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Unified Diff: src/dtoa.h

Issue 1968003: Revert r4591 (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 10 years, 8 months ago
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Index: src/dtoa.h
===================================================================
--- src/dtoa.h (revision 4591)
+++ src/dtoa.h (working copy)
@@ -1,81 +0,0 @@
-// 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_DTOA_H_
-#define V8_DTOA_H_
-
-namespace v8 {
-namespace internal {
-
-enum DtoaMode {
- // 0.9999999999999999 becomes 0.1
- DTOA_SHORTEST,
- // 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.
- DTOA_FIXED,
- // Fixed number of digits (independent of the decimal point).
- DTOA_PRECISION
-};
-
-// The maximal length of digits a double can have in base 10.
-// Note that DoubleToAscii null-terminates its input. So the given buffer should
-// be at least kBase10MaximalLength + 1 characters long.
-static const int kBase10MaximalLength = 17;
-
-// Converts the given double 'v' to ascii.
-// The result should be interpreted as buffer * 10^(point-length).
-//
-// 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 one farther away
-// from 0 is chosen (halfway cases - ending with 5 - are rounded 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 towards +/-Infinity (away from 0). The call
-// toFixed(0.15, 2) thus returns buffer="2", point=0.
-// The returned buffer may contain digits that would be truncated from the
-// shortest representation of the input.
-// - 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 away from 0.
-// 'DoubleToAscii' expects the given buffer to be big enough to hold all digits
-// and a terminating null-character.
-bool DoubleToAscii(double v, DtoaMode mode, int requested_digits,
- Vector<char> buffer, int* sign, int* length, int* point);
-
-} } // namespace v8::internal
-
-#endif // V8_DTOA_H_
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