Sha256: e1c916a635d3bbbcc1a02e4a92b8a48e148ac9471d59685c1552ddd17b789121
Contents?: true
Size: 1.58 KB
Versions: 7
Compression:
Stored size: 1.58 KB
Contents
This directory contains V8's fast dtoa conversion code. The V8 revision imported was: Repository Root: http://v8.googlecode.com/svn Repository UUID: ce2b1a6d-e550-0410-aec6-3dcde31c8c00 Revision: 5322 The function of interest, which is called by SpiderMonkey, is conversions.cc:DoubleToCString(). This is called from jsnum.cpp to provide a fast Number.toString(10) implementation. A great deal of code has been removed from the imported files. The remaining code is more or less the bare minimum required to support this function in a straightforward, standalone manner. Two related functions in V8 are DoubleToExponentialCString() and DoubleToPrecisionString(), which can be used to implement Number.toExponential() and Number.toPrecision(). They have not been imported; they both call dtoa() and so are unlikely to be noticeably faster than the existing SpiderMonkey equivalents. Another related function in V8 is DoubleToRadixCString(), which can be used to implement Number.toString(base), where base != 10. This has not been imported; it may well be faster than SpiderMonkey's implementation, but V8 generates its own definition of the modulo() function on Win64 and importing this would require also importing large chunks of the assembler, which is not worthwhile. Yet another related function in V8 is DoubleToFixedCString(), which can be used to implement Number.toFixed(). This has not been imported as it was measured as slower than SpiderMonkey's version. Comments preceded by the string "MOZ: " indicate places where the code has been changed significantly from the original code.
Version data entries
7 entries across 7 versions & 1 rubygems