1// Copyright 2010 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#ifndef DOUBLE_CONVERSION_FIXED_DTOA_H_ 29#define DOUBLE_CONVERSION_FIXED_DTOA_H_ 30 31#include "utils.h" 32 33namespace WTF { 34 35namespace double_conversion { 36 37 // Produces digits necessary to print a given number with 38 // 'fractional_count' digits after the decimal point. 39 // The buffer must be big enough to hold the result plus one terminating null 40 // character. 41 // 42 // The produced digits might be too short in which case the caller has to fill 43 // the gaps with '0's. 44 // Example: FastFixedDtoa(0.001, 5, ...) is allowed to return buffer = "1", and 45 // decimal_point = -2. 46 // Halfway cases are rounded towards +/-Infinity (away from 0). The call 47 // FastFixedDtoa(0.15, 2, ...) thus returns buffer = "2", decimal_point = 0. 48 // The returned buffer may contain digits that would be truncated from the 49 // shortest representation of the input. 50 // 51 // This method only works for some parameters. If it can't handle the input it 52 // returns false. The output is null-terminated when the function succeeds. 53 bool FastFixedDtoa(double v, int fractional_count, 54 Vector<char> buffer, int* length, int* decimal_point); 55 56} // namespace double_conversion 57 58} // namespace WTF 59 60#endif // DOUBLE_CONVERSION_FIXED_DTOA_H_ 61