sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 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 V8_FIXED_DTOA_H_ |
| 29 | #define V8_FIXED_DTOA_H_ |
| 30 | |
| 31 | namespace v8 { |
| 32 | namespace internal { |
| 33 | |
| 34 | // Produces digits necessary to print a given number with |
| 35 | // 'fractional_count' digits after the decimal point. |
| 36 | // The buffer must be big enough to hold the result plus one terminating null |
| 37 | // character. |
| 38 | // |
| 39 | // The produced digits might be too short in which case the caller has to fill |
| 40 | // the gaps with '0's. |
| 41 | // Example: FastFixedDtoa(0.001, 5, ...) is allowed to return buffer = "1", and |
| 42 | // decimal_point = -2. |
| 43 | // Halfway cases are rounded towards +/-Infinity (away from 0). The call |
| 44 | // FastFixedDtoa(0.15, 2, ...) thus returns buffer = "2", decimal_point = 0. |
| 45 | // The returned buffer may contain digits that would be truncated from the |
| 46 | // shortest representation of the input. |
| 47 | // |
| 48 | // This method only works for some parameters. If it can't handle the input it |
| 49 | // returns false. The output is null-terminated when the function succeeds. |
| 50 | bool FastFixedDtoa(double v, int fractional_count, |
| 51 | Vector<char> buffer, int* length, int* decimal_point); |
| 52 | |
| 53 | } } // namespace v8::internal |
| 54 | |
| 55 | #endif // V8_FIXED_DTOA_H_ |