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FPA: added rewriting and fpa2bv conversion rules for new operations.

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Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
This commit is contained in:
Christoph M. Wintersteiger 2013-06-07 18:03:46 +01:00
parent 123d3ec3a7
commit d7639557d2
5 changed files with 57 additions and 0 deletions
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33
src/ast/rewriter/float_rewriter.cpp
View file

@ -58,6 +58,9 @@ br_status float_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * c
case OP_FLOAT_IS_ZERO: SASSERT(num_args == 1); st = mk_is_zero(args[0], result); break;
case OP_FLOAT_IS_NZERO: SASSERT(num_args == 1); st = mk_is_nzero(args[0], result); break;
case OP_FLOAT_IS_PZERO: SASSERT(num_args == 1); st = mk_is_pzero(args[0], result); break;
case OP_FLOAT_IS_INF: SASSERT(num_args == 1); st = mk_is_inf(args[0], result); break;
case OP_FLOAT_IS_NORMAL: SASSERT(num_args == 1); st = mk_is_normal(args[0], result); break;
case OP_FLOAT_IS_SUBNORMAL: SASSERT(num_args == 1); st = mk_is_subnormal(args[0], result); break;
case OP_FLOAT_IS_SIGN_MINUS: SASSERT(num_args == 1); st = mk_is_sign_minus(args[0], result); break;
case OP_TO_IEEE_BV: SASSERT(num_args == 1); st = mk_to_ieee_bv(args[0], result); break;
}
@ -428,6 +431,36 @@ br_status float_rewriter::mk_is_pzero(expr * arg1, expr_ref & result) {
return BR_FAILED;
}
br_status float_rewriter::mk_is_inf(expr * arg1, expr_ref & result) {
scoped_mpf v(m_util.fm());
if (m_util.is_value(arg1, v)) {
result = (m_util.fm().is_inf(v)) ? m().mk_true() : m().mk_false();
return BR_DONE;
}
return BR_FAILED;
}
br_status float_rewriter::mk_is_normal(expr * arg1, expr_ref & result) {
scoped_mpf v(m_util.fm());
if (m_util.is_value(arg1, v)) {
result = (m_util.fm().is_normal(v)) ? m().mk_true() : m().mk_false();
return BR_DONE;
}
return BR_FAILED;
}
br_status float_rewriter::mk_is_subnormal(expr * arg1, expr_ref & result) {
scoped_mpf v(m_util.fm());
if (m_util.is_value(arg1, v)) {
result = (m_util.fm().is_denormal(v)) ? m().mk_true() : m().mk_false();
return BR_DONE;
}
return BR_FAILED;
}
br_status float_rewriter::mk_is_sign_minus(expr * arg1, expr_ref & result) {
scoped_mpf v(m_util.fm());
if (m_util.is_value(arg1, v)) {

3
src/ast/rewriter/float_rewriter.h
View file

@ -66,6 +66,9 @@ public:
br_status mk_is_zero(expr * arg1, expr_ref & result);
br_status mk_is_nzero(expr * arg1, expr_ref & result);
br_status mk_is_pzero(expr * arg1, expr_ref & result);
br_status mk_is_inf(expr * arg1, expr_ref & result);
br_status mk_is_normal(expr * arg1, expr_ref & result);
br_status mk_is_subnormal(expr * arg1, expr_ref & result);
br_status mk_is_sign_minus(expr * arg1, expr_ref & result);
br_status mk_to_ieee_bv(expr * arg1, expr_ref & result);

15
src/tactic/fpa/fpa2bv_converter.cpp
View file

@ -1621,6 +1621,21 @@ void fpa2bv_converter::mk_is_pzero(func_decl * f, unsigned num, expr * const * a
m_simp.mk_and(a0_is_pos, a0_is_zero, result);
}
void fpa2bv_converter::mk_is_inf(func_decl * f, unsigned num, expr * const * args, expr_ref & result) {
SASSERT(num == 1);
mk_is_inf(args[0], result);
}
void fpa2bv_converter::mk_is_normal(func_decl * f, unsigned num, expr * const * args, expr_ref & result) {
SASSERT(num == 1);
mk_is_normal(args[0], result);
}
void fpa2bv_converter::mk_is_subnormal(func_decl * f, unsigned num, expr * const * args, expr_ref & result) {
SASSERT(num == 1);
mk_is_denormal(args[0], result);
}
void fpa2bv_converter::mk_is_sign_minus(func_decl * f, unsigned num, expr * const * args, expr_ref & result) {
SASSERT(num == 1);
mk_is_neg(args[0], result);

3
src/tactic/fpa/fpa2bv_converter.h
View file

@ -116,6 +116,9 @@ public:
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_is_inf(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
void mk_is_normal(func_decl * f, unsigned num, expr * const * args, expr_ref & result);
void mk_is_subnormal(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);
void mk_to_ieee_bv(func_decl * f, unsigned num, expr * const * args, expr_ref & result);

3
src/tactic/fpa/fpa2bv_rewriter.h
View file

@ -132,6 +132,9 @@ struct fpa2bv_rewriter_cfg : public default_rewriter_cfg {
case OP_FLOAT_IS_ZERO: m_conv.mk_is_zero(f, num, args, result); return BR_DONE;
case OP_FLOAT_IS_NZERO: m_conv.mk_is_nzero(f, num, args, result); return BR_DONE;
case OP_FLOAT_IS_PZERO: m_conv.mk_is_pzero(f, num, args, result); return BR_DONE;
case OP_FLOAT_IS_INF: m_conv.mk_is_inf(f, num, args, result); return BR_DONE;
case OP_FLOAT_IS_NORMAL: m_conv.mk_is_normal(f, num, args, result); return BR_DONE;
case OP_FLOAT_IS_SUBNORMAL: m_conv.mk_is_subnormal(f, num, args, result); return BR_DONE;
case OP_FLOAT_IS_SIGN_MINUS: m_conv.mk_is_sign_minus(f, num, args, result); return BR_DONE;
case OP_TO_FLOAT: m_conv.mk_to_float(f, num, args, result); return BR_DONE;
case OP_TO_IEEE_BV: m_conv.mk_to_ieee_bv(f, num, args, result); return BR_DONE;