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Side by Side Diff: src/conversions.h

Issue 8680013: Remove the static qualifier from functions in header files. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Restored static const references on ARM and MIPS. Created 9 years, 1 month ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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38 // Maximum number of significant digits in decimal representation. 38 // Maximum number of significant digits in decimal representation.
39 // The longest possible double in decimal representation is 39 // The longest possible double in decimal representation is
40 // (2^53 - 1) * 2 ^ -1074 that is (2 ^ 53 - 1) * 5 ^ 1074 / 10 ^ 1074 40 // (2^53 - 1) * 2 ^ -1074 that is (2 ^ 53 - 1) * 5 ^ 1074 / 10 ^ 1074
41 // (768 digits). If we parse a number whose first digits are equal to a 41 // (768 digits). If we parse a number whose first digits are equal to a
42 // mean of 2 adjacent doubles (that could have up to 769 digits) the result 42 // mean of 2 adjacent doubles (that could have up to 769 digits) the result
43 // must be rounded to the bigger one unless the tail consists of zeros, so 43 // must be rounded to the bigger one unless the tail consists of zeros, so
44 // we don't need to preserve all the digits. 44 // we don't need to preserve all the digits.
45 const int kMaxSignificantDigits = 772; 45 const int kMaxSignificantDigits = 772;
46 46
47 47
48 static inline bool isDigit(int x, int radix) { 48 inline bool isDigit(int x, int radix) {
49 return (x >= '0' && x <= '9' && x < '0' + radix) 49 return (x >= '0' && x <= '9' && x < '0' + radix)
50 || (radix > 10 && x >= 'a' && x < 'a' + radix - 10) 50 || (radix > 10 && x >= 'a' && x < 'a' + radix - 10)
51 || (radix > 10 && x >= 'A' && x < 'A' + radix - 10); 51 || (radix > 10 && x >= 'A' && x < 'A' + radix - 10);
52 } 52 }
53 53
54 54
55 static inline double SignedZero(bool negative) { 55 inline double SignedZero(bool negative) {
56 return negative ? -0.0 : 0.0; 56 return negative ? -0.0 : 0.0;
57 } 57 }
58 58
59 59
60 // The fast double-to-(unsigned-)int conversion routine does not guarantee 60 // The fast double-to-(unsigned-)int conversion routine does not guarantee
61 // rounding towards zero. 61 // rounding towards zero.
62 // The result is unspecified if x is infinite or NaN, or if the rounded 62 // The result is unspecified if x is infinite or NaN, or if the rounded
63 // integer value is outside the range of type int. 63 // integer value is outside the range of type int.
64 static inline int FastD2I(double x) { 64 inline int FastD2I(double x) {
65 // The static_cast convertion from double to int used to be slow, but 65 // The static_cast convertion from double to int used to be slow, but
66 // as new benchmarks show, now it is much faster than lrint(). 66 // as new benchmarks show, now it is much faster than lrint().
67 return static_cast<int>(x); 67 return static_cast<int>(x);
68 } 68 }
69 69
70 static inline unsigned int FastD2UI(double x); 70 inline unsigned int FastD2UI(double x);
71 71
72 72
73 static inline double FastI2D(int x) { 73 inline double FastI2D(int x) {
74 // There is no rounding involved in converting an integer to a 74 // There is no rounding involved in converting an integer to a
75 // double, so this code should compile to a few instructions without 75 // double, so this code should compile to a few instructions without
76 // any FPU pipeline stalls. 76 // any FPU pipeline stalls.
77 return static_cast<double>(x); 77 return static_cast<double>(x);
78 } 78 }
79 79
80 80
81 static inline double FastUI2D(unsigned x) { 81 inline double FastUI2D(unsigned x) {
82 // There is no rounding involved in converting an unsigned integer to a 82 // There is no rounding involved in converting an unsigned integer to a
83 // double, so this code should compile to a few instructions without 83 // double, so this code should compile to a few instructions without
84 // any FPU pipeline stalls. 84 // any FPU pipeline stalls.
85 return static_cast<double>(x); 85 return static_cast<double>(x);
86 } 86 }
87 87
88 88
89 // This function should match the exact semantics of ECMA-262 9.4. 89 // This function should match the exact semantics of ECMA-262 9.4.
90 static inline double DoubleToInteger(double x); 90 inline double DoubleToInteger(double x);
91 91
92 92
93 // This function should match the exact semantics of ECMA-262 9.5. 93 // This function should match the exact semantics of ECMA-262 9.5.
94 static inline int32_t DoubleToInt32(double x); 94 inline int32_t DoubleToInt32(double x);
95 95
96 96
97 // This function should match the exact semantics of ECMA-262 9.6. 97 // This function should match the exact semantics of ECMA-262 9.6.
98 static inline uint32_t DoubleToUint32(double x) { 98 inline uint32_t DoubleToUint32(double x) {
99 return static_cast<uint32_t>(DoubleToInt32(x)); 99 return static_cast<uint32_t>(DoubleToInt32(x));
100 } 100 }
101 101
102 102
103 // Enumeration for allowing octals and ignoring junk when converting 103 // Enumeration for allowing octals and ignoring junk when converting
104 // strings to numbers. 104 // strings to numbers.
105 enum ConversionFlags { 105 enum ConversionFlags {
106 NO_FLAGS = 0, 106 NO_FLAGS = 0,
107 ALLOW_HEX = 1, 107 ALLOW_HEX = 1,
108 ALLOW_OCTALS = 2, 108 ALLOW_OCTALS = 2,
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139 // Additional number to string conversions for the number type. 139 // Additional number to string conversions for the number type.
140 // The caller is responsible for calling free on the returned pointer. 140 // The caller is responsible for calling free on the returned pointer.
141 char* DoubleToFixedCString(double value, int f); 141 char* DoubleToFixedCString(double value, int f);
142 char* DoubleToExponentialCString(double value, int f); 142 char* DoubleToExponentialCString(double value, int f);
143 char* DoubleToPrecisionCString(double value, int f); 143 char* DoubleToPrecisionCString(double value, int f);
144 char* DoubleToRadixCString(double value, int radix); 144 char* DoubleToRadixCString(double value, int radix);
145 145
146 } } // namespace v8::internal 146 } } // namespace v8::internal
147 147
148 #endif // V8_CONVERSIONS_H_ 148 #endif // V8_CONVERSIONS_H_
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