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Refactored FPA numeral accessors.

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This commit is contained in:
Christoph M. Wintersteiger 2016-10-21 17:39:31 +01:00
parent 0a11e8f3c0
commit abcb6040d4
6 changed files with 175 additions and 172 deletions
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102
src/api/api_fpa.cpp
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@ -946,7 +946,7 @@ extern "C" {
fpa_util & fu = mk_c(c)->fpautil();
api::context * ctx = mk_c(c);
expr * e = to_expr(t);
if (!is_app(e) || is_app_of(e, fid, OP_FPA_NAN) || !fu.is_fp(e)) {
if (!is_app(e) || is_app_of(e, fid, OP_FPA_NAN) || !is_fp(c, t)) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
@ -956,6 +956,7 @@ extern "C" {
SET_ERROR_CODE(Z3_INVALID_ARG);
return 0;
}
std::cout << "val=" << mpfm.to_string(val) << std::endl;
app * a;
if (mpfm.is_pos(val))
a = ctx->bvutil().mk_numeral(0, 1);
@ -966,44 +967,6 @@ extern "C" {
Z3_CATCH_RETURN(0);
}
Z3_ast Z3_API Z3_fpa_get_numeral_exponent_bv(Z3_context c, Z3_ast t) {
Z3_TRY;
LOG_Z3_fpa_get_numeral_exponent_bv(c, t);
RESET_ERROR_CODE();
CHECK_NON_NULL(t, 0);
CHECK_VALID_AST(t, 0);
ast_manager & m = mk_c(c)->m();
mpf_manager & mpfm = mk_c(c)->fpautil().fm();
unsynch_mpq_manager & mpqm = mpfm.mpq_manager();
family_id fid = mk_c(c)->get_fpa_fid();
fpa_decl_plugin * plugin = (fpa_decl_plugin*)m.get_plugin(fid);
fpa_util & fu = mk_c(c)->fpautil();
expr * e = to_expr(t);
if (!is_app(e) || is_app_of(e, fid, OP_FPA_NAN) || !fu.is_fp(e)) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
scoped_mpf val(mpfm);
bool r = plugin->is_numeral(e, val);
if (!r || !(mpfm.is_normal(val) || mpfm.is_denormal(val) || mpfm.is_zero(val) || mpfm.is_inf(val))) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
unsigned ebits = val.get().get_ebits();
mpf_exp_t q = mpfm.exp(val);
mpf_exp_t q_biassed = mpfm.bias_exp(ebits, q);
app * a;
if (mpfm.is_inf(val))
a = mk_c(c)->bvutil().mk_numeral(-1, ebits);
else if (mpfm.is_zero(val) || mpfm.is_denormal(val))
a = mk_c(c)->bvutil().mk_numeral(0, ebits);
else
a = mk_c(c)->bvutil().mk_numeral(q_biassed, ebits);
mk_c(c)->save_ast_trail(a);
RETURN_Z3(of_expr(a));
Z3_CATCH_RETURN(0);
}
Z3_ast Z3_API Z3_fpa_get_numeral_significand_bv(Z3_context c, Z3_ast t) {
Z3_TRY;
LOG_Z3_fpa_get_numeral_significand_bv(c, t);
@ -1018,7 +981,7 @@ extern "C" {
SASSERT(plugin != 0);
fpa_util & fu = mk_c(c)->fpautil();
expr * e = to_expr(t);
if (!is_app(e) || is_app_of(e, fid, OP_FPA_NAN) || !fu.is_fp(e)) {
if (!is_app(e) || is_app_of(e, fid, OP_FPA_NAN) || !is_fp(c, t)) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
@ -1106,9 +1069,9 @@ extern "C" {
Z3_CATCH_RETURN(0);
}
Z3_string Z3_API Z3_fpa_get_numeral_exponent_string(Z3_context c, Z3_ast t) {
Z3_string Z3_API Z3_fpa_get_numeral_exponent_string(Z3_context c, Z3_ast t, Z3_bool biased) {
Z3_TRY;
LOG_Z3_fpa_get_numeral_exponent_string(c, t);
LOG_Z3_fpa_get_numeral_exponent_string(c, t, biased);
RESET_ERROR_CODE();
ast_manager & m = mk_c(c)->m();
mpf_manager & mpfm = mk_c(c)->fpautil().fm();
@ -1127,19 +1090,21 @@ extern "C" {
SET_ERROR_CODE(Z3_INVALID_ARG);
return "";
}
unsigned ebits = val.get().get_ebits();
mpf_exp_t exp = mpfm.is_zero(val) ? 0 :
mpfm.is_denormal(val) ? mpfm.mk_min_exp(val.get().get_ebits()) :
mpfm.is_inf(val) ? mpfm.mk_top_exp(val.get().get_ebits()) :
mpfm.exp(val);
mpfm.is_denormal(val) ? mpfm.mk_min_exp(ebits) :
mpfm.is_inf(val) ? mpfm.mk_top_exp(ebits) :
mpfm.bias_exp(ebits, mpfm.exp(val));
if (!biased) mpfm.unbias_exp(ebits, exp);
std::stringstream ss;
ss << exp;
return mk_c(c)->mk_external_string(ss.str());
Z3_CATCH_RETURN("");
}
Z3_bool Z3_API Z3_fpa_get_numeral_exponent_int64(Z3_context c, Z3_ast t, __int64 * n) {
Z3_bool Z3_API Z3_fpa_get_numeral_exponent_int64(Z3_context c, Z3_ast t, __int64 * n, Z3_bool biased) {
Z3_TRY;
LOG_Z3_fpa_get_numeral_exponent_int64(c, t, n);
LOG_Z3_fpa_get_numeral_exponent_int64(c, t, n, biased);
RESET_ERROR_CODE();
ast_manager & m = mk_c(c)->m();
mpf_manager & mpfm = mk_c(c)->fpautil().fm();
@ -1160,14 +1125,51 @@ extern "C" {
*n = 0;
return 0;
}
unsigned ebits = val.get().get_ebits();
*n = mpfm.is_zero(val) ? 0 :
mpfm.is_denormal(val) ? mpfm.mk_min_exp(val.get().get_ebits()) :
mpfm.is_inf(val) ? mpfm.mk_top_exp(val.get().get_ebits()) :
mpfm.exp(val);
mpfm.is_denormal(val) ? mpfm.mk_min_exp(ebits) :
mpfm.is_inf(val) ? mpfm.mk_top_exp(ebits) :
mpfm.bias_exp(ebits, mpfm.exp(val));
if (!biased) *n = mpfm.unbias_exp(ebits, *n);
return 1;
Z3_CATCH_RETURN(0);
}
Z3_ast Z3_API Z3_fpa_get_numeral_exponent_bv(Z3_context c, Z3_ast t, Z3_bool biased) {
Z3_TRY;
LOG_Z3_fpa_get_numeral_exponent_bv(c, t, biased);
RESET_ERROR_CODE();
CHECK_NON_NULL(t, 0);
CHECK_VALID_AST(t, 0);
ast_manager & m = mk_c(c)->m();
mpf_manager & mpfm = mk_c(c)->fpautil().fm();
unsynch_mpq_manager & mpqm = mpfm.mpq_manager();
family_id fid = mk_c(c)->get_fpa_fid();
fpa_decl_plugin * plugin = (fpa_decl_plugin*)m.get_plugin(fid);
fpa_util & fu = mk_c(c)->fpautil();
expr * e = to_expr(t);
if (!is_app(e) || is_app_of(e, fid, OP_FPA_NAN) || !is_fp(c, t)) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
scoped_mpf val(mpfm);
bool r = plugin->is_numeral(e, val);
if (!r || !(mpfm.is_normal(val) || mpfm.is_denormal(val) || mpfm.is_zero(val) || mpfm.is_inf(val))) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
unsigned ebits = val.get().get_ebits();
mpf_exp_t exp = mpfm.is_zero(val) ? 0 :
mpfm.is_denormal(val) ? mpfm.mk_min_exp(ebits) :
mpfm.is_inf(val) ? mpfm.mk_top_exp(ebits) :
mpfm.bias_exp(ebits, mpfm.exp(val));
if (!biased) exp = mpfm.unbias_exp(ebits, exp);
app * a = mk_c(c)->bvutil().mk_numeral(exp, ebits);
mk_c(c)->save_ast_trail(a);
RETURN_Z3(of_expr(a));
Z3_CATCH_RETURN(0);
}
Z3_ast Z3_API Z3_mk_fpa_to_ieee_bv(Z3_context c, Z3_ast t) {
Z3_TRY;
LOG_Z3_mk_fpa_to_ieee_bv(c, t);