83 lines
3.5 KiB
C++
83 lines
3.5 KiB
C++
// © 2018 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
//
|
|
// From the double-conversion library. Original license:
|
|
//
|
|
// Copyright 2010 the V8 project authors. All rights reserved.
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following
|
|
// disclaimer in the documentation and/or other materials provided
|
|
// with the distribution.
|
|
// * Neither the name of Google Inc. nor the names of its
|
|
// contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
// ICU PATCH: ifdef around UCONFIG_NO_FORMATTING
|
|
#include "unicode/utypes.h"
|
|
#if !UCONFIG_NO_FORMATTING
|
|
|
|
#ifndef DOUBLE_CONVERSION_STRTOD_H_
|
|
#define DOUBLE_CONVERSION_STRTOD_H_
|
|
|
|
// ICU PATCH: Customize header file paths for ICU.
|
|
|
|
#include "double-conversion-utils.h"
|
|
|
|
// ICU PATCH: Wrap in ICU namespace
|
|
U_NAMESPACE_BEGIN
|
|
|
|
namespace double_conversion {
|
|
|
|
// The buffer must only contain digits in the range [0-9]. It must not
|
|
// contain a dot or a sign. It must not start with '0', and must not be empty.
|
|
double Strtod(Vector<const char> buffer, int exponent);
|
|
|
|
// The buffer must only contain digits in the range [0-9]. It must not
|
|
// contain a dot or a sign. It must not start with '0', and must not be empty.
|
|
float Strtof(Vector<const char> buffer, int exponent);
|
|
|
|
// Same as Strtod, but assumes that 'trimmed' is already trimmed, as if run
|
|
// through TrimAndCut. That is, 'trimmed' must have no leading or trailing
|
|
// zeros, must not be a lone zero, and must not have 'too many' digits.
|
|
double StrtodTrimmed(Vector<const char> trimmed, int exponent);
|
|
|
|
// Same as Strtof, but assumes that 'trimmed' is already trimmed, as if run
|
|
// through TrimAndCut. That is, 'trimmed' must have no leading or trailing
|
|
// zeros, must not be a lone zero, and must not have 'too many' digits.
|
|
float StrtofTrimmed(Vector<const char> trimmed, int exponent);
|
|
|
|
inline Vector<const char> TrimTrailingZeros(Vector<const char> buffer) {
|
|
for (int i = buffer.length() - 1; i >= 0; --i) {
|
|
if (buffer[i] != '0') {
|
|
return buffer.SubVector(0, i + 1);
|
|
}
|
|
}
|
|
return Vector<const char>(buffer.start(), 0);
|
|
}
|
|
|
|
} // namespace double_conversion
|
|
|
|
// ICU PATCH: Close ICU namespace
|
|
U_NAMESPACE_END
|
|
|
|
#endif // DOUBLE_CONVERSION_STRTOD_H_
|
|
#endif // ICU PATCH: close #if !UCONFIG_NO_FORMATTING
|