Import David Gay's gdtoa library.

	* mingwex/gdtoa: New directory.
	* mingwex/gdtoa/(arithchk.c, dmisc.c, dtoa.c, g__fmt.c, g_dfmt.c,
	g_ffmt.c, g_xfmt.c, gd_arith.h, gd_qnan.h, gdtoa.c, gdtoa.h,
	gdtoaimp.h, gethex.c, gmisc.c, hd_init.c, hexnan.c, misc.c, qnan.c,
	README, smisc.c, strtodg.c, strtodnrp.c, strtof.c, strtopx.c, sum.c,
	ulp.c): New files.
	* mingwex/(strtof.c, strtold.c, ldtoa.c): Remove files.
	* mingwex/math/(cephes-emath.c, cephes-emath.h): Remove files.
	* mingwex/mb_wc_common.h (get_cp_from_locale); Rename to get_codepage().
        * mingwex/(btowc.c, wctob.c, mbrtowc.c, wcrtomb.c): Adjust call to get_codepage().
	* mingwex/wcstold.c: Avoid using strtold internals.
	* mingwex/wcstof.c: Rewrite.
	* mingwex/Makefile.in (GDTOA_DISTFILES): Add to distribution.
	(GDTOA_OBJS): Add to library.
	(DISTFILES): Remove strtof.c strtold.c ldtoa.c cephes-emath.c cephes-emath.h.
	(STDLIB_OBJS): Remove.
	(STDLIB_STUB_OBJS): Remove strtof.o wcstof,o.
	(Q8_OBJS): Add wcstof.o wcstold.o.
	* include/stdlib.h (strtof): Remove inline definition.
	(wcstof): Likewise.
	* include/wchar.h (wcstof): Remove inline definition.

1 files changed, 87 insertions, 0 deletions

diff --git a/winsup/mingw/mingwex/gdtoa/strtodnrp.c b/winsup/mingw/mingwex/gdtoa/strtodnrp.c
new file mode 100755
index 000000000..ac81b2bbd
--- /dev/null
+++ b/winsup/mingw/mingwex/gdtoa/strtodnrp.c
@@ -0,0 +1,87 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 2004 by David M. Gay.
+All Rights Reserved
+Based on material in the rest of /netlib/fp/gdota.tar.gz,
+which is copyright (C) 1998, 2000 by Lucent Technologies.
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* This is a variant of strtod that works on Intel ia32 systems */
+/* with the default extended-precision arithmetic -- it does not */
+/* require setting the precision control to 53 bits.  */
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to ".").	*/
+
+#include "gdtoaimp.h"
+
+ double
+#ifdef KR_headers
+__strtod(s, sp) CONST char *s; char **sp;
+#else
+__strtod(CONST char *s, char **sp)
+#endif
+{
+	static FPI fpi = { 53, 1-1023-53+1, 2046-1023-53+1, 1, SI };
+	ULong bits[2];
+	Long exp;
+	int k;
+	union { ULong L[2]; double d; } u;
+
+	k = __strtodg(s, sp, &fpi, &exp, bits);
+	switch(k & STRTOG_Retmask) {
+	  case STRTOG_NoNumber:
+	  case STRTOG_Zero:
+		u.L[0] = u.L[1] = 0;
+		break;
+
+	  case STRTOG_Normal:
+		u.L[_1] = bits[0];
+		u.L[_0] = (bits[1] & ~0x100000) | ((exp + 0x3ff + 52) << 20);
+		break;
+
+	  case STRTOG_Denormal:
+		u.L[_1] = bits[0];
+		u.L[_0] = bits[1];
+		break;
+
+	  case STRTOG_Infinite:
+		u.L[_0] = 0x7ff00000;
+		u.L[_1] = 0;
+		break;
+
+	  case STRTOG_NaN:
+		u.L[0] = d_QNAN0;
+		u.L[1] = d_QNAN1;
+		break;
+
+	  case STRTOG_NaNbits:
+		u.L[_0] = 0x7ff00000 | bits[1];
+		u.L[_1] = bits[0];
+	  }
+	if (k & STRTOG_Neg)
+		u.L[_0] |= 0x80000000L;
+	return u.d;
+	}