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Use nullptr.

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This commit is contained in:
Bruce Mitchener 2018-02-12 14:05:55 +07:00
parent f01328c65f
commit 76eb7b9ede
625 changed files with 4639 additions and 4639 deletions
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18
src/ast/rewriter/bv_rewriter.cpp
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@ -630,13 +630,13 @@ unsigned bv_rewriter::propagate_extract(unsigned high, expr * arg, expr_ref & re
const bool curr_is_conc = m_util.is_concat(curr);
if (curr_is_conc && to_app(curr)->get_num_args() == 0) continue;
expr * const curr_first = curr_is_conc ? to_app(curr)->get_arg(0) : curr;
expr * new_first = NULL;
expr * new_first = nullptr;
if (is_numeral(curr_first, val, curr_first_sz)) {
SASSERT(curr_first_sz >= removable);
const unsigned new_num_sz = curr_first_sz - removable;
new_first = new_num_sz ? mk_numeral(val, new_num_sz) : NULL;
new_first = new_num_sz ? mk_numeral(val, new_num_sz) : nullptr;
}
expr * new_arg = NULL;
expr * new_arg = nullptr;
if (curr_is_conc) {
const unsigned conc_num = to_app(curr)->get_num_args();
if (new_first) {
@ -650,7 +650,7 @@ unsigned bv_rewriter::propagate_extract(unsigned high, expr * arg, expr_ref & re
expr * const * const old_conc_args = to_app(curr)->get_args();
switch (conc_num) {
case 0: UNREACHABLE(); break;
case 1: new_arg = NULL; break;
case 1: new_arg = nullptr; break;
case 2: new_arg = to_app(curr)->get_arg(1); break;
default: new_arg = m_util.mk_concat(conc_num - 1, old_conc_args + 1);
}
@ -1458,10 +1458,10 @@ br_status bv_rewriter::mk_concat(unsigned num_args, expr * const * args, expr_re
bool fused_extract = false;
for (unsigned i = 0; i < num_args; i++) {
expr * arg = args[i];
expr * prev = 0;
expr * prev = nullptr;
if (i > 0)
prev = new_args.back();
if (is_numeral(arg, v1, sz1) && prev != 0 && is_numeral(prev, v2, sz2)) {
if (is_numeral(arg, v1, sz1) && prev != nullptr && is_numeral(prev, v2, sz2)) {
v2 *= rational::power_of_two(sz1);
v2 += v1;
new_args.pop_back();
@ -1476,7 +1476,7 @@ br_status bv_rewriter::mk_concat(unsigned num_args, expr * const * args, expr_re
expanded = true;
}
else if (m_util.is_extract(arg) &&
prev != 0 &&
prev != nullptr &&
m_util.is_extract(prev) &&
to_app(arg)->get_arg(0) == to_app(prev)->get_arg(0) &&
m_util.get_extract_low(prev) == m_util.get_extract_high(arg) + 1) {
@ -1814,7 +1814,7 @@ br_status bv_rewriter::mk_bv_xor(unsigned num, expr * const * args, expr_ref & r
//
if (!v1.is_zero() && num_coeffs == num - 1) {
// find argument that is not a numeral
expr * t = 0;
expr * t = nullptr;
for (unsigned i = 0; i < num; i++) {
t = args[i];
if (!is_numeral(t))
@ -1937,7 +1937,7 @@ br_status bv_rewriter::mk_bv_not(expr * arg, expr_ref & result) {
}
if (m_bvnot_simpl) {
expr *s(0), *t(0);
expr *s(nullptr), *t(nullptr);
if (m_util.is_bv_mul(arg, s, t)) {
// ~(-1 * x) --> (x - 1)
bv_size = m_util.get_bv_size(s);