Implement trigonometric functions using a fdlibm port.

src/runtime.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdlib.h>
 #include <limits>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 27 matching lines @@
 #include "src/runtime.h"
 #include "src/runtime-profiler.h"
 #include "src/scopeinfo.h"
 #include "src/smart-pointers.h"
 #include "src/string-search.h"
 #include "src/stub-cache.h"
 #include "src/uri.h"
 #include "src/utils.h"
 #include "src/v8threads.h"
 #include "src/vm-state-inl.h"
+#include "third_party/fdlibm/fdlibm.h"
 
 #ifdef V8_I18N_SUPPORT
 #include "src/i18n.h"
 #include "unicode/brkiter.h"
 #include "unicode/calendar.h"
 #include "unicode/coll.h"
 #include "unicode/curramt.h"
 #include "unicode/datefmt.h"
 #include "unicode/dcfmtsym.h"
 #include "unicode/decimfmt.h"
@@ skipping 7611 matching lines @@
 RUNTIME_FUNCTION(Runtime_ConstructDouble) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
   CONVERT_NUMBER_CHECKED(uint32_t, hi, Uint32, args[0]);
   CONVERT_NUMBER_CHECKED(uint32_t, lo, Uint32, args[1]);
   uint64_t result = (static_cast<uint64_t>(hi) << 32) | lo;
   return *isolate->factory()->NewNumber(uint64_to_double(result));
 }
 
 
+RUNTIME_FUNCTION(Runtime_RemPiO2) {
+  HandleScope handle_scope(isolate);
+  DCHECK(args.length() == 1);
+  CONVERT_DOUBLE_ARG_CHECKED(x, 0);
+  Factory* factory = isolate->factory();
+  double y[2];
+  int n = rempio2(x, y);
+  Handle<FixedArray> array = factory->NewFixedArray(3);
+  array->set(0, Smi::FromInt(n));
+  array->set(1, *factory->NewHeapNumber(y[0]));
+  array->set(2, *factory->NewHeapNumber(y[1]));
+  return *factory->NewJSArrayWithElements(array);
+}
+
+
 static const double kPiDividedBy4 = 0.78539816339744830962;
 
 
 RUNTIME_FUNCTION(Runtime_MathAtan2) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
   isolate->counters()->math_atan2()->Increment();
 
   CONVERT_DOUBLE_ARG_CHECKED(x, 0);
   CONVERT_DOUBLE_ARG_CHECKED(y, 1);
@@ skipping 7891 matching lines @@
   }
   return NULL;
 }
 
 
 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
   return &(kIntrinsicFunctions[static_cast<int>(id)]);
 }
 
 } }  // namespace v8::internal