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.
5 #ifndef V8_FIXED_DTOA_H_
6 #define V8_FIXED_DTOA_H_
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
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.
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);
30 } } // namespace v8::internal
32 #endif // V8_FIXED_DTOA_H_