Add implementations of wscanf() and related functions: fwscanf(), swscanf(),

vfwscanf(), vswscanf(), vwscanf(). As the name suggests, these are wide-
character versions of the scanf() family of functions.

1 files changed, 748 insertions, 0 deletions

diff --git a/lib/libc/stdio/vfwscanf.c b/lib/libc/stdio/vfwscanf.c
new file mode 100644
index 0000000..7c56ebe
--- /dev/null
+++ b/lib/libc/stdio/vfwscanf.c
@@ -0,0 +1,748 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <sys/cdefs.h>
+#if 0
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)vfscanf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+__FBSDID("FreeBSD: src/lib/libc/stdio/vfscanf.c,v 1.24 2002/08/13 09:30:41 tjr Exp ");
+#endif
+__FBSDID("$FreeBSD$");
+
+#include "namespace.h"
+#include <ctype.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdarg.h>
+#include <string.h>
+#include <wchar.h>
+#include <wctype.h>
+#include "un-namespace.h"
+
+#include "libc_private.h"
+#include "local.h"
+
+#define FLOATING_POINT
+
+#ifdef FLOATING_POINT
+#include <locale.h>
+#include "floatio.h"
+#endif
+
+#define	BUF		513	/* Maximum length of numeric string. */
+
+/*
+ * Flags used during conversion.
+ */
+#define	LONG		0x01	/* l: long or double */
+#define	LONGDBL		0x02	/* L: long double */
+#define	SHORT		0x04	/* h: short */
+#define	SUPPRESS	0x08	/* *: suppress assignment */
+#define	POINTER		0x10	/* p: void * (as hex) */
+#define	NOSKIP		0x20	/* [ or c: do not skip blanks */
+#define	LONGLONG	0x400	/* ll: long long (+ deprecated q: quad) */
+#define	INTMAXT		0x800	/* j: intmax_t */
+#define	PTRDIFFT	0x1000	/* t: ptrdiff_t */
+#define	SIZET		0x2000	/* z: size_t */
+#define	SHORTSHORT	0x4000	/* hh: char */
+#define	UNSIGNED	0x8000	/* %[oupxX] conversions */
+
+/*
+ * The following are used in numeric conversions only:
+ * SIGNOK, NDIGITS, DPTOK, and EXPOK are for floating point;
+ * SIGNOK, NDIGITS, PFXOK, and NZDIGITS are for integral.
+ */
+#define	SIGNOK		0x40	/* +/- is (still) legal */
+#define	NDIGITS		0x80	/* no digits detected */
+
+#define	DPTOK		0x100	/* (float) decimal point is still legal */
+#define	EXPOK		0x200	/* (float) exponent (e+3, etc) still legal */
+
+#define	PFXOK		0x100	/* 0x prefix is (still) legal */
+#define	NZDIGITS	0x200	/* no zero digits detected */
+
+/*
+ * Conversion types.
+ */
+#define	CT_CHAR		0	/* %c conversion */
+#define	CT_CCL		1	/* %[...] conversion */
+#define	CT_STRING	2	/* %s conversion */
+#define	CT_INT		3	/* %[dioupxX] conversion */
+#define	CT_FLOAT	4	/* %[efgEFG] conversion */
+
+#define	INCCL(_c)	\
+	(cclcompl ? (wmemchr(ccls, (_c), ccle - ccls) == NULL) : \
+	(wmemchr(ccls, (_c), ccle - ccls) != NULL))
+
+/*
+ * MT-safe version.
+ */
+int
+vfwscanf(FILE * __restrict fp, const wchar_t * __restrict fmt, va_list ap)
+{
+	int ret;
+
+	FLOCKFILE(fp);
+	ORIENT(fp, 1);
+	ret = __vfwscanf(fp, fmt, ap);
+	FUNLOCKFILE(fp);
+	return (ret);
+}
+
+/*
+ * Non-MT-safe version.
+ */
+int
+__vfwscanf(FILE * __restrict fp, const wchar_t * __restrict fmt, va_list ap)
+{
+	wint_t c;		/* character from format, or conversion */
+	size_t width;		/* field width, or 0 */
+	wchar_t *p;		/* points into all kinds of strings */
+	int n;			/* handy integer */
+	int flags;		/* flags as defined above */
+	wchar_t *p0;		/* saves original value of p when necessary */
+	int nassigned;		/* number of fields assigned */
+	int nconversions;	/* number of conversions */
+	int nread;		/* number of characters consumed from fp */
+	int base;		/* base argument to conversion function */
+	wchar_t buf[BUF];	/* buffer for numeric conversions */
+	const wchar_t *ccls;	/* character class start */
+	const wchar_t *ccle;	/* character class end */
+	int cclcompl;		/* ccl is complemented? */
+	wint_t wi;		/* handy wint_t */
+	char *mbp;		/* multibyte string pointer for %c %s %[ */
+	size_t nconv;		/* number of bytes in mb. conversion */
+	mbstate_t mbs;		/* multibyte state */
+
+	/* `basefix' is used to avoid `if' tests in the integer scanner */
+	static short basefix[17] =
+		{ 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
+#ifdef FLOATING_POINT
+	char decimal_point = localeconv()->decimal_point[0];
+#endif
+
+	nassigned = 0;
+	nconversions = 0;
+	nread = 0;
+	ccls = ccle = NULL;
+	for (;;) {
+		c = *fmt++;
+		if (c == 0)
+			return (nassigned);
+		if (iswspace(c)) {
+			while ((c = __fgetwc(fp)) != WEOF &&
+			    iswspace(c))
+				;
+			if (c != WEOF)
+				__ungetwc(c, fp);
+			continue;
+		}
+		if (c != '%')
+			goto literal;
+		width = 0;
+		flags = 0;
+		/*
+		 * switch on the format.  continue if done;
+		 * break once format type is derived.
+		 */
+again:		c = *fmt++;
+		switch (c) {
+		case '%':
+literal:
+			if ((wi = __fgetwc(fp)) == WEOF)
+				goto input_failure;
+			if (wi != c) {
+				__ungetwc(wi, fp);
+				goto input_failure;
+			}
+			nread++;
+			continue;
+
+		case '*':
+			flags |= SUPPRESS;
+			goto again;
+		case 'j':
+			flags |= INTMAXT;
+			goto again;
+		case 'l':
+			if (flags & LONG) {
+				flags &= ~LONG;
+				flags |= LONGLONG;
+			} else
+				flags |= LONG;
+			goto again;
+		case 'q':
+			flags |= LONGLONG;	/* not quite */
+			goto again;
+		case 't':
+			flags |= PTRDIFFT;
+			goto again;
+		case 'z':
+			flags |= SIZET;
+			goto again;
+		case 'L':
+			flags |= LONGDBL;
+			goto again;
+		case 'h':
+			if (flags & SHORT) {
+				flags &= ~SHORT;
+				flags |= SHORTSHORT;
+			} else
+				flags |= SHORT;
+			goto again;
+
+		case '0': case '1': case '2': case '3': case '4':
+		case '5': case '6': case '7': case '8': case '9':
+			width = width * 10 + c - '0';
+			goto again;
+
+		/*
+		 * Conversions.
+		 */
+		case 'd':
+			c = CT_INT;
+			base = 10;
+			break;
+
+		case 'i':
+			c = CT_INT;
+			base = 0;
+			break;
+
+		case 'o':
+			c = CT_INT;
+			flags |= UNSIGNED;
+			base = 8;
+			break;
+
+		case 'u':
+			c = CT_INT;
+			flags |= UNSIGNED;
+			base = 10;
+			break;
+
+		case 'X':
+		case 'x':
+			flags |= PFXOK;	/* enable 0x prefixing */
+			c = CT_INT;
+			flags |= UNSIGNED;
+			base = 16;
+			break;
+
+#ifdef FLOATING_POINT
+		case 'E': case 'F': case 'G':
+		case 'e': case 'f': case 'g':
+			c = CT_FLOAT;
+			break;
+#endif
+
+		case 'S':
+			flags |= LONG;
+			/* FALLTHROUGH */
+		case 's':
+			c = CT_STRING;
+			break;
+
+		case '[':
+			ccls = fmt;
+			if (*fmt == '^') {
+				cclcompl = 1;
+				fmt++;
+			} else
+				cclcompl = 0;
+			if (*fmt == ']')
+				fmt++;
+			while (*fmt != '\0' && *fmt != ']')
+				fmt++;
+			ccle = fmt;
+			fmt++;
+			flags |= NOSKIP;
+			c = CT_CCL;
+			break;
+
+		case 'C':
+			flags |= LONG;
+			/* FALLTHROUGH */
+		case 'c':
+			flags |= NOSKIP;
+			c = CT_CHAR;
+			break;
+
+		case 'p':	/* pointer format is like hex */
+			flags |= POINTER | PFXOK;
+			c = CT_INT;		/* assumes sizeof(uintmax_t) */
+			flags |= UNSIGNED;	/*      >= sizeof(uintptr_t) */
+			base = 16;
+			break;
+
+		case 'n':
+			nconversions++;
+			if (flags & SUPPRESS)	/* ??? */
+				continue;
+			if (flags & SHORTSHORT)
+				*va_arg(ap, char *) = nread;
+			else if (flags & SHORT)
+				*va_arg(ap, short *) = nread;
+			else if (flags & LONG)
+				*va_arg(ap, long *) = nread;
+			else if (flags & LONGLONG)
+				*va_arg(ap, long long *) = nread;
+			else if (flags & INTMAXT)
+				*va_arg(ap, intmax_t *) = nread;
+			else if (flags & SIZET)
+				*va_arg(ap, size_t *) = nread;
+			else if (flags & PTRDIFFT)
+				*va_arg(ap, ptrdiff_t *) = nread;
+			else
+				*va_arg(ap, int *) = nread;
+			continue;
+
+		default:
+			goto match_failure;
+
+		/*
+		 * Disgusting backwards compatibility hack.	XXX
+		 */
+		case '\0':	/* compat */
+			return (EOF);
+		}
+
+		/*
+		 * We have a conversion that requires input.
+		 */
+		if (fp->_r <= 0 && __srefill(fp))
+			goto input_failure;
+
+		/*
+		 * Consume leading white space, except for formats
+		 * that suppress this.
+		 */
+		if ((flags & NOSKIP) == 0) {
+			while ((wi = __fgetwc(fp)) != WEOF && iswspace(wi))
+				nread++;
+			if (wi == WEOF)
+				goto input_failure;
+			__ungetwc(wi, fp);
+		}
+
+		/*
+		 * Do the conversion.
+		 */
+		switch (c) {
+
+		case CT_CHAR:
+			/* scan arbitrary characters (sets NOSKIP) */
+			if (width == 0)
+				width = 1;
+			if (flags & SUPPRESS) {
+				while (width-- != 0 &&
+				    (wi = __fgetwc(fp)) != WEOF)
+					nread++;
+			} else if (flags & LONG) {
+				p = va_arg(ap, wchar_t *);
+				n = 0;
+				while (width-- != 0 &&
+				    (wi = __fgetwc(fp)) != WEOF) {
+					*p++ = (wchar_t)wi;
+					n++;
+				}
+				if (n == 0)
+					goto input_failure;
+				nread += n;
+				nassigned++;
+			} else {
+				mbp = va_arg(ap, char *);
+				n = 0;
+				memset(&mbs, 0, sizeof(mbs));
+				while (width-- != 0 &&
+				    (wi = __fgetwc(fp)) != WEOF) {
+					nconv = wcrtomb(mbp, wi, &mbs);
+					if (nconv == (size_t)-1)
+						goto input_failure;
+					mbp += nconv;
+					n++;
+				}
+				if (n == 0)
+					goto input_failure;
+				nread += n;
+				nassigned++;
+			}
+			nconversions++;
+			break;
+
+		case CT_CCL:
+			/* scan a (nonempty) character class (sets NOSKIP) */
+			if (width == 0)
+				width = (size_t)~0;	/* `infinity' */
+			/* take only those things in the class */
+			if (flags & SUPPRESS) {
+				n = 0;
+				while ((wi = __fgetwc(fp)) != WEOF &&
+				    width-- != 0 && INCCL(wi))
+					n++;
+				if (wi != WEOF)
+					__ungetwc(wi, fp);
+				if (n == 0)
+					goto match_failure;
+			} else if (flags & LONG) {
+				p0 = p = va_arg(ap, wchar_t *);
+				while ((wi = __fgetwc(fp)) != WEOF &&
+				    width-- != 0 && INCCL(wi))
+					*p++ = (wchar_t)wi;
+				if (wi != WEOF)
+					__ungetwc(wi, fp);
+				n = p - p0;
+				if (n == 0)
+					goto match_failure;
+				*p = 0;
+				nassigned++;
+			} else {
+				mbp = va_arg(ap, char *);
+				n = 0;
+				memset(&mbs, 0, sizeof(mbs));
+				while ((wi = __fgetwc(fp)) != WEOF &&
+				    width-- != 0 && INCCL(wi)) {
+					nconv = wcrtomb(mbp, wi, &mbs);
+					if (nconv == (size_t)-1)
+						goto input_failure;
+					mbp += nconv;
+					n++;
+				}
+				if (wi != WEOF)
+					__ungetwc(wi, fp);
+				*mbp = 0;
+				nassigned++;
+			}
+			nread += n;
+			nconversions++;
+			break;
+
+		case CT_STRING:
+			/* like CCL, but zero-length string OK, & no NOSKIP */
+			if (width == 0)
+				width = (size_t)~0;
+			if (flags & SUPPRESS) {
+				while ((wi = __fgetwc(fp)) != WEOF &&
+				    width-- != 0 &&
+				    !iswspace(wi))
+					nread++;
+				if (wi != WEOF)
+					__ungetwc(wi, fp);
+			} else if (flags & LONG) {
+				p0 = p = va_arg(ap, wchar_t *);
+				while ((wi = __fgetwc(fp)) != WEOF &&
+				    width-- != 0 &&
+				    !iswspace(wi)) {
+					*p++ = (wchar_t)wi;
+					nread++;
+				}
+				if (wi != WEOF)
+					__ungetwc(wi, fp);
+				*p = '\0';
+				nassigned++;
+			} else {
+				mbp = va_arg(ap, char *);
+				memset(&mbs, 0, sizeof(mbs));
+				while ((wi = __fgetwc(fp)) != WEOF &&
+				    width-- != 0 &&
+				    !iswspace(wi)) {
+					nconv = wcrtomb(mbp, wi, &mbs);
+					if (nconv == (size_t)-1)
+						goto input_failure;
+					mbp += nconv;
+					nread++;
+				}
+				if (wi != WEOF)
+					__ungetwc(wi, fp);
+				*mbp = 0;
+				nassigned++;
+			}
+			nconversions++;
+			continue;
+
+		case CT_INT:
+			/* scan an integer as if by the conversion function */
+#ifdef hardway
+			if (width == 0 || width > sizeof(buf) - 1)
+				width = sizeof(buf) - 1;
+#else
+			/* size_t is unsigned, hence this optimisation */
+			if (--width > sizeof(buf) - 2)
+				width = sizeof(buf) - 2;
+			width++;
+#endif
+			flags |= SIGNOK | NDIGITS | NZDIGITS;
+			for (p = buf; width; width--) {
+				c = __fgetwc(fp);
+				/*
+				 * Switch on the character; `goto ok'
+				 * if we accept it as a part of number.
+				 */
+				switch (c) {
+
+				/*
+				 * The digit 0 is always legal, but is
+				 * special.  For %i conversions, if no
+				 * digits (zero or nonzero) have been
+				 * scanned (only signs), we will have
+				 * base==0.  In that case, we should set
+				 * it to 8 and enable 0x prefixing.
+				 * Also, if we have not scanned zero digits
+				 * before this, do not turn off prefixing
+				 * (someone else will turn it off if we
+				 * have scanned any nonzero digits).
+				 */
+				case '0':
+					if (base == 0) {
+						base = 8;
+						flags |= PFXOK;
+					}
+					if (flags & NZDIGITS)
+					    flags &= ~(SIGNOK|NZDIGITS|NDIGITS);
+					else
+					    flags &= ~(SIGNOK|PFXOK|NDIGITS);
+					goto ok;
+
+				/* 1 through 7 always legal */
+				case '1': case '2': case '3':
+				case '4': case '5': case '6': case '7':
+					base = basefix[base];
+					flags &= ~(SIGNOK | PFXOK | NDIGITS);
+					goto ok;
+
+				/* digits 8 and 9 ok iff decimal or hex */
+				case '8': case '9':
+					base = basefix[base];
+					if (base <= 8)
+						break;	/* not legal here */
+					flags &= ~(SIGNOK | PFXOK | NDIGITS);
+					goto ok;
+
+				/* letters ok iff hex */
+				case 'A': case 'B': case 'C':
+				case 'D': case 'E': case 'F':
+				case 'a': case 'b': case 'c':
+				case 'd': case 'e': case 'f':
+					/* no need to fix base here */
+					if (base <= 10)
+						break;	/* not legal here */
+					flags &= ~(SIGNOK | PFXOK | NDIGITS);
+					goto ok;
+
+				/* sign ok only as first character */
+				case '+': case '-':
+					if (flags & SIGNOK) {
+						flags &= ~SIGNOK;
+						goto ok;
+					}
+					break;
+
+				/* x ok iff flag still set & 2nd char */
+				case 'x': case 'X':
+					if (flags & PFXOK && p == buf + 1) {
+						base = 16;	/* if %i */
+						flags &= ~PFXOK;
+						goto ok;
+					}
+					break;
+				}
+
+				/*
+				 * If we got here, c is not a legal character
+				 * for a number.  Stop accumulating digits.
+				 */
+				if (c != WEOF)
+					__ungetwc(c, fp);
+				break;
+		ok:
+				/*
+				 * c is legal: store it and look at the next.
+				 */
+				*p++ = (wchar_t)c;
+			}
+			/*
+			 * If we had only a sign, it is no good; push
+			 * back the sign.  If the number ends in `x',
+			 * it was [sign] '0' 'x', so push back the x
+			 * and treat it as [sign] '0'.
+			 */
+			if (flags & NDIGITS) {
+				if (p > buf)
+					__ungetwc(*--p, fp);
+				goto match_failure;
+			}
+			c = p[-1];
+			if (c == 'x' || c == 'X') {
+				--p;
+				__ungetwc(c, fp);
+			}
+			if ((flags & SUPPRESS) == 0) {
+				uintmax_t res;
+
+				*p = 0;
+				if ((flags & UNSIGNED) == 0)
+				    res = wcstoimax(buf, NULL, base);
+				else
+				    res = wcstoumax(buf, NULL, base);
+				if (flags & POINTER)
+					*va_arg(ap, void **) =
+							(void *)(uintptr_t)res;
+				else if (flags & SHORTSHORT)
+					*va_arg(ap, char *) = res;
+				else if (flags & SHORT)
+					*va_arg(ap, short *) = res;
+				else if (flags & LONG)
+					*va_arg(ap, long *) = res;
+				else if (flags & LONGLONG)
+					*va_arg(ap, long long *) = res;
+				else if (flags & INTMAXT)
+					*va_arg(ap, intmax_t *) = res;
+				else if (flags & PTRDIFFT)
+					*va_arg(ap, ptrdiff_t *) = res;
+				else if (flags & SIZET)
+					*va_arg(ap, size_t *) = res;
+				else
+					*va_arg(ap, int *) = res;
+				nassigned++;
+			}
+			nread += p - buf;
+			nconversions++;
+			break;
+
+#ifdef FLOATING_POINT
+		case CT_FLOAT:
+			/* scan a floating point number as if by strtod */
+#ifdef hardway
+			if (width == 0 || width > sizeof(buf) - 1)
+				width = sizeof(buf) - 1;
+#else
+			/* size_t is unsigned, hence this optimisation */
+			if (--width > sizeof(buf) - 2)
+				width = sizeof(buf) - 2;
+			width++;
+#endif
+			flags |= SIGNOK | NDIGITS | DPTOK | EXPOK;
+			for (p = buf; width; width--) {
+				c = __fgetwc(fp);
+				/*
+				 * This code mimicks the integer conversion
+				 * code, but is much simpler.
+				 */
+				switch (c) {
+
+				case '0': case '1': case '2': case '3':
+				case '4': case '5': case '6': case '7':
+				case '8': case '9':
+					flags &= ~(SIGNOK | NDIGITS);
+					goto fok;
+
+				case '+': case '-':
+					if (flags & SIGNOK) {
+						flags &= ~SIGNOK;
+						goto fok;
+					}
+					break;
+				case 'e': case 'E':
+					/* no exponent without some digits */
+					if ((flags&(NDIGITS|EXPOK)) == EXPOK) {
+						flags =
+						    (flags & ~(EXPOK|DPTOK)) |
+						    SIGNOK | NDIGITS;
+						goto fok;
+					}
+					break;
+				default:
+					if (c == (wchar_t)decimal_point &&
+					    (flags & DPTOK)) {
+						flags &= ~(SIGNOK | DPTOK);
+						goto fok;
+					}
+					break;
+				}
+				if (c != WEOF)
+					__ungetwc(c, fp);
+				break;
+		fok:
+				*p++ = c;
+			}
+			/*
+			 * If no digits, might be missing exponent digits
+			 * (just give back the exponent) or might be missing
+			 * regular digits, but had sign and/or decimal point.
+			 */
+			if (flags & NDIGITS) {
+				if (flags & EXPOK) {
+					/* no digits at all */
+					while (p > buf)
+						__ungetwc(*--p, fp);
+					goto match_failure;
+				}
+				/* just a bad exponent (e and maybe sign) */
+				c = *--p;
+				if (c != 'e' && c != 'E') {
+					__ungetwc(c, fp);/* sign */
+					c = *--p;
+				}
+				__ungetwc(c, fp);
+			}
+			if ((flags & SUPPRESS) == 0) {
+				double res;
+
+				*p = 0;
+				/* XXX this loses precision for long doubles. */
+				res = wcstod(buf, NULL);
+				if (flags & LONGDBL)
+					*va_arg(ap, long double *) = res;
+				else if (flags & LONG)
+					*va_arg(ap, double *) = res;
+				else
+					*va_arg(ap, float *) = res;
+				nassigned++;
+			}
+			nread += p - buf;
+			nconversions++;
+			break;
+#endif /* FLOATING_POINT */
+		}
+	}
+input_failure:
+	return (nconversions != 0 ? nassigned : EOF);
+match_failure:
+	return (nassigned);
+}