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more scaffolding

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This commit is contained in:
Nikolaj Bjorner 2021-03-21 11:31:14 -07:00
parent a1f484fa35
commit 2fef6dc502
16 changed files with 476 additions and 152 deletions
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22
src/ast/bv_decl_plugin.cpp
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@ -841,28 +841,6 @@ bool bv_recognizers::is_bit2bool(expr* e, expr*& bv, unsigned& idx) const {
return true;
}
bool bv_recognizers::mult_inverse(rational const & n, unsigned bv_size, rational & result) {
if (n.is_one()) {
result = n;
return true;
}
if (!mod(n, rational(2)).is_one()) {
return false;
}
rational g;
rational x;
rational y;
g = gcd(n, rational::power_of_two(bv_size), x, y);
if (x.is_neg()) {
x = mod(x, rational::power_of_two(bv_size));
}
SASSERT(x.is_pos());
SASSERT(mod(x * n, rational::power_of_two(bv_size)).is_one());
result = x;
return true;
}
bv_util::bv_util(ast_manager & m):
bv_recognizers(m.mk_family_id(symbol("bv"))),