2009-02-12 Corinna Vinschen <corinna@vinschen.de>

        * libc/include/wchar.h (_wcstod_r): Declare.
        (_wcstof_r): Declare.
        (wcstod): Declare.
        (wcstof): Declare.
        * libc/stdlib/Makefile.am (GENERAL_SOURCES): Add wcstod.c.
        (CHEWOUT_FILES): Add wcstod.def.
        * libc/stdlib/Makefile.in: Regenerate.
        * libc/stdlib/stdlib.tex: Add wcstod.
        * libc/stdlib/wcstod.c: New file.

1 files changed, 209 insertions, 0 deletions

diff --git a/newlib/libc/stdlib/wcstod.c b/newlib/libc/stdlib/wcstod.c
new file mode 100644
index 0000000..4034157
--- /dev/null
+++ b/newlib/libc/stdlib/wcstod.c
@@ -0,0 +1,209 @@
+/*
+FUNCTION
+        <<wcstod>>, <<wcstof>>---wide char string to double or float
+
+INDEX
+	wcstod
+INDEX
+	_wcstod_r
+INDEX
+	wcstof
+INDEX
+	_wcstof_r
+
+ANSI_SYNOPSIS
+        #include <stdlib.h>
+        double wcstod(const wchar_t *<[str]>, wchar_t **<[tail]>);
+        float wcstof(const wchar_t *<[str]>, wchar_t **<[tail]>);
+
+        double _wcstod_r(void *<[reent]>,
+                         const wchar_t *<[str]>, wchar_t **<[tail]>);
+        float _wcstof_r(void *<[reent]>,
+                         const wchar_t *<[str]>, wchar_t **<[tail]>);
+
+TRAD_SYNOPSIS
+        #include <stdlib.h>
+        double wcstod(<[str]>,<[tail]>)
+        wchar_t *<[str]>;
+        wchar_t **<[tail]>;
+
+        float wcstof(<[str]>,<[tail]>)
+        wchar_t *<[str]>;
+        wchar_t **<[tail]>;
+
+        double _wcstod_r(<[reent]>,<[str]>,<[tail]>)
+	wchar_t *<[reent]>;
+        wchar_t *<[str]>;
+        wchar_t **<[tail]>;
+
+        float _wcstof_r(<[reent]>,<[str]>,<[tail]>)
+	wchar_t *<[reent]>;
+        wchar_t *<[str]>;
+        wchar_t **<[tail]>;
+
+DESCRIPTION
+	The function <<wcstod>> parses the wide character string <[str]>,
+	producing a substring which can be converted to a double
+	value.  The substring converted is the longest initial
+	subsequence of <[str]>, beginning with the first
+	non-whitespace character, that has one of these formats:
+	.[+|-]<[digits]>[.[<[digits]>]][(e|E)[+|-]<[digits]>]
+	.[+|-].<[digits]>[(e|E)[+|-]<[digits]>]
+	.[+|-](i|I)(n|N)(f|F)[(i|I)(n|N)(i|I)(t|T)(y|Y)]
+	.[+|-](n|N)(a|A)(n|N)[<(>[<[hexdigits]>]<)>]
+	.[+|-]0(x|X)<[hexdigits]>[.[<[hexdigits]>]][(p|P)[+|-]<[digits]>]
+	.[+|-]0(x|X).<[hexdigits]>[(p|P)[+|-]<[digits]>]
+	The substring contains no characters if <[str]> is empty, consists
+	entirely of whitespace, or if the first non-whitespace
+	character is something other than <<+>>, <<->>, <<.>>, or a
+	digit, and cannot be parsed as infinity or NaN. If the platform
+	does not support NaN, then NaN is treated as an empty substring.
+	If the substring is empty, no conversion is done, and
+	the value of <[str]> is stored in <<*<[tail]>>>.  Otherwise,
+	the substring is converted, and a pointer to the final string
+	(which will contain at least the terminating null character of
+	<[str]>) is stored in <<*<[tail]>>>.  If you want no
+	assignment to <<*<[tail]>>>, pass a null pointer as <[tail]>.
+	<<wcstof>> is identical to <<wcstod>> except for its return type.
+
+	This implementation returns the nearest machine number to the
+	input decimal string.  Ties are broken by using the IEEE
+	round-even rule.  However, <<wcstof>> is currently subject to
+	double rounding errors.
+
+	The alternate functions <<_wcstod_r>> and <<_wcstof_r>:> are 
+	reentrant versions of <<wcstod>> and <<wcstof>>, respectively.
+	The extra argument <[reent]> is a pointer to a reentrancy structure.
+
+RETURNS
+	Return the converted substring value, if any.  If
+	no conversion could be performed, 0 is returned.  If the
+	correct value is out of the range of representable values,
+	plus or minus <<HUGE_VAL>> is returned, and <<ERANGE>> is
+	stored in errno. If the correct value would cause underflow, 0
+	is returned and <<ERANGE>> is stored in errno.
+
+Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
+<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
+*/
+
+/*-
+ * Copyright (c) 2002 Tim J. Robbins
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <_ansi.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <wchar.h>
+
+double
+_DEFUN (_wcstod_r, (ptr, nptr, endptr),
+	struct _reent *ptr _AND
+	_CONST wchar_t *nptr _AND
+	wchar_t **endptr)
+{
+        static const mbstate_t initial;
+        mbstate_t mbs;
+        double val;
+        char *buf, *end;
+        const wchar_t *wcp;
+        size_t len;
+
+        while (iswspace(*nptr))
+                nptr++;
+
+        /*
+         * Convert the supplied numeric wide char. string to multibyte.
+         *
+         * We could attempt to find the end of the numeric portion of the
+         * wide char. string to avoid converting unneeded characters but
+         * choose not to bother; optimising the uncommon case where
+         * the input string contains a lot of text after the number
+         * duplicates a lot of strtod()'s functionality and slows down the
+         * most common cases.
+         */
+        wcp = nptr;
+        mbs = initial;
+        if ((len = _wcsrtombs_r(ptr, NULL, &wcp, 0, &mbs)) == (size_t)-1) {
+                if (endptr != NULL)
+                        *endptr = (wchar_t *)nptr;
+                return (0.0);
+        }
+        if ((buf = _malloc_r(ptr, len + 1)) == NULL)
+                return (0.0);
+        mbs = initial;
+        _wcsrtombs_r(ptr, buf, &wcp, len + 1, &mbs);
+
+        /* Let strtod() do most of the work for us. */
+        val = _strtod_r(ptr, buf, &end);
+
+        /*
+         * We only know where the number ended in the _multibyte_
+         * representation of the string. If the caller wants to know
+         * where it ended, count multibyte characters to find the
+         * corresponding position in the wide char string.
+         */
+        if (endptr != NULL)
+                /* XXX Assume each wide char is one byte. */
+                *endptr = (wchar_t *)nptr + (end - buf);
+
+        _free_r(ptr, buf);
+
+        return (val);
+}
+
+float
+_DEFUN (_wcstof_r, (ptr, nptr, endptr),
+	struct _reent *ptr _AND
+	_CONST wchar_t *nptr _AND
+	wchar_t **endptr)
+{
+  double retval = _wcstod_r (ptr, nptr, endptr);
+  if (isnan (retval))
+    return nanf (NULL);
+  return (float)retval;
+}
+
+#ifndef NO_REENT
+
+double
+_DEFUN (wcstod, (nptr, endptr),
+	_CONST wchar_t *nptr _AND wchar_t **endptr)
+{
+  return _wcstod_r (_REENT, nptr, endptr);
+}
+
+float
+_DEFUN (wcstof, (nptr, endptr),
+	_CONST wchar_t *nptr _AND
+	wchar_t **endptr)
+{
+  double retval = _wcstod_r (_REENT, nptr, endptr);
+  if (isnan (retval))
+    return nanf (NULL);
+  return (float)retval;
+}
+
+#endif