40 std::vector<mp_integer> bytes;
43 for(std::size_t bit = 0; bit < width; bit += bits_per_byte)
44 bytes.push_back((value >> bit)%
power(2, bits_per_byte));
48 for(std::size_t bit = 0; bit < width; bit += bits_per_byte)
52 "bytes is not empty because we just pushed just as many elements on "
53 "top of it as we are popping now");
54 new_value+=bytes.back()<<bit;
76 type_id == ID_integer || type_id == ID_natural ||
77 type_id == ID_unsignedbv || type_id == ID_signedbv)
86 else if(type_id==ID_rational)
95 else if(type_id==ID_fixedbv)
102 else if(type_id==ID_floatbv)
125 type_id == ID_integer || type_id == ID_natural ||
126 type_id == ID_unsignedbv || type_id == ID_signedbv)
135 else if(type_id==ID_rational)
144 else if(type_id==ID_fixedbv)
151 else if(type_id==ID_floatbv)
164#pragma GCC diagnostic push
166# pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
178 bool no_change =
true;
181 exprt::operandst::iterator constant;
184 bool constant_found =
false;
189 for(exprt::operandst::iterator it = new_operands.begin();
190 it != new_operands.end();)
199 it->type().id()!=ID_floatbv)
205 bool do_erase =
false;
208 if(it->is_constant() && it->type()==expr.
type())
211 if(!c_sizeof_type.has_value())
213 const typet &sizeof_type =
214 static_cast<const typet &
>(it->find(ID_C_c_sizeof_type));
216 c_sizeof_type = sizeof_type;
229 constant_found =
true;
236 it = new_operands.erase(it);
243 if(c_sizeof_type.has_value())
247 "c_sizeof_type is only set to a non-nil value "
248 "if a constant has been found");
249 constant->set(ID_C_c_sizeof_type, *c_sizeof_type);
252 if(new_operands.size() == 1)
254 return new_operands.front();
259 if(constant_found && constant->is_one())
262 new_operands.erase(constant);
265 if(new_operands.size() == 1)
266 return new_operands.front();
275 tmp.
operands() = std::move(new_operands);
276 return std::move(tmp);
279#pragma GCC diagnostic pop
288 if(expr_type!=expr.
op0().
type() ||
294 if(expr_type.
id()==ID_signedbv ||
295 expr_type.
id()==ID_unsignedbv ||
296 expr_type.
id()==ID_natural ||
297 expr_type.
id()==ID_integer)
303 if(int_value1.has_value() && *int_value1 == 0)
307 if(int_value1.has_value() && *int_value1 == 1)
313 if(int_value0.has_value() && *int_value0 == 0)
318 if(int_value0.has_value() && int_value1.has_value())
320 mp_integer result = *int_value0 / *int_value1;
324 else if(expr_type.
id()==ID_rational)
332 if(ok1 && rat_value1.
is_zero())
335 if((ok1 && rat_value1.
is_one()) ||
347 return std::move(tmp);
350 else if(expr_type.
id()==ID_fixedbv)
380 if(expr.
type().
id()==ID_signedbv ||
381 expr.
type().
id()==ID_unsignedbv ||
382 expr.
type().
id()==ID_natural ||
383 expr.
type().
id()==ID_integer)
391 if(int_value1.has_value() && *int_value1 == 0)
395 (int_value1.has_value() && *int_value1 == 1) ||
396 (int_value0.has_value() && *int_value0 == 0))
401 if(int_value0.has_value() && int_value1.has_value())
403 mp_integer result = *int_value0 % *int_value1;
417 bool no_change =
true;
424 if(expr.
type().
id() == ID_floatbv)
429 const exprt::operandst::iterator next = std::next(it);
431 if(next != new_operands.end())
433 if(it->type()==next->type() &&
438 new_operands.erase(next);
449 expr.
op0().
id() == ID_plus && expr.
op0().
type().
id() == ID_pointer &&
453 if(
as_const(result).op0().type().
id() != ID_pointer)
457 if(op1.
id() == ID_plus)
476 for(
const auto &op : expr.
operands())
478 if(
is_number(op.type()) && op.is_constant())
485 exprt::operandst::iterator const_sum;
486 bool const_sum_set=
false;
488 for(
auto it = new_operands.begin(); it != new_operands.end(); it++)
490 if(
is_number(it->type()) && it->is_constant())
512 typedef std::unordered_map<exprt, exprt::operandst::iterator, irep_hash>
516 for(
auto it = new_operands.begin(); it != new_operands.end(); it++)
517 if(it->id() == ID_unary_minus)
523 for(
auto it = new_operands.begin(); it != new_operands.end(); it++)
527 else if(it->id()==ID_unary_minus)
530 expr_mapt::iterator itm=expr_map.find(*it);
532 if(itm!=expr_map.end())
544 for(exprt::operandst::iterator it = new_operands.begin();
545 it != new_operands.end();
548 if(
is_number(it->type()) && it->is_zero())
550 it = new_operands.erase(it);
558 if(new_operands.empty())
562 else if(new_operands.size() == 1)
564 return new_operands.front();
572 tmp.
operands() = std::move(new_operands);
573 return std::move(tmp);
581 if(!
is_number(minus_expr.type()) && minus_expr.type().id() != ID_pointer)
596 minus_expr.type().id() == ID_pointer &&
597 operands[0].type().id() == ID_pointer &&
is_number(operands[1].type()))
607 is_number(minus_expr.type()) && operands[0].type().id() == ID_pointer &&
608 operands[1].type().id() == ID_pointer)
614 if(ptr_op0 == ptr_op1 && address_of)
627 offset_op0.
is_constant() && offset_op1.is_constant() &&
628 object_size.has_value() && element_size.has_value() &&
629 element_size->
is_constant() && !element_size->is_zero() &&
656 element_size.has_value() && element_size->is_constant() &&
657 !element_size->is_zero())
680 for(
const auto &op : expr.
operands())
685 else if(op.is_zero() || op.is_one())
697 if(expr.
id()==ID_bitand)
699 else if(expr.
id()==ID_bitor)
701 else if(expr.
id()==ID_bitxor)
708 if(it->id()==ID_typecast)
710 else if(it->is_zero())
712 else if(it->is_one())
723 bool no_change =
true;
724 auto new_expr = expr;
730 while(new_expr.operands().size() >= 2)
732 if(!new_expr.op0().is_constant())
735 if(!new_expr.op1().is_constant())
738 if(new_expr.op0().type() != new_expr.type())
741 if(new_expr.op1().type() != new_expr.type())
747 std::function<bool(
bool,
bool)> f;
749 if(new_expr.id() == ID_bitand)
750 f = [](
bool a,
bool b) {
return a && b; };
751 else if(new_expr.id() == ID_bitor)
752 f = [](
bool a,
bool b) {
return a || b; };
753 else if(new_expr.id() == ID_bitxor)
754 f = [](
bool a,
bool b) {
return a != b; };
759 make_bvrep(width, [&a_val, &b_val, &width, &f](std::size_t i) {
767 new_expr.operands().erase(new_expr.operands().begin());
768 new_expr.op0().swap(new_op);
775 if(new_expr.id() == ID_bitor || new_expr.id() == ID_bitxor)
777 for(exprt::operandst::iterator it = new_expr.operands().begin();
778 it != new_expr.operands().end();)
780 if(it->is_zero() && new_expr.operands().size() > 1)
782 it = new_expr.operands().erase(it);
786 it->is_constant() && it->type().id() == ID_bv &&
788 new_expr.operands().size() > 1)
790 it = new_expr.operands().erase(it);
800 if(new_expr.id() == ID_bitand)
802 const auto all_ones =
power(2, width) - 1;
803 for(exprt::operandst::iterator it = new_expr.operands().begin();
804 it != new_expr.operands().end();)
810 new_expr.operands().size() > 1)
812 it = new_expr.operands().erase(it);
822 if(new_expr.operands().size() == 2 && new_expr.op0() == new_expr.op1())
824 if(new_expr.id() == ID_bitand || new_expr.id() == ID_bitor)
826 return new_expr.op0();
828 else if(new_expr.id() == ID_bitxor)
834 if(new_expr.operands().size() == 1)
835 return new_expr.op0();
840 return std::move(new_expr);
855 !index_converted_to_int.has_value() || *index_converted_to_int < 0 ||
856 *index_converted_to_int >= src_bit_width)
875 bool no_change =
true;
887 const bool value = op.
is_true();
896 while(i < new_expr.
operands().size() - 1)
911 const auto new_width = width_i + width_n;
914 new_width, [&value_i, &value_n, width_i, width_n](std::size_t x) {
963 else if(new_expr.
type().
id() == ID_verilog_unsignedbv)
968 while(i < new_expr.
operands().size() - 1)
975 (opi.
type().
id()==ID_verilog_unsignedbv ||
977 (opn.
type().
id()==ID_verilog_unsignedbv ||
981 const std::string new_value=
983 opi.
set(ID_value, new_value);
985 opi.
type().
id(ID_verilog_unsignedbv);
999 return new_expr.
op0();
1005 return std::move(new_expr);
1016 if(!distance.has_value())
1025 !value.has_value() && expr.
op().
type().
id() == ID_bv &&
1033 if(!value.has_value())
1037 expr.
op().
type().
id() == ID_unsignedbv ||
1042 if(expr.
id()==ID_lshr)
1045 if(*distance >= width)
1049 else if(*distance >= 0)
1052 *value +=
power(2, width);
1053 *value /=
power(2, *distance);
1057 else if(expr.
id()==ID_ashr)
1066 else if(expr.
id()==ID_shl)
1069 if(*distance >= width)
1073 else if(*distance >= 0)
1075 *value *=
power(2, *distance);
1081 expr.
op().
type().
id() == ID_integer || expr.
op().
type().
id() == ID_natural)
1083 if(expr.
id()==ID_lshr)
1087 *value /=
power(2, *distance);
1091 else if(expr.
id()==ID_ashr)
1097 if(*value < 0 && new_value == 0)
1103 else if(expr.
id()==ID_shl)
1107 *value *=
power(2, *distance);
1125 if(!base.has_value())
1128 if(!exponent.has_value())
1151 if(!start.has_value())
1154 if(!end.has_value())
1159 if(!width.has_value())
1162 if(*start < 0 || *start >= (*width) || *end < 0 || *end >= (*width))
1165 DATA_INVARIANT(*start >= *end,
"extractbits must have upper() >= lower()");
1171 if(!svalue.has_value() || svalue->size() != *width)
1174 std::string extracted_value = svalue->substr(
1179 if(!result.has_value())
1182 return std::move(*result);
1184 else if(expr.
src().
id() == ID_concatenation)
1194 if(!op_width.has_value() || *op_width <= 0)
1197 if(*start < offset && offset <= *end + *op_width)
1208 offset -= *op_width;
1213 if(eb_src->upper().is_constant() && eb_src->lower().is_constant())
1224 else if(*end == 0 && *start + 1 == *width)
1246 const exprt &operand = expr.
op();
1251 if(operand.
id()==ID_unary_minus)
1264 if(type_id==ID_integer ||
1265 type_id==ID_signedbv ||
1266 type_id==ID_unsignedbv)
1270 if(!int_value.has_value())
1275 else if(type_id==ID_rational)
1283 else if(type_id==ID_fixedbv)
1289 else if(type_id==ID_floatbv)
1305 const auto &type = expr.
type();
1308 type.id() == ID_bv || type.id() == ID_unsignedbv ||
1309 type.id() == ID_signedbv)
1313 if(op.
type() == type)
1318 const auto new_value =
1319 make_bvrep(width, [&value, &width](std::size_t i) {
1345 if((expr.
id()==ID_equal || expr.
id()==ID_notequal) &&
1349 auto new_expr = expr;
1350 new_expr.
op0().
swap(new_expr.op1());
1354 if(tmp0.
id()==ID_if && tmp0.
operands().size()==3)
1368 (expr.
id() == ID_equal || expr.
id() == ID_notequal))
1373 if(tmp0.
id()==ID_pointer_object &&
1374 tmp1.
id()==ID_pointer_object &&
1375 (expr.
id()==ID_equal || expr.
id()==ID_notequal))
1380 if(tmp0.
type().
id()==ID_c_enum_tag)
1383 if(tmp1.
type().
id()==ID_c_enum_tag)
1390 if(tmp0_const && tmp1_const)
1400 if(expr.
id()==ID_ge)
1402 else if(expr.
id()==ID_le)
1404 else if(expr.
id()==ID_gt)
1406 else if(expr.
id()==ID_lt)
1434 if(tmp0.
type().
id() == ID_c_enum_tag)
1437 if(tmp1.
type().
id() == ID_c_enum_tag)
1443 if(expr.
id() == ID_equal || expr.
id() == ID_notequal)
1447 bool equal = (tmp0_const.get_value() == tmp1_const.get_value());
1449 !equal && tmp0_const.type().id() == ID_pointer &&
1450 tmp1_const.type().id() == ID_pointer)
1454 tmp1_const.get_value() == ID_NULL))
1460 equal = tmp0_const.is_zero() && tmp1_const.is_zero();
1465 if(tmp0.
type().
id() == ID_fixedbv)
1470 if(expr.
id() == ID_ge)
1472 else if(expr.
id() == ID_le)
1474 else if(expr.
id() == ID_gt)
1476 else if(expr.
id() == ID_lt)
1481 else if(tmp0.
type().
id() == ID_floatbv)
1486 if(expr.
id() == ID_ge)
1488 else if(expr.
id() == ID_le)
1490 else if(expr.
id() == ID_gt)
1492 else if(expr.
id() == ID_lt)
1497 else if(tmp0.
type().
id() == ID_rational)
1507 if(expr.
id() == ID_ge)
1509 else if(expr.
id() == ID_le)
1511 else if(expr.
id() == ID_gt)
1513 else if(expr.
id() == ID_lt)
1530 if(expr.
id() == ID_ge)
1532 else if(expr.
id() == ID_le)
1534 else if(expr.
id() == ID_gt)
1536 else if(expr.
id() == ID_lt)
1554 if(op0.
id()==ID_plus)
1556 bool no_change =
true;
1564 else if(op1.
id()==ID_plus)
1566 bool no_change =
true;
1577 op0.
type().
id()!=ID_complex)
1595 if(expr.
op0().
type().
id() == ID_floatbv)
1598 if(expr.
op0().
type().
id() == ID_pointer)
1603 if(ptr_op0 == ptr_op1)
1609 std::move(offset_op0), expr.
id(), std::move(offset_op1)}));
1612 else if(expr.
id() != ID_equal && expr.
id() != ID_notequal)
1617 expr.
id() == ID_equal && ptr_op0.
id() == ID_address_of &&
1618 ptr_op1.
id() == ID_address_of)
1623 auto in_bounds = [
this](
const exprt &object_ptr,
const exprt &expr_op) {
1630 exprt in_object_bounds =
1632 std::move(offset), ID_lt, std::move(*
object_size)})
1642 in_bounds(ptr_op0, expr.
op0()).is_true() &&
1643 in_bounds(ptr_op1, expr.
op1()).is_true())
1651 if(expr.
id()==ID_notequal)
1653 auto new_rel_expr = expr;
1654 new_rel_expr.
id(ID_equal);
1658 else if(expr.
id()==ID_gt)
1660 auto new_rel_expr = expr;
1661 new_rel_expr.
id(ID_ge);
1663 new_rel_expr.lhs().
swap(new_rel_expr.rhs());
1667 else if(expr.
id()==ID_lt)
1669 auto new_rel_expr = expr;
1670 new_rel_expr.
id(ID_ge);
1674 else if(expr.
id()==ID_le)
1676 auto new_rel_expr = expr;
1677 new_rel_expr.
id(ID_ge);
1679 new_rel_expr.lhs().
swap(new_rel_expr.rhs());
1686 expr.
id() == ID_ge || expr.
id() == ID_equal,
1687 "we previously converted all other cases to >= or ==");
1691 if(expr.
op0() == expr.
op1())
1696 if(expr.
id()==ID_equal)
1732 if(expr.
id()==ID_notequal)
1734 auto new_rel_expr = expr;
1735 new_rel_expr.
id(ID_equal);
1741 if(expr.
id() != ID_equal)
1750 if(expr.
op0().
id() == ID_address_of)
1755 object.
id() == ID_symbol ||
object.
id() == ID_dynamic_object ||
1756 object.
id() == ID_member ||
object.
id() == ID_index ||
1757 object.
id() == ID_string_constant)
1763 expr.
op0().
id() == ID_typecast &&
1767 const auto &
object =
1771 object.
id() == ID_symbol ||
object.
id() == ID_dynamic_object ||
1772 object.
id() == ID_member ||
object.
id() == ID_index ||
1773 object.
id() == ID_string_constant)
1779 expr.
op0().
id() == ID_typecast && expr.
op0().
type().
id() == ID_pointer)
1783 op.
type().
id() != ID_pointer &&
1785 op.
type().
id() == ID_complex))
1792 auto new_expr = expr;
1794 if(new_expr.op0().type().id() != ID_pointer)
1795 new_expr.op1() =
from_integer(0, new_expr.op0().type());
1797 new_expr.op1().type() = new_expr.op0().type();
1800 else if(expr.
op0().
id() == ID_plus)
1832 if(expr.
op0().
id()==ID_plus)
1836 if(expr.
id()==ID_equal || expr.
id()==ID_notequal)
1839 bool op_changed =
false;
1840 auto new_expr = expr;
1844 if(it->is_constant())
1862 new_expr.op1() =
from_integer(i, new_expr.op1().type());
1875 expr.
op0().
id() == ID_typecast && expr.
op0().
type().
id() == ID_floatbv &&
1882 ieee_floatt const_val_converted_back=const_val_converted;
1885 if(const_val_converted_back==const_val)
1890 return std::move(result);
1899 if(expr.
id()==ID_ge &&
1906 auto new_expr = expr;
1909 if(expr.
id()==ID_equal)
1912 if(operand.
id()==ID_unary_minus)
1915 return std::move(new_expr);
1917 else if(operand.
id()==ID_plus)
1922 if(operand_plus_expr.operands().size() == 2)
1925 if(operand_plus_expr.op0().id() == ID_unary_minus)
1926 operand_plus_expr.op0().swap(operand_plus_expr.op1());
1928 if(operand_plus_expr.op1().id() == ID_unary_minus)
1931 operand_plus_expr.op0(),
1943 if(maybe_tc_op.
type().
id() == ID_pointer)
1947 bool bitwidth_unchanged =
true;
1949 while(bitwidth_unchanged && ep->
id() == ID_typecast)
1953 bitwidth_unchanged = t->get_width() == p_type.
get_width();
1956 bitwidth_unchanged =
false;
1961 if(bitwidth_unchanged)
1963 if(expr.
id() == ID_equal || expr.
id() == ID_ge || expr.
id() == ID_le)
1980 expr.
op0().
id() == ID_typecast &&
1994 return lhs_typecast_op;
1998 #define NORMALISE_CONSTANT_TESTS
1999 #ifdef NORMALISE_CONSTANT_TESTS
2001 if(expr.
op0().
type().
id()==ID_unsignedbv ||
2006 if(expr.
id()==ID_notequal)
2008 auto new_rel_expr = expr;
2009 new_rel_expr.
id(ID_equal);
2013 else if(expr.
id()==ID_gt)
2022 auto new_expr = expr;
2025 new_expr.op1() =
from_integer(i, new_expr.op1().type());
2028 else if(expr.
id()==ID_lt)
2030 auto new_rel_expr = expr;
2031 new_rel_expr.
id(ID_ge);
2035 else if(expr.
id()==ID_le)
2044 auto new_rel_expr = expr;
2045 new_rel_expr.
id(ID_ge);
2047 new_rel_expr.op1() =
from_integer(i, new_rel_expr.op1().type());
2064 if(!const_bits_opt.has_value())
2067 std::reverse(const_bits_opt->begin(), const_bits_opt->end());
2074 if(!result.has_value())
2077 return std::move(*result);
std::unordered_map< exprt, exprt, irep_hash > expr_mapt
const T & as_const(T &value)
Return a reference to the same object but ensures the type is const.
API to expression classes for bitvectors.
const extractbits_exprt & to_extractbits_expr(const exprt &expr)
Cast an exprt to an extractbits_exprt.
const bitvector_typet & to_bitvector_type(const typet &type)
Cast a typet to a bitvector_typet.
const integer_bitvector_typet & to_integer_bitvector_type(const typet &type)
Cast a typet to an integer_bitvector_typet.
const floatbv_typet & to_floatbv_type(const typet &type)
Cast a typet to a floatbv_typet.
unsignedbv_typet size_type()
const c_enum_tag_typet & to_c_enum_tag_type(const typet &type)
Cast a typet to a c_enum_tag_typet.
A base class for binary expressions.
A base class for relations, i.e., binary predicates whose two operands have the same type.
Bit-wise negation of bit-vectors.
Reverse the order of bits in a bit-vector.
Base class of fixed-width bit-vector types.
void set_width(std::size_t width)
std::size_t get_width() const
The byte swap expression.
std::size_t get_bits_per_byte() const
Concatenation of bit-vector operands.
struct configt::ansi_ct ansi_c
A constant literal expression.
const irep_idt & get_value() const
bool value_is_zero_string() const
void set_value(const irep_idt &value)
dstringt has one field, an unsigned integer no which is an index into a static table of strings.
Base class for all expressions.
std::vector< exprt > operandst
bool is_one() const
Return whether the expression is a constant representing 1.
bool is_true() const
Return whether the expression is a constant representing true.
bool is_boolean() const
Return whether the expression represents a Boolean.
bool is_false() const
Return whether the expression is a constant representing false.
bool is_zero() const
Return whether the expression is a constant representing 0.
bool is_constant() const
Return whether the expression is a constant.
typet & type()
Return the type of the expression.
void add_to_operands(const exprt &expr)
Add the given argument to the end of exprt's operands.
The Boolean constant false.
constant_exprt to_expr() const
constant_exprt to_expr() const
void change_spec(const ieee_float_spect &dest_spec)
The trinary if-then-else operator.
mp_integer largest() const
Return the largest value that can be represented using this type.
void set(const irep_idt &name, const irep_idt &value)
const irep_idt & id() const
const std::string & get_string(const irep_idt &name) const
Modulo defined as lhs-(rhs * truncate(lhs/rhs)).
Binary multiplication Associativity is not specified.
A base class for multi-ary expressions Associativity is not specified.
const union_typet & follow_tag(const union_tag_typet &) const
Follow type tag of union type.
The null pointer constant.
The plus expression Associativity is not specified.
The offset (in bytes) of a pointer relative to the object.
The pointer type These are both 'bitvector_typet' (they have a width) and 'type_with_subtypet' (they ...
A base class for shift and rotate operators.
static bool is_bitvector_type(const typet &type)
resultt simplify_bitwise(const multi_ary_exprt &)
resultt simplify_power(const binary_exprt &)
resultt simplify_inequality_address_of(const binary_relation_exprt &)
resultt simplify_div(const div_exprt &)
resultt simplify_bitreverse(const bitreverse_exprt &)
Try to simplify bit-reversing to a constant expression.
resultt simplify_bitnot(const bitnot_exprt &)
static resultt changed(resultt<> result)
resultt simplify_if(const if_exprt &)
resultt simplify_minus(const minus_exprt &)
resultt simplify_extractbit(const extractbit_exprt &)
resultt simplify_rec(const exprt &)
resultt simplify_shifts(const shift_exprt &)
resultt simplify_typecast(const typecast_exprt &)
resultt simplify_boolean(const exprt &)
resultt simplify_object(const exprt &)
resultt simplify_mult(const mult_exprt &)
resultt simplify_inequality_rhs_is_constant(const binary_relation_exprt &)
resultt simplify_inequality(const binary_relation_exprt &)
simplifies inequalities !=, <=, <, >=, >, and also ==
resultt simplify_not(const not_exprt &)
resultt simplify_bswap(const bswap_exprt &)
resultt simplify_inequality_pointer_object(const binary_relation_exprt &)
static resultt unchanged(exprt expr)
resultt simplify_extractbits(const extractbits_exprt &)
Simplifies extracting of bits from a constant.
resultt simplify_mod(const mod_exprt &)
resultt simplify_pointer_offset(const pointer_offset_exprt &)
resultt simplify_plus(const plus_exprt &)
resultt simplify_inequality_no_constant(const binary_relation_exprt &)
resultt simplify_unary_plus(const unary_plus_exprt &)
resultt simplify_node(exprt)
resultt simplify_concatenation(const concatenation_exprt &)
resultt simplify_inequality_both_constant(const binary_relation_exprt &)
simplifies inequalities for the case in which both sides of the inequality are constants
resultt simplify_unary_minus(const unary_minus_exprt &)
The Boolean constant true.
Semantic type conversion.
static exprt conditional_cast(const exprt &expr, const typet &type)
The type of an expression, extends irept.
The unary minus expression.
The unary plus expression.
Fixed-width bit-vector with unsigned binary interpretation.
#define Forall_operands(it, expr)
#define Forall_expr(it, expr)
auto type_try_dynamic_cast(TType &base) -> typename detail::expr_try_dynamic_cast_return_typet< T, TType >::type
Try to cast a reference to a generic typet to a specific derived class.
auto expr_try_dynamic_cast(TExpr &base) -> typename detail::expr_try_dynamic_cast_return_typet< T, TExpr >::type
Try to cast a reference to a generic exprt to a specific derived class.
constant_exprt make_boolean_expr(bool value)
returns true_exprt if given true and false_exprt otherwise
const exprt & skip_typecast(const exprt &expr)
find the expression nested inside typecasts, if any
if_exprt lift_if(const exprt &src, std::size_t operand_number)
lift up an if_exprt one level
bool is_null_pointer(const constant_exprt &expr)
Returns true if expr has a pointer type and a value NULL; it also returns true when expr has value ze...
Deprecated expression utility functions.
bool is_number(const typet &type)
Returns true if the type is a rational, real, integer, natural, complex, unsignedbv,...
nonstd::optional< T > optionalt
API to expression classes for Pointers.
const address_of_exprt & to_address_of_expr(const exprt &expr)
Cast an exprt to an address_of_exprt.
const pointer_typet & to_pointer_type(const typet &type)
Cast a typet to a pointer_typet.
optionalt< mp_integer > pointer_offset_size(const typet &type, const namespacet &ns)
Compute the size of a type in bytes, rounding up to full bytes.
optionalt< exprt > size_of_expr(const typet &type, const namespacet &ns)
optionalt< mp_integer > pointer_offset_bits(const typet &type, const namespacet &ns)
exprt object_size(const exprt &pointer)
static bool mul_expr(constant_exprt &dest, const constant_exprt &expr)
produce a product of two expressions of the same type
static bool sum_expr(constant_exprt &dest, const constant_exprt &expr)
produce a sum of two constant expressions of the same type
static bool eliminate_common_addends(exprt &op0, exprt &op1)
optionalt< exprt > bits2expr(const std::string &bits, const typet &type, bool little_endian, const namespacet &ns)
optionalt< std::string > expr2bits(const exprt &expr, bool little_endian, const namespacet &ns)
#define UNREACHABLE
This should be used to mark dead code.
#define DATA_INVARIANT(CONDITION, REASON)
This condition should be used to document that assumptions that are made on goto_functions,...
#define PRECONDITION(CONDITION)
#define INVARIANT(CONDITION, REASON)
This macro uses the wrapper function 'invariant_violated_string'.
API to expression classes.
const binary_relation_exprt & to_binary_relation_expr(const exprt &expr)
Cast an exprt to a binary_relation_exprt.
const typecast_exprt & to_typecast_expr(const exprt &expr)
Cast an exprt to a typecast_exprt.
const plus_exprt & to_plus_expr(const exprt &expr)
Cast an exprt to a plus_exprt.
const minus_exprt & to_minus_expr(const exprt &expr)
Cast an exprt to a minus_exprt.
const constant_exprt & to_constant_expr(const exprt &expr)
Cast an exprt to a constant_exprt.
const unary_minus_exprt & to_unary_minus_expr(const exprt &expr)
Cast an exprt to a unary_minus_exprt.
const equal_exprt & to_equal_expr(const exprt &expr)
Cast an exprt to an equal_exprt.