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This commit is contained in:
Nikolaj Bjorner 2024-02-16 14:37:49 +07:00
parent ddf2d28350
commit 388b2f5eec
9 changed files with 274 additions and 202 deletions
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21
src/ast/sls/sls_valuation.h
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@ -28,11 +28,10 @@ Author:
namespace bv {
struct sls_valuation {
unsigned bw; // bit-width
unsigned nw; // num words
svector<digit_t> lo, hi; // range assignment to bit-vector, as wrap-around interval
unsigned bw; // bit-width
unsigned nw; // num words
svector<digit_t> lo, hi; // range assignment to bit-vector, as wrap-around interval
svector<digit_t> bits, fixed; // bit assignment and don't care bit
bool is_feasible() const; // the current bit-evaluation is between lo and hi.
sls_valuation(unsigned bw);
~sls_valuation();
@ -44,17 +43,15 @@ namespace bv {
void add_range(rational lo, rational hi);
void set1(svector<digit_t>& bits);
void clear_overflow_bits(svector<digit_t>& bits) const;
bool in_range(svector<digit_t> const& bits) const;
bool can_set(svector<digit_t> const& bits) const;
bool eq(sls_valuation const& other) const { return eq(other.bits); }
bool eq(svector<digit_t> const& other) const;
bool gt(svector<digit_t> const& a, svector<digit_t> const& b) const {
return 0 > memcmp(a.data(), b.data(), num_bytes());
}
bool eq(svector<digit_t> const& other) const { return eq(other, bits); }
bool eq(svector<digit_t> const& a, svector<digit_t> const& b) const;
bool gt(svector<digit_t> const& a, svector<digit_t> const& b) const;
bool is_zero() const { return is_zero(bits); }
bool is_zero(svector<digit_t> const& a) const {
@ -79,6 +76,10 @@ namespace bv {
return i;
}
// retrieve number at or below src which is feasible
// with respect to fixed, lo, hi.
bool get_below(svector<digit_t> const& src, svector<digit_t>& dst);
bool try_set(svector<digit_t> const& src) {
if (!can_set(src))
return false;