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int<->real coercions.

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2012-10-12 16:34:54 -07:00
parent c48bd1e8de
commit 75457e1393
9 changed files with 184 additions and 21 deletions
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40
lib/arith_decl_plugin.cpp
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@ -332,8 +332,8 @@ inline func_decl * arith_decl_plugin::mk_func_decl(decl_kind k, bool is_real) {
case OP_SUB: return is_real ? m_r_sub_decl : m_i_sub_decl;
case OP_UMINUS: return is_real ? m_r_uminus_decl : m_i_uminus_decl;
case OP_MUL: return is_real ? m_r_mul_decl : m_i_mul_decl;
case OP_DIV: SASSERT(is_real); return m_r_div_decl;
case OP_IDIV: SASSERT(!is_real); return m_i_div_decl;
case OP_DIV: return m_r_div_decl;
case OP_IDIV: return m_i_div_decl;
case OP_REM: return m_i_rem_decl;
case OP_MOD: return m_i_mod_decl;
case OP_TO_REAL: return m_to_real_decl;
@ -415,6 +415,24 @@ func_decl * arith_decl_plugin::mk_num_decl(unsigned num_parameters, parameter co
else
return m_manager->mk_const_decl(m_realv_sym, m_real_decl, func_decl_info(m_family_id, OP_NUM, num_parameters, parameters));
}
static bool use_coercion(decl_kind k) {
return k == OP_ADD || k == OP_SUB || k == OP_MUL || k == OP_POWER || k == OP_LE || k == OP_GE || k == OP_LT || k == OP_GT || k == OP_UMINUS;
}
static bool has_real_arg(unsigned arity, sort * const * domain, sort * real_sort) {
for (unsigned i = 0; i < arity; i++)
if (domain[i] == real_sort)
return true;
return false;
}
static bool has_real_arg(ast_manager * m, unsigned num_args, expr * const * args, sort * real_sort) {
for (unsigned i = 0; i < num_args; i++)
if (m->get_sort(args[i]) == real_sort)
return true;
return false;
}
func_decl * arith_decl_plugin::mk_func_decl(decl_kind k, unsigned num_parameters, parameter const * parameters,
unsigned arity, sort * const * domain, sort * range) {
@ -424,8 +442,13 @@ func_decl * arith_decl_plugin::mk_func_decl(decl_kind k, unsigned num_parameters
m_manager->raise_exception("no arguments supplied to arithmetical operator");
return 0;
}
bool is_real = arity > 0 && domain[0] == m_real_decl;
return mk_func_decl(fix_kind(k, arity), is_real);
if (m_manager->int_real_coercions() && use_coercion(k)) {
return mk_func_decl(fix_kind(k, arity), has_real_arg(arity, domain, m_real_decl));
}
else {
bool is_real = arity > 0 && domain[0] == m_real_decl;
return mk_func_decl(fix_kind(k, arity), is_real);
}
}
func_decl * arith_decl_plugin::mk_func_decl(decl_kind k, unsigned num_parameters, parameter const * parameters,
@ -436,8 +459,13 @@ func_decl * arith_decl_plugin::mk_func_decl(decl_kind k, unsigned num_parameters
m_manager->raise_exception("no arguments supplied to arithmetical operator");
return 0;
}
bool is_real = num_args > 0 && m_manager->get_sort(args[0]) == m_real_decl;
return mk_func_decl(fix_kind(k, num_args), is_real);
if (m_manager->int_real_coercions() && use_coercion(k)) {
return mk_func_decl(fix_kind(k, num_args), has_real_arg(m_manager, num_args, args, m_real_decl));
}
else {
bool is_real = num_args > 0 && m_manager->get_sort(args[0]) == m_real_decl;
return mk_func_decl(fix_kind(k, num_args), is_real);
}
}
void arith_decl_plugin::get_sort_names(svector<builtin_name>& sort_names, symbol const & logic) {