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      1 // Copyright 2014 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include <cmath>
      6 #include <limits>
      7 
      8 #include "src/objects.h"
      9 #include "src/objects-inl.h"
     10 
     11 #include "src/handles.h"
     12 #include "src/handles-inl.h"
     13 
     14 #include "src/heap/heap.h"
     15 #include "testing/gtest/include/gtest/gtest.h"
     16 
     17 namespace v8 {
     18 namespace internal {
     19 
     20 double Round(double x) {
     21   // Round to three digits.
     22   return floor(x * 1000 + 0.5) / 1000;
     23 }
     24 
     25 
     26 void CheckEqualRounded(double expected, double actual) {
     27   expected = Round(expected);
     28   actual = Round(actual);
     29   EXPECT_DOUBLE_EQ(expected, actual);
     30 }
     31 
     32 
     33 TEST(Heap, HeapGrowingFactor) {
     34   CheckEqualRounded(Heap::kMaxHeapGrowingFactor,
     35                     Heap::HeapGrowingFactor(34, 1));
     36   CheckEqualRounded(3.553, Heap::HeapGrowingFactor(45, 1));
     37   CheckEqualRounded(2.830, Heap::HeapGrowingFactor(50, 1));
     38   CheckEqualRounded(1.478, Heap::HeapGrowingFactor(100, 1));
     39   CheckEqualRounded(1.193, Heap::HeapGrowingFactor(200, 1));
     40   CheckEqualRounded(1.121, Heap::HeapGrowingFactor(300, 1));
     41   CheckEqualRounded(Heap::HeapGrowingFactor(300, 1),
     42                     Heap::HeapGrowingFactor(600, 2));
     43   CheckEqualRounded(Heap::kMinHeapGrowingFactor,
     44                     Heap::HeapGrowingFactor(400, 1));
     45 }
     46 
     47 }  // namespace internal
     48 }  // namespace v8
     49