// 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. #ifndef V8_FAST_DTOA_H_ #define V8_FAST_DTOA_H_ namespace v8 { namespace internal { // FastDtoa will produce at most kFastDtoaMaximalLength digits. This does not // include the terminating '\0' character. static const int kFastDtoaMaximalLength = 17; // Provides a decimal representation of v. // v must not be (positive or negative) zero and it must not be Infinity or NaN. // Returns true if it succeeds, otherwise the result can not be trusted. // There will be *length digits inside the buffer followed by a null terminator. // If the function returns true then // v == (double) (buffer * 10^(point - length)). // The digits in the buffer are the shortest representation possible: no // 0.099999999999 instead of 0.1. // The last digit will be closest to the actual v. That is, even if several // digits might correctly yield 'v' when read again, the buffer will contain the // one closest to v. // The variable 'sign' will be '0' if the given number is positive, and '1' // otherwise. bool FastDtoa(double d, Vector buffer, int* sign, int* length, int* point); } } // namespace v8::internal #endif // V8_FAST_DTOA_H_