Move Source/WTF/wtf to Source/wtf

Source/WTF/wtf/dtoa/bignum-dtoa.h

-// 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 DOUBLE_CONVERSION_BIGNUM_DTOA_H_
-#define DOUBLE_CONVERSION_BIGNUM_DTOA_H_
-
-#include "utils.h"
-
-namespace WTF {
-
-namespace double_conversion {
-    
-    enum BignumDtoaMode {
-        // Return the shortest correct representation.
-        // For example the output of 0.299999999999999988897 is (the less accurate but
-        // correct) 0.3.
-        BIGNUM_DTOA_SHORTEST,
-        // Return a fixed number of digits after the decimal point.
-        // For instance fixed(0.1, 4) becomes 0.1000
-        // If the input number is big, the output will be big.
-        BIGNUM_DTOA_FIXED,
-        // Return a fixed number of digits, no matter what the exponent is.
-        BIGNUM_DTOA_PRECISION
-    };
-    
-    // Converts the given double 'v' to ascii.
-    // The result should be interpreted as buffer * 10^(point-length).
-    // The buffer will be null-terminated.
-    //
-    // The input v must be > 0 and different from NaN, and Infinity.
-    //
-    // The output depends on the given mode:
-    //  - SHORTEST: produce the least amount of digits for which the internal
-    //   identity requirement is still satisfied. If the digits are printed
-    //   (together with the correct exponent) then reading this number will give
-    //   'v' again. The buffer will choose the representation that is closest to
-    //   'v'. If there are two at the same distance, than the number is round up.
-    //   In this mode the 'requested_digits' parameter is ignored.
-    //  - FIXED: produces digits necessary to print a given number with
-    //   'requested_digits' digits after the decimal point. The produced digits
-    //   might be too short in which case the caller has to fill the gaps with '0's.
-    //   Example: toFixed(0.001, 5) is allowed to return buffer="1", point=-2.
-    //   Halfway cases are rounded up. The call toFixed(0.15, 2) thus returns
-    //     buffer="2", point=0.
-    //   Note: the length of the returned buffer has no meaning wrt the significance
-    //   of its digits. That is, just because it contains '0's does not mean that
-    //   any other digit would not satisfy the internal identity requirement.
-    //  - PRECISION: produces 'requested_digits' where the first digit is not '0'.
-    //   Even though the length of produced digits usually equals
-    //   'requested_digits', the function is allowed to return fewer digits, in
-    //   which case the caller has to fill the missing digits with '0's.
-    //   Halfway cases are again rounded up.
-    // 'BignumDtoa' expects the given buffer to be big enough to hold all digits
-    // and a terminating null-character.
-    void BignumDtoa(double v, BignumDtoaMode mode, int requested_digits,
-                    Vector<char> buffer, int* length, int* point);
-    
-}  // namespace double_conversion
-
-} // namespace WTF
-
-#endif  // DOUBLE_CONVERSION_BIGNUM_DTOA_H_