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Diffstat (limited to 'winsup/mingw/mingwex/gdtoa/README.mingw')
| -rw-r--r-- | winsup/mingw/mingwex/gdtoa/README.mingw | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/winsup/mingw/mingwex/gdtoa/README.mingw b/winsup/mingw/mingwex/gdtoa/README.mingw new file mode 100644 index 000000000..006cf8cbd --- /dev/null +++ b/winsup/mingw/mingwex/gdtoa/README.mingw @@ -0,0 +1,19 @@ +The gdtoa code here is based on David M. Gay's original +gdtoa source at http://www.netlib.org/fp/ from April 20, +2009. The major changes between the original source and +the mingw port here include: + +* IBM, CRAY and VAX code removed. +* KR_headers, ANSI, Void and Char ifdefs are removed. +* gdtoa symbols are prepended with "__". +* g_xfmt() uses __fpclassifyl() instead of interpreting + the flags bit-wise. +* lo0bits() and hi0bits() of misc.c replaced by wrappers + to gcc's __builtin_clz() +* The double/ulong union renamed from U to dbl_union + (grep'ped better..) +* A few compiler warning fixes here and there. +* A few other insignificant changes (if any..) + +MinGW specific compile-time definitions are at the top of +gdtoaimp.h and gdtoa.h headers. |