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author | Ryan Dahl <ry@tinyclouds.org> | 2010-09-22 11:14:58 -0700 |
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committer | Ryan Dahl <ry@tinyclouds.org> | 2010-09-22 19:20:06 -0700 |
commit | 4df999f85f2cb7ac687d3281af012d9df9699657 (patch) | |
tree | febaced149ed8843bdbe3f3a8759fdf137c809ec /deps/v8/src/fast-dtoa.h | |
parent | 893ebe72305ea599c32c99e3ca4fda050ae7c983 (diff) | |
download | node-4df999f85f2cb7ac687d3281af012d9df9699657.tar.gz |
Revert "Upgrade V8 to 2.4.5"
This reverts commit e2274412488ab310decb8494ab41009342b3c2f6.
Build fails on mac
Diffstat (limited to 'deps/v8/src/fast-dtoa.h')
-rw-r--r-- | deps/v8/src/fast-dtoa.h | 47 |
1 files changed, 11 insertions, 36 deletions
diff --git a/deps/v8/src/fast-dtoa.h b/deps/v8/src/fast-dtoa.h index 94c22ecd7..4403a7502 100644 --- a/deps/v8/src/fast-dtoa.h +++ b/deps/v8/src/fast-dtoa.h @@ -31,52 +31,27 @@ namespace v8 { namespace internal { -enum FastDtoaMode { - // Computes the shortest representation of the given input. The returned - // result will be the most accurate number of this length. Longer - // representations might be more accurate. - FAST_DTOA_SHORTEST, - // Computes a representation where the precision (number of digits) is - // given as input. The precision is independent of the decimal point. - FAST_DTOA_PRECISION -}; - // FastDtoa will produce at most kFastDtoaMaximalLength digits. This does not // include the terminating '\0' character. static const int kFastDtoaMaximalLength = 17; // Provides a decimal representation of v. -// The result should be interpreted as buffer * 10^(point - length). -// -// Precondition: -// * v must be a strictly positive finite double. -// +// v must be a strictly positive finite double. // Returns true if it succeeds, otherwise the result can not be trusted. // There will be *length digits inside the buffer followed by a null terminator. -// If the function returns true and mode equals -// - FAST_DTOA_SHORTEST, then -// the parameter requested_digits is ignored. -// The result satisfies -// v == (double) (buffer * 10^(point - length)). -// The digits in the buffer are the shortest representation possible. E.g. -// if 0.099999999999 and 0.1 represent the same double then "1" is returned -// with point = 0. -// The last digit will be closest to the actual v. That is, even if several -// digits might correctly yield 'v' when read again, the buffer will contain -// the one closest to v. -// - FAST_DTOA_PRECISION, then -// the buffer contains requested_digits digits. -// the difference v - (buffer * 10^(point-length)) is closest to zero for -// all possible representations of requested_digits digits. -// If there are two values that are equally close, then FastDtoa returns -// false. -// For both modes the buffer must be large enough to hold the result. +// If the function returns true then +// v == (double) (buffer * 10^(point - length)). +// The digits in the buffer are the shortest representation possible: no +// 0.099999999999 instead of 0.1. +// The last digit will be closest to the actual v. That is, even if several +// digits might correctly yield 'v' when read again, the buffer will contain the +// one closest to v. +// The variable 'sign' will be '0' if the given number is positive, and '1' +// otherwise. bool FastDtoa(double d, - FastDtoaMode mode, - int requested_digits, Vector<char> buffer, int* length, - int* decimal_point); + int* point); } } // namespace v8::internal |