blob: 61b76a37d0350289d1ca88f4481764518242f6a5 [file] [log] [blame]
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/bootstrap_natives.h"
#include <math.h>
#include "vm/dart_entry.h"
#include "vm/double_conversion.h"
#include "vm/double_internals.h"
#include "vm/exceptions.h"
#include "vm/native_entry.h"
#include "vm/object.h"
#include "vm/runtime_entry.h" // DartModulo.
#include "vm/symbols.h"
namespace dart {
DEFINE_NATIVE_ENTRY(Double_doubleFromInteger, 0, 2) {
ASSERT(
TypeArguments::CheckedHandle(zone, arguments->NativeArgAt(0)).IsNull());
GET_NON_NULL_NATIVE_ARGUMENT(Integer, value, arguments->NativeArgAt(1));
if (FLAG_trace_intrinsified_natives) {
OS::PrintErr("Double_doubleFromInteger %s\n", value.ToCString());
}
return Double::New(value.AsDoubleValue());
}
DEFINE_NATIVE_ENTRY(Double_add, 0, 2) {
double left = Double::CheckedHandle(zone, arguments->NativeArgAt(0)).value();
GET_NON_NULL_NATIVE_ARGUMENT(Double, right_object, arguments->NativeArgAt(1));
double right = right_object.value();
if (FLAG_trace_intrinsified_natives) {
OS::PrintErr("Double_add %f + %f\n", left, right);
}
return Double::New(left + right);
}
DEFINE_NATIVE_ENTRY(Double_sub, 0, 2) {
double left = Double::CheckedHandle(zone, arguments->NativeArgAt(0)).value();
GET_NON_NULL_NATIVE_ARGUMENT(Double, right_object, arguments->NativeArgAt(1));
double right = right_object.value();
if (FLAG_trace_intrinsified_natives) {
OS::PrintErr("Double_sub %f - %f\n", left, right);
}
return Double::New(left - right);
}
DEFINE_NATIVE_ENTRY(Double_mul, 0, 2) {
double left = Double::CheckedHandle(zone, arguments->NativeArgAt(0)).value();
GET_NON_NULL_NATIVE_ARGUMENT(Double, right_object, arguments->NativeArgAt(1));
double right = right_object.value();
if (FLAG_trace_intrinsified_natives) {
OS::PrintErr("Double_mul %f * %f\n", left, right);
}
return Double::New(left * right);
}
DEFINE_NATIVE_ENTRY(Double_div, 0, 2) {
double left = Double::CheckedHandle(zone, arguments->NativeArgAt(0)).value();
GET_NON_NULL_NATIVE_ARGUMENT(Double, right_object, arguments->NativeArgAt(1));
double right = right_object.value();
if (FLAG_trace_intrinsified_natives) {
OS::PrintErr("Double_div %f / %f\n", left, right);
}
return Double::New(left / right);
}
static IntegerPtr DoubleToInteger(double val, const char* error_msg) {
if (isinf(val) || isnan(val)) {
const Array& args = Array::Handle(Array::New(1));
args.SetAt(0, String::Handle(String::New(error_msg)));
Exceptions::ThrowByType(Exceptions::kUnsupported, args);
}
int64_t ival = 0;
if (val <= static_cast<double>(kMinInt64)) {
ival = kMinInt64;
} else if (val >= static_cast<double>(kMaxInt64)) {
ival = kMaxInt64;
} else { // Representable in int64_t.
ival = static_cast<int64_t>(val);
}
return Integer::New(ival);
}
DEFINE_NATIVE_ENTRY(Double_hashCode, 0, 1) {
double val = Double::CheckedHandle(zone, arguments->NativeArgAt(0)).value();
if (FLAG_trace_intrinsified_natives) {
OS::PrintErr("Double_hashCode %f\n", val);
}
if ((val >= kMinInt64RepresentableAsDouble) &&
(val <= kMaxInt64RepresentableAsDouble)) {
int64_t ival = static_cast<int64_t>(val);
if (static_cast<double>(ival) == val) {
return Integer::New(ival);
}
}
uint64_t uval = bit_cast<uint64_t>(val);
return Smi::New(((uval >> 32) ^ (uval)) & kSmiMax);
}
DEFINE_NATIVE_ENTRY(Double_trunc_div, 0, 2) {
double left = Double::CheckedHandle(zone, arguments->NativeArgAt(0)).value();
GET_NON_NULL_NATIVE_ARGUMENT(Double, right_object, arguments->NativeArgAt(1));
double right = right_object.value();
if (FLAG_trace_intrinsified_natives) {
OS::PrintErr("Double_trunc_div %f ~/ %f\n", left, right);
}
return DoubleToInteger(trunc(left / right),
"Result of truncating division is Infinity or NaN");
}
DEFINE_NATIVE_ENTRY(Double_modulo, 0, 2) {
double left = Double::CheckedHandle(zone, arguments->NativeArgAt(0)).value();
GET_NON_NULL_NATIVE_ARGUMENT(Double, right_object, arguments->NativeArgAt(1));
double right = right_object.value();
return Double::New(DartModulo(left, right));
}
DEFINE_NATIVE_ENTRY(Double_remainder, 0, 2) {
double left = Double::CheckedHandle(zone, arguments->NativeArgAt(0)).value();
GET_NON_NULL_NATIVE_ARGUMENT(Double, right_object, arguments->NativeArgAt(1));
double right = right_object.value();
return Double::New(fmod_ieee(left, right));
}
DEFINE_NATIVE_ENTRY(Double_greaterThan, 0, 2) {
const Double& left = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
GET_NON_NULL_NATIVE_ARGUMENT(Double, right, arguments->NativeArgAt(1));
bool result = right.IsNull() ? false : (left.value() > right.value());
if (FLAG_trace_intrinsified_natives) {
OS::PrintErr("Double_greaterThan %s > %s\n", left.ToCString(),
right.ToCString());
}
return Bool::Get(result).raw();
}
DEFINE_NATIVE_ENTRY(Double_greaterThanFromInteger, 0, 2) {
const Double& right = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
GET_NON_NULL_NATIVE_ARGUMENT(Integer, left, arguments->NativeArgAt(1));
return Bool::Get(left.AsDoubleValue() > right.value()).raw();
}
DEFINE_NATIVE_ENTRY(Double_equal, 0, 2) {
const Double& left = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
GET_NON_NULL_NATIVE_ARGUMENT(Double, right, arguments->NativeArgAt(1));
bool result = right.IsNull() ? false : (left.value() == right.value());
if (FLAG_trace_intrinsified_natives) {
OS::PrintErr("Double_equal %s == %s\n", left.ToCString(),
right.ToCString());
}
return Bool::Get(result).raw();
}
DEFINE_NATIVE_ENTRY(Double_equalToInteger, 0, 2) {
const Double& left = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
GET_NON_NULL_NATIVE_ARGUMENT(Integer, right, arguments->NativeArgAt(1));
return Bool::Get(left.value() == right.AsDoubleValue()).raw();
}
DEFINE_NATIVE_ENTRY(Double_round, 0, 1) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
return Double::New(round(arg.value()));
}
DEFINE_NATIVE_ENTRY(Double_floor, 0, 1) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
return Double::New(floor(arg.value()));
}
DEFINE_NATIVE_ENTRY(Double_ceil, 0, 1) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
return Double::New(ceil(arg.value()));
}
DEFINE_NATIVE_ENTRY(Double_truncate, 0, 1) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
return Double::New(trunc(arg.value()));
}
#if defined(HOST_OS_MACOS)
// MAC OSX math library produces old style cast warning.
#pragma GCC diagnostic ignored "-Wold-style-cast"
#endif
DEFINE_NATIVE_ENTRY(Double_toInt, 0, 1) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
return DoubleToInteger(arg.value(), "Infinity or NaN toInt");
}
DEFINE_NATIVE_ENTRY(Double_parse, 0, 3) {
GET_NON_NULL_NATIVE_ARGUMENT(String, value, arguments->NativeArgAt(0));
GET_NON_NULL_NATIVE_ARGUMENT(Integer, startValue, arguments->NativeArgAt(1));
GET_NON_NULL_NATIVE_ARGUMENT(Integer, endValue, arguments->NativeArgAt(2));
const intptr_t start = startValue.AsTruncatedUint32Value();
const intptr_t end = endValue.AsTruncatedUint32Value();
const intptr_t len = value.Length();
// Indices should be inside the string, and 0 <= start < end <= len.
if (0 <= start && start < end && end <= len) {
double double_value;
if (String::ParseDouble(value, start, end, &double_value)) {
return Double::New(double_value);
}
}
return Object::null();
}
DEFINE_NATIVE_ENTRY(Double_toString, 0, 1) {
const Number& number = Number::CheckedHandle(zone, arguments->NativeArgAt(0));
return number.ToString(Heap::kNew);
}
DEFINE_NATIVE_ENTRY(Double_toStringAsFixed, 0, 2) {
// The boundaries are exclusive.
static const double kLowerBoundary = -1e21;
static const double kUpperBoundary = 1e21;
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
GET_NON_NULL_NATIVE_ARGUMENT(Smi, fraction_digits, arguments->NativeArgAt(1));
double d = arg.value();
intptr_t fraction_digits_value = fraction_digits.Value();
if (0 <= fraction_digits_value && fraction_digits_value <= 20 &&
kLowerBoundary < d && d < kUpperBoundary) {
return DoubleToStringAsFixed(d, static_cast<int>(fraction_digits_value));
} else {
Exceptions::ThrowArgumentError(String::Handle(
String::New("Illegal arguments to double.toStringAsFixed")));
return Object::null();
}
}
DEFINE_NATIVE_ENTRY(Double_toStringAsExponential, 0, 2) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
GET_NON_NULL_NATIVE_ARGUMENT(Smi, fraction_digits, arguments->NativeArgAt(1));
double d = arg.value();
intptr_t fraction_digits_value = fraction_digits.Value();
if (-1 <= fraction_digits_value && fraction_digits_value <= 20) {
return DoubleToStringAsExponential(d,
static_cast<int>(fraction_digits_value));
} else {
Exceptions::ThrowArgumentError(String::Handle(
String::New("Illegal arguments to double.toStringAsExponential")));
return Object::null();
}
}
DEFINE_NATIVE_ENTRY(Double_toStringAsPrecision, 0, 2) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
GET_NON_NULL_NATIVE_ARGUMENT(Smi, precision, arguments->NativeArgAt(1));
double d = arg.value();
intptr_t precision_value = precision.Value();
if (1 <= precision_value && precision_value <= 21) {
return DoubleToStringAsPrecision(d, static_cast<int>(precision_value));
} else {
Exceptions::ThrowArgumentError(String::Handle(
String::New("Illegal arguments to double.toStringAsPrecision")));
return Object::null();
}
}
DEFINE_NATIVE_ENTRY(Double_getIsInfinite, 0, 1) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
return Bool::Get(isinf(arg.value())).raw();
}
DEFINE_NATIVE_ENTRY(Double_getIsNaN, 0, 1) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
return Bool::Get(isnan(arg.value())).raw();
}
DEFINE_NATIVE_ENTRY(Double_getIsNegative, 0, 1) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
// Include negative zero, infinity.
double dval = arg.value();
return Bool::Get(signbit(dval) && !isnan(dval)).raw();
}
DEFINE_NATIVE_ENTRY(Double_flipSignBit, 0, 1) {
const Double& arg = Double::CheckedHandle(zone, arguments->NativeArgAt(0));
const double in_val = arg.value();
const int64_t bits = bit_cast<int64_t, double>(in_val) ^ kSignBitDouble;
return Double::New(bit_cast<double, int64_t>(bits));
}
// Add here only functions using/referring to old-style casts.
} // namespace dart