1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28 #include <stdlib.h>
29
30 #include "v8.h"
31
32 #include "platform.h"
33 #include "cctest.h"
34
35 using namespace v8::internal;
36
37
TEST(Utils1)38 TEST(Utils1) {
39 CHECK_EQ(-1000000, FastD2I(-1000000.0));
40 CHECK_EQ(-1, FastD2I(-1.0));
41 CHECK_EQ(0, FastD2I(0.0));
42 CHECK_EQ(1, FastD2I(1.0));
43 CHECK_EQ(1000000, FastD2I(1000000.0));
44
45 CHECK_EQ(-1000000, FastD2I(-1000000.123));
46 CHECK_EQ(-1, FastD2I(-1.234));
47 CHECK_EQ(0, FastD2I(0.345));
48 CHECK_EQ(1, FastD2I(1.234));
49 CHECK_EQ(1000000, FastD2I(1000000.123));
50 // Check that >> is implemented as arithmetic shift right.
51 // If this is not true, then ArithmeticShiftRight() must be changed,
52 // There are also documented right shifts in assembler.cc of
53 // int8_t and intptr_t signed integers.
54 CHECK_EQ(-2, -8 >> 2);
55 CHECK_EQ(-2, static_cast<int8_t>(-8) >> 2);
56 CHECK_EQ(-2, static_cast<int>(static_cast<intptr_t>(-8) >> 2));
57 }
58
59
TEST(SNPrintF)60 TEST(SNPrintF) {
61 // Make sure that strings that are truncated because of too small
62 // buffers are zero-terminated anyway.
63 const char* s = "the quick lazy .... oh forget it!";
64 int length = StrLength(s);
65 for (int i = 1; i < length * 2; i++) {
66 static const char kMarker = static_cast<char>(42);
67 Vector<char> buffer = Vector<char>::New(i + 1);
68 buffer[i] = kMarker;
69 int n = OS::SNPrintF(Vector<char>(buffer.start(), i), "%s", s);
70 CHECK(n <= i);
71 CHECK(n == length || n == -1);
72 CHECK_EQ(0, strncmp(buffer.start(), s, i - 1));
73 CHECK_EQ(kMarker, buffer[i]);
74 if (i <= length) {
75 CHECK_EQ(i - 1, StrLength(buffer.start()));
76 } else {
77 CHECK_EQ(length, StrLength(buffer.start()));
78 }
79 buffer.Dispose();
80 }
81 }
82