mirror of
https://github.com/Z3Prover/z3
synced 2025-04-11 03:33:35 +00:00
200 lines
7.6 KiB
C++
200 lines
7.6 KiB
C++
/*++
|
|
Copyright (c) 2012 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
fpa2bv_converter.h
|
|
|
|
Abstract:
|
|
|
|
Conversion routines for Floating Point -> Bit-Vector
|
|
|
|
Author:
|
|
|
|
Christoph (cwinter) 2012-02-09
|
|
|
|
Notes:
|
|
|
|
--*/
|
|
#ifndef _FPA2BV_CONVERTER_
|
|
#define _FPA2BV_CONVERTER_
|
|
|
|
#include"ast.h"
|
|
#include"obj_hashtable.h"
|
|
#include"ref_util.h"
|
|
#include"float_decl_plugin.h"
|
|
#include"bv_decl_plugin.h"
|
|
#include"model_converter.h"
|
|
#include"basic_simplifier_plugin.h"
|
|
|
|
typedef enum { BV_RM_TIES_TO_AWAY=0, BV_RM_TIES_TO_EVEN=1, BV_RM_TO_NEGATIVE=2, BV_RM_TO_POSITIVE=3, BV_RM_TO_ZERO=4 } BV_RM_VAL;
|
|
|
|
class fpa2bv_model_converter;
|
|
|
|
class fpa2bv_converter {
|
|
ast_manager & m;
|
|
basic_simplifier_plugin m_simp;
|
|
float_util m_util;
|
|
mpf_manager & m_mpf_manager;
|
|
unsynch_mpz_manager & m_mpz_manager;
|
|
bv_util m_bv_util;
|
|
float_decl_plugin * m_plugin;
|
|
|
|
obj_map<func_decl, expr*> m_const2bv;
|
|
obj_map<func_decl, expr*> m_rm_const2bv;
|
|
|
|
public:
|
|
fpa2bv_converter(ast_manager & m);
|
|
~fpa2bv_converter();
|
|
|
|
float_util & fu() { return m_util; }
|
|
|
|
bool is_float(sort * s) { return m_util.is_float(s); }
|
|
bool is_float(expr * e) { return is_app(e) && m_util.is_float(to_app(e)->get_decl()->get_range()); }
|
|
bool is_float_family(func_decl * f) { return f->get_family_id() == m_util.get_family_id(); }
|
|
bool is_rm_sort(sort * s) { return m_util.is_rm(s); }
|
|
|
|
void mk_triple(expr * sign, expr * significand, expr * exponent, expr_ref & result) {
|
|
SASSERT(m_bv_util.is_bv(sign) && m_bv_util.get_bv_size(sign) == 1);
|
|
SASSERT(m_bv_util.is_bv(significand));
|
|
SASSERT(m_bv_util.is_bv(exponent));
|
|
result = m.mk_app(m_util.get_family_id(), OP_TO_FLOAT, sign, significand, exponent);
|
|
}
|
|
|
|
void mk_eq(expr * a, expr * b, expr_ref & result);
|
|
void mk_ite(expr * c, expr * t, expr * f, expr_ref & result);
|
|
|
|
void mk_rounding_mode(func_decl * f, expr_ref & result);
|
|
void mk_value(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_const(func_decl * f, expr_ref & result);
|
|
void mk_rm_const(func_decl * f, expr_ref & result);
|
|
|
|
void mk_plus_inf(func_decl * f, expr_ref & result);
|
|
void mk_minus_inf(func_decl * f, expr_ref & result);
|
|
void mk_nan(func_decl * f, expr_ref & result);
|
|
void mk_nzero(func_decl *f, expr_ref & result);
|
|
void mk_pzero(func_decl *f, expr_ref & result);
|
|
|
|
void mk_add(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_sub(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_uminus(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_mul(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_div(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_remainder(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_abs(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_min(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_max(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_fusedma(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_sqrt(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_round_to_integral(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
|
|
void mk_float_eq(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_float_lt(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_float_gt(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_float_le(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_float_ge(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
|
|
void mk_is_zero(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_is_nzero(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_is_pzero(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
void mk_is_sign_minus(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
|
|
void mk_to_float(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
|
|
|
|
fpa2bv_model_converter * mk_model_converter();
|
|
|
|
void dbg_decouple(const char * prefix, expr_ref & e);
|
|
expr_ref_vector extra_assertions;
|
|
|
|
protected:
|
|
void split(expr * e, expr * & sgn, expr * & sig, expr * & exp) const;
|
|
|
|
void mk_is_nan(expr * e, expr_ref & result);
|
|
void mk_is_inf(expr * e, expr_ref & result);
|
|
void mk_is_pinf(expr * e, expr_ref & result);
|
|
void mk_is_ninf(expr * e, expr_ref & result);
|
|
void mk_is_pos(expr * e, expr_ref & result);
|
|
void mk_is_neg(expr * e, expr_ref & result);
|
|
void mk_is_zero(expr * e, expr_ref & result);
|
|
void mk_is_nzero(expr * e, expr_ref & result);
|
|
void mk_is_pzero(expr * e, expr_ref & result);
|
|
void mk_is_denormal(expr * e, expr_ref & result);
|
|
void mk_is_normal(expr * e, expr_ref & result);
|
|
|
|
void mk_is_rm(expr * e, BV_RM_VAL rm, expr_ref & result);
|
|
|
|
void mk_top_exp(unsigned sz, expr_ref & result);
|
|
void mk_bot_exp(unsigned sz, expr_ref & result);
|
|
void mk_min_exp(unsigned ebits, expr_ref & result);
|
|
void mk_max_exp(unsigned ebits, expr_ref & result);
|
|
|
|
void mk_leading_zeros(expr * e, unsigned max_bits, expr_ref & result);
|
|
|
|
void mk_bias(expr * e, expr_ref & result);
|
|
void mk_unbias(expr * e, expr_ref & result);
|
|
|
|
void unpack(expr * e, expr_ref & sgn, expr_ref & sig, expr_ref & exp, bool normalize);
|
|
void round(sort * s, expr_ref & rm, expr_ref & sgn, expr_ref & sig, expr_ref & exp, expr_ref & result);
|
|
|
|
void add_core(unsigned sbits, unsigned ebits, expr_ref & rm,
|
|
expr_ref & c_sgn, expr_ref & c_sig, expr_ref & c_exp, expr_ref & d_sgn, expr_ref & d_sig, expr_ref & d_exp,
|
|
expr_ref & res_sgn, expr_ref & res_sig, expr_ref & res_exp);
|
|
};
|
|
|
|
|
|
class fpa2bv_model_converter : public model_converter {
|
|
ast_manager & m;
|
|
obj_map<func_decl, expr*> m_const2bv;
|
|
obj_map<func_decl, expr*> m_rm_const2bv;
|
|
|
|
public:
|
|
fpa2bv_model_converter(ast_manager & m, obj_map<func_decl, expr*> & const2bv,
|
|
obj_map<func_decl, expr*> & rm_const2bv) :
|
|
m(m) {
|
|
// Just create a copy?
|
|
for (obj_map<func_decl, expr*>::iterator it = const2bv.begin();
|
|
it != const2bv.end();
|
|
it++)
|
|
{
|
|
m_const2bv.insert(it->m_key, it->m_value);
|
|
m.inc_ref(it->m_key);
|
|
m.inc_ref(it->m_value);
|
|
}
|
|
for (obj_map<func_decl, expr*>::iterator it = rm_const2bv.begin();
|
|
it != rm_const2bv.end();
|
|
it++)
|
|
{
|
|
m_rm_const2bv.insert(it->m_key, it->m_value);
|
|
m.inc_ref(it->m_key);
|
|
m.inc_ref(it->m_value);
|
|
}
|
|
}
|
|
|
|
virtual ~fpa2bv_model_converter() {
|
|
dec_ref_map_key_values(m, m_const2bv);
|
|
dec_ref_map_key_values(m, m_rm_const2bv);
|
|
}
|
|
|
|
virtual void operator()(model_ref & md, unsigned goal_idx) {
|
|
SASSERT(goal_idx == 0);
|
|
model * new_model = alloc(model, m);
|
|
obj_hashtable<func_decl> bits;
|
|
convert(md.get(), new_model);
|
|
md = new_model;
|
|
}
|
|
|
|
virtual void operator()(model_ref & md) {
|
|
operator()(md, 0);
|
|
}
|
|
|
|
void display(std::ostream & out);
|
|
|
|
virtual model_converter * translate(ast_translation & translator);
|
|
|
|
protected:
|
|
fpa2bv_model_converter(ast_manager & m) : m(m) { }
|
|
|
|
void convert(model * bv_mdl, model * float_mdl);
|
|
};
|
|
|
|
#endif |