1// Copyright 2010 the V8 project authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef V8_FIXED_DTOA_H_ 6#define V8_FIXED_DTOA_H_ 7 8namespace v8 { 9namespace internal { 10 11// Produces digits necessary to print a given number with 12// 'fractional_count' digits after the decimal point. 13// The buffer must be big enough to hold the result plus one terminating null 14// character. 15// 16// The produced digits might be too short in which case the caller has to fill 17// the gaps with '0's. 18// Example: FastFixedDtoa(0.001, 5, ...) is allowed to return buffer = "1", and 19// decimal_point = -2. 20// Halfway cases are rounded towards +/-Infinity (away from 0). The call 21// FastFixedDtoa(0.15, 2, ...) thus returns buffer = "2", decimal_point = 0. 22// The returned buffer may contain digits that would be truncated from the 23// shortest representation of the input. 24// 25// This method only works for some parameters. If it can't handle the input it 26// returns false. The output is null-terminated when the function succeeds. 27bool FastFixedDtoa(double v, int fractional_count, 28 Vector<char> buffer, int* length, int* decimal_point); 29 30} } // namespace v8::internal 31 32#endif // V8_FIXED_DTOA_H_ 33