast/rewriter/float_rewriter.cpp
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@ -205,14 +205,14 @@ br_status float_rewriter::mk_neg(expr * arg1, expr_ref & result) {
result = arg1;
return BR_DONE;
}
if (m_util.is_plus_inf(arg1)) {
if (m_util.is_pinf(arg1)) {
// - +oo --> -oo
result = m_util.mk_minus_inf(m().get_sort(arg1));
result = m_util.mk_ninf(m().get_sort(arg1));
return BR_DONE;
}
if (m_util.is_minus_inf(arg1)) {
if (m_util.is_ninf(arg1)) {
// - -oo -> +oo
result = m_util.mk_plus_inf(m().get_sort(arg1));
result = m_util.mk_pinf(m().get_sort(arg1));
return BR_DONE;
}
if (m_util.is_neg(arg1)) {
@ -366,22 +366,22 @@ br_status float_rewriter::mk_lt(expr * arg1, expr * arg2, expr_ref & result) {
result = m().mk_false();
return BR_DONE;
}
if (m_util.is_minus_inf(arg1)) {
if (m_util.is_ninf(arg1)) {
// -oo < arg2 --> not(arg2 = -oo) and not(arg2 = NaN)
result = m().mk_and(m().mk_not(m().mk_eq(arg2, arg1)), mk_neq_nan(arg2));
return BR_REWRITE3;
}
if (m_util.is_minus_inf(arg2)) {
if (m_util.is_ninf(arg2)) {
// arg1 < -oo --> false
result = m().mk_false();
return BR_DONE;
}
if (m_util.is_plus_inf(arg1)) {
if (m_util.is_pinf(arg1)) {
// +oo < arg2 --> false
result = m().mk_false();
return BR_DONE;
}
if (m_util.is_plus_inf(arg2)) {
if (m_util.is_pinf(arg2)) {
// arg1 < +oo --> not(arg1 = +oo) and not(arg1 = NaN)
result = m().mk_and(m().mk_not(m().mk_eq(arg1, arg2)), mk_neq_nan(arg1));
return BR_REWRITE3;