1 // © 2018 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 //
4 // From the double-conversion library. Original license:
5 //
6 // Copyright 2010 the V8 project authors. All rights reserved.
7 // Redistribution and use in source and binary forms, with or without
8 // modification, are permitted provided that the following conditions are
9 // met:
10 //
11 // * Redistributions of source code must retain the above copyright
12 // notice, this list of conditions and the following disclaimer.
13 // * Redistributions in binary form must reproduce the above
14 // copyright notice, this list of conditions and the following
15 // disclaimer in the documentation and/or other materials provided
16 // with the distribution.
17 // * Neither the name of Google Inc. nor the names of its
18 // contributors may be used to endorse or promote products derived
19 // from this software without specific prior written permission.
20 //
21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32
33 // ICU PATCH: ifdef around UCONFIG_NO_FORMATTING
34 #include "unicode/utypes.h"
35 #if !UCONFIG_NO_FORMATTING
36
37 #ifndef DOUBLE_CONVERSION_STRTOD_H_
38 #define DOUBLE_CONVERSION_STRTOD_H_
39
40 // ICU PATCH: Customize header file paths for ICU.
41
42 #include "double-conversion-utils.h"
43
44 // ICU PATCH: Wrap in ICU namespace
45 U_NAMESPACE_BEGIN
46
47 namespace double_conversion {
48
49 // The buffer must only contain digits in the range [0-9]. It must not
50 // contain a dot or a sign. It must not start with '0', and must not be empty.
51 double Strtod(Vector<const char> buffer, int exponent);
52
53 // The buffer must only contain digits in the range [0-9]. It must not
54 // contain a dot or a sign. It must not start with '0', and must not be empty.
55 float Strtof(Vector<const char> buffer, int exponent);
56
57 // Same as Strtod, but assumes that 'trimmed' is already trimmed, as if run
58 // through TrimAndCut. That is, 'trimmed' must have no leading or trailing
59 // zeros, must not be a lone zero, and must not have 'too many' digits.
60 double StrtodTrimmed(Vector<const char> trimmed, int exponent);
61
62 // Same as Strtof, but assumes that 'trimmed' is already trimmed, as if run
63 // through TrimAndCut. That is, 'trimmed' must have no leading or trailing
64 // zeros, must not be a lone zero, and must not have 'too many' digits.
65 float StrtofTrimmed(Vector<const char> trimmed, int exponent);
66
TrimTrailingZeros(Vector<const char> buffer)67 inline Vector<const char> TrimTrailingZeros(Vector<const char> buffer) {
68 for (int i = buffer.length() - 1; i >= 0; --i) {
69 if (buffer[i] != '0') {
70 return buffer.SubVector(0, i + 1);
71 }
72 }
73 return Vector<const char>(buffer.start(), 0);
74 }
75
76 } // namespace double_conversion
77
78 // ICU PATCH: Close ICU namespace
79 U_NAMESPACE_END
80
81 #endif // DOUBLE_CONVERSION_STRTOD_H_
82 #endif // ICU PATCH: close #if !UCONFIG_NO_FORMATTING
83