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 8 namespace v8 { 9 namespace 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. 27 bool 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
