| // 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_FIXED_DTOA_H_ |
| #define V8_FIXED_DTOA_H_ |
| |
| namespace v8 { |
| namespace internal { |
| |
| // Produces digits necessary to print a given number with |
| // 'fractional_count' digits after the decimal point. |
| // The buffer must be big enough to hold the result plus one terminating null |
| // character. |
| // |
| // The produced digits might be too short in which case the caller has to fill |
| // the gaps with '0's. |
| // Example: FastFixedDtoa(0.001, 5, ...) is allowed to return buffer = "1", and |
| // decimal_point = -2. |
| // Halfway cases are rounded towards +/-Infinity (away from 0). The call |
| // FastFixedDtoa(0.15, 2, ...) thus returns buffer = "2", decimal_point = 0. |
| // The returned buffer may contain digits that would be truncated from the |
| // shortest representation of the input. |
| // |
| // This method only works for some parameters. If it can't handle the input it |
| // returns false. The output is null-terminated when the function succeeds. |
| bool FastFixedDtoa(double v, int fractional_count, |
| Vector<char> buffer, int* length, int* decimal_point); |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_FIXED_DTOA_H_ |
