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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 | 2 |
3 #include <stdlib.h> | 3 #include <stdlib.h> |
4 | 4 |
5 #include "v8.h" | 5 #include "v8.h" |
6 | 6 |
7 #include "platform.h" | 7 #include "platform.h" |
8 #include "cctest.h" | 8 #include "cctest.h" |
9 #include "diy_fp.h" | 9 #include "diy_fp.h" |
10 | 10 |
| 11 |
11 using namespace v8::internal; | 12 using namespace v8::internal; |
12 | 13 |
13 | 14 |
14 TEST(Subtract) { | 15 TEST(Subtract) { |
15 DiyFp diy_fp1 = DiyFp(3, 0); | 16 DiyFp diy_fp1 = DiyFp(3, 0); |
16 DiyFp diy_fp2 = DiyFp(1, 0); | 17 DiyFp diy_fp2 = DiyFp(1, 0); |
17 DiyFp diff = DiyFp::Minus(diy_fp1, diy_fp2); | 18 DiyFp diff = DiyFp::Minus(diy_fp1, diy_fp2); |
18 | 19 |
19 CHECK(2 == diff.f()); | 20 CHECK(2 == diff.f()); // NOLINT |
20 CHECK_EQ(0, diff.e()); | 21 CHECK_EQ(0, diff.e()); |
21 diy_fp1.Subtract(diy_fp2); | 22 diy_fp1.Subtract(diy_fp2); |
22 CHECK(2 == diy_fp1.f()); | 23 CHECK(2 == diy_fp1.f()); // NOLINT |
23 CHECK_EQ(0, diy_fp1.e()); | 24 CHECK_EQ(0, diy_fp1.e()); |
24 } | 25 } |
25 | 26 |
26 | 27 |
27 TEST(Multiply) { | 28 TEST(Multiply) { |
28 DiyFp diy_fp1 = DiyFp(3, 0); | 29 DiyFp diy_fp1 = DiyFp(3, 0); |
29 DiyFp diy_fp2 = DiyFp(2, 0); | 30 DiyFp diy_fp2 = DiyFp(2, 0); |
30 DiyFp product = DiyFp::Times(diy_fp1, diy_fp2); | 31 DiyFp product = DiyFp::Times(diy_fp1, diy_fp2); |
31 | 32 |
32 CHECK(0 == product.f()); | 33 CHECK(0 == product.f()); // NOLINT |
33 CHECK_EQ(64, product.e()); | 34 CHECK_EQ(64, product.e()); |
34 diy_fp1.Multiply(diy_fp2); | 35 diy_fp1.Multiply(diy_fp2); |
35 CHECK(0 == diy_fp1.f()); | 36 CHECK(0 == diy_fp1.f()); // NOLINT |
36 CHECK_EQ(64, diy_fp1.e()); | 37 CHECK_EQ(64, diy_fp1.e()); |
37 | 38 |
38 diy_fp1 = DiyFp(V8_2PART_UINT64_C(0x80000000, 00000000), 11); | 39 diy_fp1 = DiyFp(V8_2PART_UINT64_C(0x80000000, 00000000), 11); |
39 diy_fp2 = DiyFp(2, 13); | 40 diy_fp2 = DiyFp(2, 13); |
40 product = DiyFp::Times(diy_fp1, diy_fp2); | 41 product = DiyFp::Times(diy_fp1, diy_fp2); |
41 CHECK(1 == product.f()); | 42 CHECK(1 == product.f()); // NOLINT |
42 CHECK_EQ(11 + 13 + 64, product.e()); | 43 CHECK_EQ(11 + 13 + 64, product.e()); |
43 | 44 |
44 // Test rounding. | 45 // Test rounding. |
45 diy_fp1 = DiyFp(V8_2PART_UINT64_C(0x80000000, 00000001), 11); | 46 diy_fp1 = DiyFp(V8_2PART_UINT64_C(0x80000000, 00000001), 11); |
46 diy_fp2 = DiyFp(1, 13); | 47 diy_fp2 = DiyFp(1, 13); |
47 product = DiyFp::Times(diy_fp1, diy_fp2); | 48 product = DiyFp::Times(diy_fp1, diy_fp2); |
48 CHECK(1 == product.f()); | 49 CHECK(1 == product.f()); // NOLINT |
49 CHECK_EQ(11 + 13 + 64, product.e()); | 50 CHECK_EQ(11 + 13 + 64, product.e()); |
50 | 51 |
51 diy_fp1 = DiyFp(V8_2PART_UINT64_C(0x7fffffff, ffffffff), 11); | 52 diy_fp1 = DiyFp(V8_2PART_UINT64_C(0x7fffffff, ffffffff), 11); |
52 diy_fp2 = DiyFp(1, 13); | 53 diy_fp2 = DiyFp(1, 13); |
53 product = DiyFp::Times(diy_fp1, diy_fp2); | 54 product = DiyFp::Times(diy_fp1, diy_fp2); |
54 CHECK(0 == product.f()); | 55 CHECK(0 == product.f()); // NOLINT |
55 CHECK_EQ(11 + 13 + 64, product.e()); | 56 CHECK_EQ(11 + 13 + 64, product.e()); |
56 | 57 |
57 // Halfway cases are allowed to round either way. So don't check for it. | 58 // Halfway cases are allowed to round either way. So don't check for it. |
58 | 59 |
59 // Big numbers. | 60 // Big numbers. |
60 diy_fp1 = DiyFp(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFF), 11); | 61 diy_fp1 = DiyFp(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFF), 11); |
61 diy_fp2 = DiyFp(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFF), 13); | 62 diy_fp2 = DiyFp(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFF), 13); |
62 // 128bit result: 0xfffffffffffffffe0000000000000001 | 63 // 128bit result: 0xfffffffffffffffe0000000000000001 |
63 product = DiyFp::Times(diy_fp1, diy_fp2); | 64 product = DiyFp::Times(diy_fp1, diy_fp2); |
64 CHECK(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFe) == product.f()); | 65 CHECK(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFe) == product.f()); |
65 CHECK_EQ(11 + 13 + 64, product.e()); | 66 CHECK_EQ(11 + 13 + 64, product.e()); |
66 } | 67 } |
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