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2009-06-28 Ozkan Sezer <sezero@users.sourceforge.net>

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* mingwex/gdtoa/README.mingw mingwex/gdtoa/gdtoa_fltrnds.h: New files.
        * mingwex/gdtoa/README mingwex/gdtoa/dmisc.c mingwex/gdtoa/dtoa.c
        mingwex/gdtoa/g__fmt.c mingwex/gdtoa/g_dfmt.c mingwex/gdtoa/g_ffmt.c
        mingwex/gdtoa/g_xfmt.c mingwex/gdtoa/gd_arith.h mingwex/gdtoa/gd_qnan.h
        mingwex/gdtoa/gdtoa.c mingwex/gdtoa/gdtoa.h mingwex/gdtoa/gdtoaimp.h
        mingwex/gdtoa/gethex.c mingwex/gdtoa/gmisc.c mingwex/gdtoa/hd_init.c
        mingwex/gdtoa/hexnan.c mingwex/gdtoa/misc.c mingwex/gdtoa/qnan.c
        mingwex/gdtoa/smisc.c mingwex/gdtoa/strtodg.c mingwex/gdtoa/strtodnrp.c
        mingwex/gdtoa/strtof.c mingwex/gdtoa/strtopx.c mingwex/gdtoa/sum.c
        mingwex/gdtoa/ulp.c:  Update the gdtoa library to match the netlib.org
        sources as of Apr. 20, 2009.  Update further to match the sources in
        the mingw-w64 tree as of June 28, 2009, by removing IBM, CRAY and VAX
        code, removing KR_headers, ANSI, Void and Char ifdefs, renaming the
        double/ulong union from U to dbl_union for better grepping and white-
        space tidy-ups.
This commit is contained in:
Chris Sutcliffe
2009-07-12 22:44:37 +00:00
parent 62fb43a722
commit 15e114f5c5
28 changed files with 1345 additions and 1437 deletions
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39
winsup/mingw/mingwex/gdtoa/ulp.c
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@@ -31,40 +31,31 @@ THIS SOFTWARE.
#include "gdtoaimp.h"
double
ulp
#ifdef KR_headers
(x) double x;
#else
(double x)
#endif
double ulp (dbl_union *x)
{
Long L;
double a;
union _dbl_union a;
L = (word0(x) & Exp_mask) - (P-1)*Exp_msk1;
#ifndef Sudden_Underflow
if (L > 0) {
#endif
#ifdef IBM
L |= Exp_msk1 >> 4;
#endif
word0(a) = L;
word1(a) = 0;
word0(&a) = L;
word1(&a) = 0;
#ifndef Sudden_Underflow
}
}
else {
L = -L >> Exp_shift;
if (L < Exp_shift) {
word0(a) = 0x80000 >> L;
word1(a) = 0;
}
else {
word0(a) = 0;
L -= Exp_shift;
word1(a) = L >= 31 ? 1 : 1 << (31 - L);
}
word0(&a) = 0x80000 >> L;
word1(&a) = 0;
}
else {
word0(&a) = 0;
L -= Exp_shift;
word1(&a) = L >= 31 ? 1 : 1 << (31 - L);
}
#endif
return a;
}
#endif
return dval(&a);
}