1 /* snprintf - formatted output to strings, with bounds checking and allocation */
4 build a test version with
5 gcc -g -DDRIVER -I../.. -I../../include -o test-snprintf snprintf.c fmtu*long.o
9 Unix snprintf implementation.
10 derived from inetutils/libinetutils/snprintf.c Version 1.1
12 Copyright (C) 2001,2006 Free Software Foundation, Inc.
14 This file is part of GNU Bash, the Bourne Again SHell.
16 Bash is free software: you can redistribute it and/or modify
17 it under the terms of the GNU General Public License as published by
18 the Free Software Foundation, either version 3 of the License, or
19 (at your option) any later version.
21 Bash is distributed in the hope that it will be useful,
22 but WITHOUT ANY WARRANTY; without even the implied warranty of
23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 GNU General Public License for more details.
26 You should have received a copy of the GNU General Public License
27 along with Bash. If not, see <http://www.gnu.org/licenses/>.
32 * added changes from Miles Bader
33 * corrected a bug with %f
34 * added support for %#g
35 * added more comments :-)
37 * supporting must ANSI syntaxic_sugars
41 THANKS(for the patches and ideas):
50 * Currently doesn't handle (and bash/readline doesn't use):
51 * * *M$ width, precision specifications
52 * * %N$ numbered argument conversions
53 * * inf, nan floating values imperfect (if isinf(), isnan() not in libc)
54 * * support for `F' is imperfect with ldfallback(), since underlying
55 * printf may not handle it -- should ideally have another autoconf test
58 #define FLOATING_POINT
69 #if defined(DRIVER) && !defined(HAVE_CONFIG_H)
70 #define HAVE_LONG_LONG
71 #define HAVE_LONG_DOUBLE
73 #define HAVE_PRINTF_A_FORMAT
75 #define HAVE_ISINF_IN_LIBC
76 #define HAVE_ISNAN_IN_LIBC
78 #define HAVE_STRINGIZE
85 #if !defined (HAVE_SNPRINTF) || !defined (HAVE_ASPRINTF)
87 #include <bashtypes.h>
89 #if defined(PREFER_STDARG)
102 #include <chartypes.h>
108 #ifdef FLOATING_POINT
109 # include <float.h> /* for manifest constants */
110 # include <stdio.h> /* for sprintf */
120 #include <shmbutil.h>
125 # define FL_PREFIX 0x01 /* add 0x, 0X, or 0 prefix as appropriate */
126 # define FL_ADDBASE 0x02 /* add base# prefix to converted value */
127 # define FL_HEXUPPER 0x04 /* use uppercase when converting to hex */
128 # define FL_UNSIGNED 0x08 /* don't add any sign */
129 extern char *fmtulong __P((unsigned long int, int, char *, size_t, int));
130 extern char *fmtullong __P((unsigned long long int, int, char *, size_t, int));
134 # define FREE(x) if (x) free (x)
137 /* Bound on length of the string representing an integer value of type T.
138 Subtract one for the sign bit if T is signed;
139 302 / 1000 is log10 (2) rounded up;
140 add one for integer division truncation;
141 add one more for a minus sign if t is signed. */
142 #define INT_STRLEN_BOUND(t) \
143 ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 \
144 + 1 + TYPE_SIGNED (t))
146 /* conversion flags */
147 #define PF_ALTFORM 0x00001 /* # */
148 #define PF_HEXPREFIX 0x00002 /* 0[Xx] */
149 #define PF_LADJUST 0x00004 /* - */
150 #define PF_ZEROPAD 0x00008 /* 0 */
151 #define PF_PLUS 0x00010 /* + */
152 #define PF_SPACE 0x00020 /* ' ' */
153 #define PF_THOUSANDS 0x00040 /* ' */
155 #define PF_DOT 0x00080 /* `.precision' */
156 #define PF_STAR_P 0x00100 /* `*' after precision */
157 #define PF_STAR_W 0x00200 /* `*' before or without precision */
159 /* length modifiers */
160 #define PF_SIGNEDCHAR 0x00400 /* hh */
161 #define PF_SHORTINT 0x00800 /* h */
162 #define PF_LONGINT 0x01000 /* l */
163 #define PF_LONGLONG 0x02000 /* ll */
164 #define PF_LONGDBL 0x04000 /* L */
165 #define PF_INTMAX_T 0x08000 /* j */
166 #define PF_SIZE_T 0x10000 /* z */
167 #define PF_PTRDIFF_T 0x20000 /* t */
169 #define PF_ALLOCBUF 0x40000 /* for asprintf, vasprintf */
171 #define PFM_SN 0x01 /* snprintf, vsnprintf */
172 #define PFM_AS 0x02 /* asprintf, vasprintf */
174 #define ASBUFSIZE 128
176 #define x_digs "0123456789abcdef"
177 #define X_digs "0123456789ABCDEF"
179 static char intbuf[INT_STRLEN_BOUND(unsigned long) + 1];
183 static char *grouping;
186 * For the FLOATING POINT FORMAT :
187 * the challenge was finding a way to
188 * manipulate the Real numbers without having
189 * to resort to mathematical function(it
190 * would require to link with -lm) and not
191 * going down to the bit pattern(not portable)
193 * so a number, a real is:
195 real = integral + fraction
197 integral = ... + a(2)*10^2 + a(1)*10^1 + a(0)*10^0
198 fraction = b(1)*10^-1 + b(2)*10^-2 + ...
204 from then it was simple math
208 * size of the buffer for the integral part
209 * and the fraction part
211 #define MAX_INT 99 + 1 /* 1 for the null */
212 #define MAX_FRACT 307 + 1
215 * These functions use static buffers to store the results,
216 * and so are not reentrant
218 #define itoa(n) fmtulong(n, 10, intbuf, sizeof(intbuf), 0);
219 #define dtoa(n, p, f) numtoa(n, 10, p, f)
221 #define SWAP_INT(a,b) {int t; t = (a); (a) = (b); (b) = t;}
223 #define GETARG(type) (va_arg(args, type))
225 /* Macros that do proper sign extension and handle length modifiers. Used
226 for the integer conversion specifiers. */
227 #define GETSIGNED(p) \
228 (((p)->flags & PF_LONGINT) \
230 : (((p)->flags & PF_SHORTINT) ? (long)(short)GETARG (int) \
231 : (long)GETARG (int)))
233 #define GETUNSIGNED(p) \
234 (((p)->flags & PF_LONGINT) \
235 ? GETARG (unsigned long) \
236 : (((p)->flags & PF_SHORTINT) ? (unsigned long)(unsigned short)GETARG (int) \
237 : (unsigned long)GETARG (unsigned int)))
240 #ifdef HAVE_LONG_DOUBLE
241 #define GETLDOUBLE(p) GETARG (long double)
243 #define GETDOUBLE(p) GETARG (double)
245 #define SET_SIZE_FLAGS(p, type) \
246 if (sizeof (type) > sizeof (int)) \
247 (p)->flags |= PF_LONGINT; \
248 if (sizeof (type) > sizeof (long)) \
249 (p)->flags |= PF_LONGLONG;
251 /* this struct holds everything we need */
255 char *base; /* needed for [v]asprintf */
263 int width, precision;
267 /* the floating point stuff */
268 #ifdef FLOATING_POINT
269 static double pow_10 __P((int));
270 static int log_10 __P((double));
271 static double integral __P((double, double *));
272 static char *numtoa __P((double, int, int, char **));
275 static void init_data __P((struct DATA *, char *, size_t, const char *, int));
276 static void init_conv_flag __P((struct DATA *));
279 #ifdef FLOATING_POINT
280 static void floating __P((struct DATA *, double));
281 static void exponent __P((struct DATA *, double));
283 static void number __P((struct DATA *, unsigned long, int));
284 #ifdef HAVE_LONG_LONG
285 static void lnumber __P((struct DATA *, unsigned long long, int));
287 static void pointer __P((struct DATA *, unsigned long));
288 static void strings __P((struct DATA *, char *));
290 #ifdef FLOATING_POINT
291 # define FALLBACK_FMTSIZE 32
292 # define FALLBACK_BASE 4096
293 # define LFALLBACK_BASE 5120
294 # ifdef HAVE_LONG_DOUBLE
295 static void ldfallback __P((struct DATA *, const char *, const char *, long double));
297 static void dfallback __P((struct DATA *, const char *, const char *, double));
300 static char *groupnum __P((char *));
303 static void memory_error_and_abort ();
304 static void *xmalloc __P((size_t));
305 static void *xrealloc __P((void *, size_t));
306 static void xfree __P((void *));
308 # include <xmalloc.h>
311 /* those are defines specific to snprintf to hopefully
312 * make the code clearer :-)
320 /* round off to the precision */
321 #define ROUND(d, p) \
323 d - pow_10(-(p)->precision) * 0.5 : \
324 d + pow_10(-(p)->precision) * 0.5
326 /* set default precision */
327 #define DEF_PREC(p) \
328 if ((p)->precision == NOT_FOUND) \
331 /* put a char. increment the number of chars written even if we've exceeded
332 the vsnprintf/snprintf buffer size (for the return value) */
333 #define PUT_CHAR(c, p) \
336 if (((p)->flags & PF_ALLOCBUF) && ((p)->counter >= (p)->length - 1)) \
338 (p)->length += ASBUFSIZE; \
339 (p)->base = (char *)xrealloc((p)->base, (p)->length); \
340 (p)->holder = (p)->base + (p)->counter; /* in case reallocated */ \
342 if ((p)->counter < (p)->length) \
343 *(p)->holder++ = (c); \
348 /* Output a string. P->WIDTH has already been adjusted for padding. */
349 #define PUT_STRING(string, len, p) \
353 while ((len)-- > 0) \
355 PUT_CHAR (*(string), (p)); \
362 #define PUT_PLUS(d, p, zero) \
363 if ((d) > zero && (p)->justify == RIGHT) \
366 #define PUT_SPACE(d, p, zero) \
367 if (((p)->flags & PF_SPACE) && (d) > zero) \
371 #define PAD_RIGHT(p) \
372 if ((p)->width > 0 && (p)->justify != LEFT) \
373 for (; (p)->width > 0; (p)->width--) \
374 PUT_CHAR((p)->pad, p)
377 #define PAD_LEFT(p) \
378 if ((p)->width > 0 && (p)->justify == LEFT) \
379 for (; (p)->width > 0; (p)->width--) \
380 PUT_CHAR((p)->pad, p)
382 /* pad with zeros from decimal precision */
383 #define PAD_ZERO(p) \
384 if ((p)->precision > 0) \
385 for (; (p)->precision > 0; (p)->precision--) \
388 /* if width and prec. in the args */
389 #define STAR_ARGS(p) \
391 if ((p)->flags & PF_STAR_W) \
393 (p)->width = GETARG (int); \
394 if ((p)->width < 0) \
396 (p)->flags |= PF_LADJUST; \
397 (p)->justify = LEFT; \
398 (p)->width = -(p)->width; \
401 if ((p)->flags & PF_STAR_P) \
403 (p)->precision = GETARG (int); \
404 if ((p)->precision < 0) \
406 (p)->flags &= ~PF_STAR_P; \
407 (p)->precision = NOT_FOUND; \
412 #if defined (HAVE_LOCALE_H) && defined (HAVE_LOCALECONV)
413 # define GETLOCALEDATA(d, t, g) \
418 (d) = '.'; (t) = -1; (g) = 0; /* defaults */ \
422 if (lv->decimal_point && lv->decimal_point[0]) \
423 (d) = lv->decimal_point[0]; \
424 if (lv->thousands_sep && lv->thousands_sep[0]) \
425 (t) = lv->thousands_sep[0]; \
426 (g) = lv->grouping ? lv->grouping : ""; \
427 if (*(g) == '\0' || *(g) == CHAR_MAX || (t) == -1) (g) = 0; \
433 # define GETLOCALEDATA(d, t, g) \
434 ( (d) = '.', (t) = ',', g = "\003" )
437 #ifdef FLOATING_POINT
439 * Find the nth power of 10
447 /* handle common cases with fast switch statement. */
450 case -3: return .001;
456 case 3: return 1000.;
462 for (n += 4; n < 0; n++)
468 for (n -= 4; n > 0; n--)
476 * Find the integral part of the log in base 10
477 * Note: this not a real log10()
478 I just need and approximation(integerpart) of x in:
483 * NOTE: do not call this with r == 0 -- an infinite loop results.
516 * This function return the fraction part of a double
517 * and set in ip the integral part.
518 * In many ways it resemble the modf() found on most Un*x
527 double real_integral = 0.;
529 /* take care of the obvious */
530 /* equal to zero ? */
537 /* negative number ? */
548 /* the real work :-) */
549 for (j = log_10(real); j >= 0; j--)
552 s = (real - real_integral)/p;
556 real_integral += i*p;
559 return (real - real_integral);
562 #define PRECISION 1.e-6
564 * return an ascii representation of the integral part of the number
565 * and set fract to be an ascii representation of the fraction part
566 * the container for the fraction and the integral part or staticly
567 * declare with fix size
570 numtoa(number, base, precision, fract)
576 double ip, fp; /* integer and fraction part */
578 int digits = MAX_INT - 1;
579 static char integral_part[MAX_INT];
580 static char fraction_part[MAX_FRACT];
584 /* taking care of the obvious case: 0.0 */
587 integral_part[0] = '0';
588 integral_part[1] = '\0';
589 /* The fractional part has to take the precision into account */
590 for (ch = 0; ch < precision-1; ch++)
591 fraction_part[ch] = '0';
592 fraction_part[ch] = '0';
593 fraction_part[ch+1] = '\0';
595 *fract = fraction_part;
596 return integral_part;
599 /* for negative numbers */
600 if ((sign = number) < 0.)
603 digits--; /* sign consume one digit */
606 fraction = integral(number, &ip);
609 /* do the integral part */
612 integral_part[0] = '0';
617 for ( i = 0; i < digits && number != 0.; ++i)
620 fp = integral(number, &ip);
621 ch = (int)((fp + PRECISION)*base); /* force to round */
622 integral_part[i] = (ch <= 9) ? ch + '0' : ch + 'a' - 10;
623 if (! ISXDIGIT((unsigned char)integral_part[i]))
624 break; /* bail out overflow !! */
629 /* Oh No !! out of bound, ho well fill it up ! */
631 for (i = 0; i < digits; ++i)
632 integral_part[i] = '9';
636 integral_part[i++] = '-';
638 integral_part[i] = '\0';
640 /* reverse every thing */
641 for ( i--, j = 0; j < i; j++, i--)
642 SWAP_INT(integral_part[i], integral_part[j]);
644 /* the fractional part */
645 for (i=0, fp=fraction; precision > 0 && i < MAX_FRACT ; i++, precision--)
647 fraction_part[i] = (int)((fp + PRECISION)*10. + '0');
648 if (! DIGIT(fraction_part[i])) /* underflow ? */
650 fp = (fp*10.0) - (double)(long)((fp + PRECISION)*10.);
652 fraction_part[i] = '\0';
654 if (fract != (char **)0)
655 *fract = fraction_part;
657 return integral_part;
661 /* for %d and friends, it puts in holder
662 * the representation with the right padding
674 /* An explicit precision turns off the zero-padding flag. */
675 if ((p->flags & PF_ZEROPAD) && p->precision >= 0 && (p->flags & PF_DOT))
676 p->flags &= ~PF_ZEROPAD;
678 sd = d; /* signed for ' ' padding in base 10 */
680 flags = (*p->pf == 'x' || *p->pf == 'X' || *p->pf == 'o' || *p->pf == 'u' || *p->pf == 'U') ? FL_UNSIGNED : 0;
682 flags |= FL_HEXUPPER;
684 tmp = fmtulong (d, base, intbuf, sizeof(intbuf), flags);
686 if ((p->flags & PF_THOUSANDS))
688 GETLOCALEDATA(decpoint, thoussep, grouping);
689 if (grouping && (t = groupnum (tmp)))
693 p->width -= strlen(tmp);
696 if ((p->flags & PF_DOT) && p->precision > 0)
698 p->precision -= strlen(tmp);
709 if (p->flags & PF_ALTFORM)
713 if (p->flags & PF_ALTFORM)
731 #ifdef HAVE_LONG_LONG
733 * identical to number() but works for `long long'
738 unsigned long long d;
745 /* An explicit precision turns off the zero-padding flag. */
746 if ((p->flags & PF_ZEROPAD) && p->precision >= 0 && (p->flags & PF_DOT))
747 p->flags &= ~PF_ZEROPAD;
749 sd = d; /* signed for ' ' padding in base 10 */
750 flags = (*p->pf == 'x' || *p->pf == 'X' || *p->pf == 'o' || *p->pf == 'u' || *p->pf == 'U') ? FL_UNSIGNED : 0;
752 flags |= FL_HEXUPPER;
754 tmp = fmtullong (d, base, intbuf, sizeof(intbuf), flags);
756 if ((p->flags & PF_THOUSANDS))
758 GETLOCALEDATA(decpoint, thoussep, grouping);
759 if (grouping && (t = groupnum (tmp)))
763 p->width -= strlen(tmp);
766 if ((p->flags & PF_DOT) && p->precision > 0)
768 p->precision -= strlen(tmp);
779 if (p->flags & PF_ALTFORM)
783 if (p->flags & PF_ALTFORM)
809 tmp = fmtulong(d, 16, intbuf, sizeof(intbuf), 0);
810 p->width -= strlen(tmp);
813 /* prefix '0x' for pointers */
835 if (p->precision != NOT_FOUND) /* the smallest number */
836 len = (len < p->precision ? len : p->precision);
839 PUT_STRING (tmp, len, p);
843 /* %ls wide-character strings */
854 memset (&mbs, '\0', sizeof (mbstate_t));
855 ws = (const wchar_t *)tmp;
858 if (p->precision != NOT_FOUND)
860 os = (char *)xmalloc (p->precision + 1);
861 len = wcsrtombs (os, &ws, p->precision, &mbs);
865 len = wcsrtombs (NULL, &ws, 0, &mbs);
866 if (len != (size_t)-1)
868 memset (&mbs, '\0', sizeof (mbstate_t));
869 os = (char *)xmalloc (len + 1);
870 (void)wcsrtombs (os, &ws, len + 1, &mbs);
873 if (len == (size_t)-1)
875 /* invalid multibyte sequence; bail now. */
881 PUT_STRING (os, len, p);
894 lbuf = (char *)malloc (MB_CUR_MAX+1);
897 memset (&mbs, '\0', sizeof (mbstate_t));
898 len = wcrtomb (lbuf, wc, &mbs);
899 if (len == (size_t)-1)
900 /* conversion failed; bail now. */
904 PUT_STRING (l, len, p);
907 #endif /* HANDLE_MULTIBYTE */
909 #ifdef FLOATING_POINT
911 #ifndef HAVE_ISINF_IN_LIBC
912 /* Half-assed versions, since we don't want to link with libm. */
920 else if (d > DBL_MAX)
928 #ifndef HAVE_ISNAN_IN_LIBC
937 /* Check for [+-]infinity and NaN. If MODE == 1, we check for Infinity, else
938 (mode == 2) we check for NaN. This does the necessary printing. Returns
939 1 if Inf or Nan, 0 if not. */
941 chkinfnan(p, d, mode)
944 int mode; /* == 1 for inf, == 2 for nan */
950 i = (mode == 1) ? isinf(d) : isnan(d);
953 big = (mode == 1) ? "INF" : "NAN";
954 small = (mode == 1) ? "inf" : "nan";
956 tmp = (*p->pf == 'F' || *p->pf == 'G' || *p->pf == 'E') ? big : small;
970 /* %f %F %g %G floating point representation */
976 char *tmp, *tmp2, *t;
979 if (d != 0 && (chkinfnan(p, d, 1) || chkinfnan(p, d, 2)))
980 return; /* already printed nan or inf */
982 GETLOCALEDATA(decpoint, thoussep, grouping);
985 tmp = dtoa(d, p->precision, &tmp2);
987 if ((p->flags & PF_THOUSANDS) && grouping && (t = groupnum (tmp)))
990 if ((*p->pf == 'g' || *p->pf == 'G') && (p->flags & PF_ALTFORM) == 0)
992 /* smash the trailing zeros unless altform */
993 for (i = strlen(tmp2) - 1; i >= 0 && tmp2[i] == '0'; i--)
999 /* calculate the padding. 1 for the dot */
1000 p->width = p->width -
1001 ((d > 0. && p->justify == RIGHT) ? 1:0) -
1002 ((p->flags & PF_SPACE) ? 1:0) -
1003 strlen(tmp) - p->precision -
1004 ((p->precision != 0 || (p->flags & PF_ALTFORM)) ? 1 : 0); /* radix char */
1007 PUT_SPACE(d, p, 0.);
1011 PUT_CHAR(*tmp, p); /* the integral */
1016 if (p->precision != 0 || (p->flags & PF_ALTFORM))
1017 PUT_CHAR(decpoint, p); /* put the '.' */
1019 for (; *tmp2; tmp2++)
1020 PUT_CHAR(*tmp2, p); /* the fraction */
1025 /* %e %E %g %G exponent representation */
1034 if (d != 0 && (chkinfnan(p, d, 1) || chkinfnan(p, d, 2)))
1035 return; /* already printed nan or inf */
1037 GETLOCALEDATA(decpoint, thoussep, grouping);
1044 d = d / pow_10(j); /* get the Mantissa */
1047 tmp = dtoa(d, p->precision, &tmp2);
1049 /* 1 for unit, 1 for the '.', 1 for 'e|E',
1050 * 1 for '+|-', 2 for 'exp' */
1051 /* calculate how much padding need */
1052 p->width = p->width -
1053 ((d > 0. && p->justify == RIGHT) ? 1:0) -
1054 ((p->flags & PF_SPACE) ? 1:0) - p->precision - 6;
1058 PUT_SPACE(d, p, 0.);
1066 if (p->precision != 0 || (p->flags & PF_ALTFORM))
1067 PUT_CHAR(decpoint, p); /* the '.' */
1069 if ((*p->pf == 'g' || *p->pf == 'G') && (p->flags & PF_ALTFORM) == 0)
1070 /* smash the trailing zeros unless altform */
1071 for (i = strlen(tmp2) - 1; i >= 0 && tmp2[i] == '0'; i--)
1074 for (; *tmp2; tmp2++)
1075 PUT_CHAR(*tmp2, p); /* the fraction */
1077 /* the exponent put the 'e|E' */
1078 if (*p->pf == 'g' || *p->pf == 'e')
1083 /* the sign of the exp */
1093 /* pad out to at least two spaces. pad with `0' if the exponent is a
1109 /* Return a new string with the digits in S grouped according to the locale's
1110 grouping info and thousands separator. If no grouping should be performed,
1111 this returns NULL; the caller needs to check for it. */
1116 char *se, *ret, *re, *g;
1119 if (grouping == 0 || *grouping <= 0 || *grouping == CHAR_MAX)
1120 return ((char *)NULL);
1122 /* find min grouping to size returned string */
1123 for (len = *grouping, g = grouping; *g; g++)
1124 if (*g > 0 && *g < len)
1128 len = slen / len + 1;
1129 ret = (char *)xmalloc (slen + len + 1);
1130 re = ret + slen + len;
1141 /* handle `-' inserted by numtoa() and the fmtu* family here. */
1142 if (se > s && se[-1] == '-')
1145 /* begin new group. */
1146 if (--len == 0 && se > s)
1149 len = *++g; /* was g++, but that uses first char twice (glibc bug, too) */
1151 len = *--g; /* use previous grouping */
1152 else if (*g == CHAR_MAX)
1164 memmove (ret, re, strlen (re) + 1);
1172 /* initialize the conversion specifiers */
1177 p->flags &= PF_ALLOCBUF; /* preserve PF_ALLOCBUF flag */
1178 p->precision = p->width = NOT_FOUND;
1179 p->justify = NOT_FOUND;
1184 init_data (p, string, length, format, mode)
1191 p->length = length - 1; /* leave room for '\0' */
1192 p->holder = p->base = string;
1195 p->flags = (mode == PFM_AS) ? PF_ALLOCBUF : 0;
1199 #if defined (__STDC__)
1200 vsnprintf_internal(struct DATA *data, char *string, size_t length, const char *format, va_list args)
1202 vsnprintf_internal(data, string, length, format, args)
1210 double d; /* temporary holder */
1211 #ifdef HAVE_LONG_DOUBLE
1212 long double ld; /* for later */
1215 #ifdef HAVE_LONG_LONG
1216 unsigned long long ull;
1220 #if HANDLE_MULTIBYTE
1224 const char *convstart;
1227 /* Sanity check, the string length must be >= 0. C99 actually says that
1228 LENGTH can be zero here, in the case of snprintf/vsnprintf (it's never
1229 0 in the case of asprintf/vasprintf), and the return value is the number
1230 of characters that would have been written. */
1237 /* Reset these for each call because the locale might have changed. */
1238 decpoint = thoussep = 0;
1242 for (; c = *(data->pf); data->pf++)
1250 convstart = data->pf;
1251 init_conv_flag (data); /* initialise format flags */
1254 for (state = 1; state && *data->pf; )
1257 /* fmtend = data->pf */
1258 #if defined (FLOATING_POINT) && defined (HAVE_LONG_DOUBLE)
1259 if (data->flags & PF_LONGDBL)
1266 # ifdef HAVE_PRINTF_A_FORMAT
1270 ld = GETLDOUBLE (data);
1271 ldfallback (data, convstart, data->pf, ld);
1275 #endif /* FLOATING_POINT && HAVE_LONG_DOUBLE */
1279 /* Parse format flags */
1280 case '\0': /* a NULL here ? ? bail out */
1281 *data->holder = '\0';
1282 return data->counter;
1285 data->flags |= PF_ALTFORM;
1288 data->flags |= PF_ZEROPAD;
1292 if (data->flags & PF_DOT)
1293 data->flags |= PF_STAR_P;
1295 data->flags |= PF_STAR_W;
1298 if ((data->flags & PF_DOT) == 0)
1300 data->flags |= PF_LADJUST;
1301 data->justify = LEFT;
1307 if ((data->flags & PF_PLUS) == 0)
1308 data->flags |= PF_SPACE;
1311 if ((data->flags & PF_DOT) == 0)
1313 data->flags |= PF_PLUS;
1314 data->justify = RIGHT;
1318 data->flags |= PF_THOUSANDS;
1321 case '1': case '2': case '3':
1322 case '4': case '5': case '6':
1323 case '7': case '8': case '9':
1327 n = n * 10 + TODIGIT(c);
1331 data->pf--; /* went too far */
1334 if (data->flags & PF_DOT)
1335 data->precision = negprec ? NOT_FOUND : n;
1340 /* optional precision */
1342 data->flags |= PF_DOT;
1343 data->precision = 0;
1346 /* length modifiers */
1348 data->flags |= (data->flags & PF_SHORTINT) ? PF_SIGNEDCHAR : PF_SHORTINT;
1351 data->flags |= (data->flags & PF_LONGINT) ? PF_LONGLONG : PF_LONGINT;
1354 data->flags |= PF_LONGDBL;
1357 data->flags |= PF_LONGLONG;
1360 data->flags |= PF_INTMAX_T;
1361 SET_SIZE_FLAGS(data, intmax_t);
1364 data->flags |= PF_SIZE_T;
1365 SET_SIZE_FLAGS(data, size_t);
1368 data->flags |= PF_PTRDIFF_T;
1369 SET_SIZE_FLAGS(data, ptrdiff_t);
1372 /* Conversion specifiers */
1373 #ifdef FLOATING_POINT
1374 case 'f': /* float, double */
1377 d = GETDOUBLE(data);
1386 d = GETDOUBLE(data);
1387 i = (d != 0.) ? log_10(d) : -1;
1389 * for '%g|%G' ANSI: use f if exponent
1390 * is in the range or [-4,p] exclusively
1393 if (-4 < i && i < data->precision)
1395 /* reset precision */
1396 data->precision -= i + 1;
1401 /* reduce precision by 1 because of leading digit before
1402 decimal point in e format. */
1409 case 'E': /* Exponent double */
1411 d = GETDOUBLE(data);
1415 # ifdef HAVE_PRINTF_A_FORMAT
1419 d = GETDOUBLE(data);
1420 dfallback(data, convstart, data->pf, d);
1423 # endif /* HAVE_PRINTF_A_FORMAT */
1424 #endif /* FLOATING_POINT */
1426 data->flags |= PF_LONGINT;
1430 #ifdef HAVE_LONG_LONG
1431 if (data->flags & PF_LONGLONG)
1433 ull = GETARG (unsigned long long);
1434 lnumber(data, ull, 10);
1439 ul = GETUNSIGNED(data);
1440 number(data, ul, 10);
1445 data->flags |= PF_LONGINT;
1447 case 'd': /* decimal */
1450 #ifdef HAVE_LONG_LONG
1451 if (data->flags & PF_LONGLONG)
1453 ull = GETARG (long long);
1454 lnumber(data, ull, 10);
1459 ul = GETSIGNED(data);
1460 number(data, ul, 10);
1464 case 'o': /* octal */
1466 #ifdef HAVE_LONG_LONG
1467 if (data->flags & PF_LONGLONG)
1469 ull = GETARG (unsigned long long);
1470 lnumber(data, ull, 8);
1475 ul = GETUNSIGNED(data);
1476 number(data, ul, 8);
1481 case 'X': /* hexadecimal */
1483 #ifdef HAVE_LONG_LONG
1484 if (data->flags & PF_LONGLONG)
1486 ull = GETARG (unsigned long long);
1487 lnumber(data, ull, 16);
1492 ul = GETUNSIGNED(data);
1493 number(data, ul, 16);
1499 ul = (unsigned long)GETARG (void *);
1503 #if HANDLE_MULTIBYTE
1505 data->flags |= PF_LONGINT;
1508 case 'c': /* character */
1510 #if HANDLE_MULTIBYTE
1511 if (data->flags & PF_LONGINT)
1513 wc = GETARG (wint_t);
1524 #if HANDLE_MULTIBYTE
1526 data->flags |= PF_LONGINT;
1529 case 's': /* string */
1531 #if HANDLE_MULTIBYTE
1532 if (data->flags & PF_LONGINT)
1534 ws = GETARG (wchar_t *);
1535 wstrings (data, ws);
1540 s = GETARG (char *);
1546 #ifdef HAVE_LONG_LONG
1547 if (data->flags & PF_LONGLONG)
1548 *(GETARG (long long *)) = data->counter;
1551 if (data->flags & PF_LONGINT)
1552 *(GETARG (long *)) = data->counter;
1553 else if (data->flags & PF_SHORTINT)
1554 *(GETARG (short *)) = data->counter;
1556 *(GETARG (int *)) = data->counter;
1559 case '%': /* nothing just % */
1560 PUT_CHAR('%', data);
1564 /* is this an error ? maybe bail out */
1568 } /* end of `%' for loop */
1569 } /* end of format string for loop */
1571 if (data->length >= 0)
1572 *data->holder = '\0'; /* the end ye ! */
1574 return data->counter;
1577 #if defined (FLOATING_POINT) && defined (HAVE_LONG_DOUBLE)
1579 * Printing floating point numbers accurately is an art. I'm not good
1580 * at it. Fall back to sprintf for long double formats.
1583 ldfallback (data, fs, fe, ld)
1585 const char *fs, *fe;
1589 char fmtbuf[FALLBACK_FMTSIZE], *obuf;
1592 fl = LFALLBACK_BASE + (data->precision < 6 ? 6 : data->precision) + 2;
1593 obuf = (char *)xmalloc (fl);
1595 strncpy (fmtbuf, fs, fl);
1598 if ((data->flags & PF_STAR_W) && (data->flags & PF_STAR_P))
1599 sprintf (obuf, fmtbuf, data->width, data->precision, ld);
1600 else if (data->flags & PF_STAR_W)
1601 sprintf (obuf, fmtbuf, data->width, ld);
1602 else if (data->flags & PF_STAR_P)
1603 sprintf (obuf, fmtbuf, data->precision, ld);
1605 sprintf (obuf, fmtbuf, ld);
1607 for (x = obuf; *x; x++)
1608 PUT_CHAR (*x, data);
1611 #endif /* FLOATING_POINT && HAVE_LONG_DOUBLE */
1613 #ifdef FLOATING_POINT
1614 /* Used for %a, %A if the libc printf supports them. */
1616 dfallback (data, fs, fe, d)
1618 const char *fs, *fe;
1622 char fmtbuf[FALLBACK_FMTSIZE], obuf[FALLBACK_BASE];
1626 strncpy (fmtbuf, fs, fl);
1629 if ((data->flags & PF_STAR_W) && (data->flags & PF_STAR_P))
1630 sprintf (obuf, fmtbuf, data->width, data->precision, d);
1631 else if (data->flags & PF_STAR_W)
1632 sprintf (obuf, fmtbuf, data->width, d);
1633 else if (data->flags & PF_STAR_P)
1634 sprintf (obuf, fmtbuf, data->precision, d);
1636 sprintf (obuf, fmtbuf, d);
1638 for (x = obuf; *x; x++)
1639 PUT_CHAR (*x, data);
1641 #endif /* FLOATING_POINT */
1643 #ifndef HAVE_SNPRINTF
1646 #if defined (__STDC__)
1647 vsnprintf(char *string, size_t length, const char *format, va_list args)
1649 vsnprintf(string, length, format, args)
1658 if (string == 0 && length != 0)
1660 init_data (&data, string, length, format, PFM_SN);
1661 return (vsnprintf_internal(&data, string, length, format, args));
1665 #if defined(PREFER_STDARG)
1666 snprintf(char *string, size_t length, const char * format, ...)
1668 snprintf(string, length, format, va_alist)
1679 SH_VA_START(args, format);
1681 if (string == 0 && length != 0)
1683 init_data (&data, string, length, format, PFM_SN);
1684 rval = vsnprintf_internal (&data, string, length, format, args);
1691 #endif /* HAVE_SNPRINTF */
1693 #ifndef HAVE_ASPRINTF
1696 #if defined (__STDC__)
1697 vasprintf(char **stringp, const char *format, va_list args)
1699 vasprintf(stringp, format, args)
1709 string = (char *)xmalloc(ASBUFSIZE);
1710 init_data (&data, string, ASBUFSIZE, format, PFM_AS);
1711 r = vsnprintf_internal(&data, string, ASBUFSIZE, format, args);
1712 *stringp = data.base; /* not string in case reallocated */
1717 #if defined(PREFER_STDARG)
1718 asprintf(char **stringp, const char * format, ...)
1720 asprintf(stringp, format, va_alist)
1729 SH_VA_START(args, format);
1731 rval = vasprintf (stringp, format, args);
1745 memory_error_and_abort ()
1747 write (2, "out of virtual memory\n", 22);
1757 ret = malloc(bytes);
1759 memory_error_and_abort ();
1764 xrealloc (pointer, bytes)
1770 ret = pointer ? realloc(pointer, bytes) : malloc(bytes);
1772 memory_error_and_abort ();
1784 /* set of small tests for snprintf() */
1791 #ifdef HAVE_LOCALE_H
1792 setlocale(LC_ALL, "");
1796 si = snprintf((char *)NULL, 0, "abcde\n");
1797 printf("snprintf returns %d with NULL first argument and size of 0\n", si);
1798 si = snprintf(holder, 0, "abcde\n");
1799 printf("snprintf returns %d with non-NULL first argument and size of 0\n", si);
1800 si = snprintf((char *)NULL, 16, "abcde\n");
1801 printf("snprintf returns %d with NULL first argument and non-zero size\n", si);
1804 printf("Suite of test for snprintf:\n");
1805 printf("a_format\n");
1806 printf("printf() format\n");
1807 printf("snprintf() format\n\n");
1809 /* Checking the field widths */
1811 printf("/%%ld %%ld/, 336, 336\n");
1812 snprintf(holder, sizeof holder, "/%ld %ld/\n", 336, 336);
1813 asprintf(&h, "/%ld %ld/\n", 336, 336);
1814 printf("/%ld %ld/\n", 336, 336);
1815 printf("%s", holder);
1818 printf("/%%d/, 336\n");
1819 snprintf(holder, sizeof holder, "/%d/\n", 336);
1820 asprintf(&h, "/%d/\n", 336);
1821 printf("/%d/\n", 336);
1822 printf("%s", holder);
1825 printf("/%%2d/, 336\n");
1826 snprintf(holder, sizeof holder, "/%2d/\n", 336);
1827 asprintf(&h, "/%2d/\n", 336);
1828 printf("/%2d/\n", 336);
1829 printf("%s", holder);
1832 printf("/%%10d/, 336\n");
1833 snprintf(holder, sizeof holder, "/%10d/\n", 336);
1834 asprintf(&h, "/%10d/\n", 336);
1835 printf("/%10d/\n", 336);
1836 printf("%s", holder);
1839 printf("/%%-10d/, 336\n");
1840 snprintf(holder, sizeof holder, "/%-10d/\n", 336);
1841 asprintf(&h, "/%-10d/\n", 336);
1842 printf("/%-10d/\n", 336);
1843 printf("%s", holder);
1847 /* floating points */
1849 printf("/%%f/, 1234.56\n");
1850 snprintf(holder, sizeof holder, "/%f/\n", 1234.56);
1851 asprintf(&h, "/%f/\n", 1234.56);
1852 printf("/%f/\n", 1234.56);
1853 printf("%s", holder);
1856 printf("/%%e/, 1234.56\n");
1857 snprintf(holder, sizeof holder, "/%e/\n", 1234.56);
1858 asprintf(&h, "/%e/\n", 1234.56);
1859 printf("/%e/\n", 1234.56);
1860 printf("%s", holder);
1863 printf("/%%4.2f/, 1234.56\n");
1864 snprintf(holder, sizeof holder, "/%4.2f/\n", 1234.56);
1865 asprintf(&h, "/%4.2f/\n", 1234.56);
1866 printf("/%4.2f/\n", 1234.56);
1867 printf("%s", holder);
1870 printf("/%%3.1f/, 1234.56\n");
1871 snprintf(holder, sizeof holder, "/%3.1f/\n", 1234.56);
1872 asprintf(&h, "/%3.1f/\n", 1234.56);
1873 printf("/%3.1f/\n", 1234.56);
1874 printf("%s", holder);
1877 printf("/%%10.3f/, 1234.56\n");
1878 snprintf(holder, sizeof holder, "/%10.3f/\n", 1234.56);
1879 asprintf(&h, "/%10.3f/\n", 1234.56);
1880 printf("/%10.3f/\n", 1234.56);
1881 printf("%s", holder);
1884 printf("/%%10.3e/, 1234.56\n");
1885 snprintf(holder, sizeof holder, "/%10.3e/\n", 1234.56);
1886 asprintf(&h, "/%10.3e/\n", 1234.56);
1887 printf("/%10.3e/\n", 1234.56);
1888 printf("%s", holder);
1891 printf("/%%+4.2f/, 1234.56\n");
1892 snprintf(holder, sizeof holder, "/%+4.2f/\n", 1234.56);
1893 asprintf(&h, "/%+4.2f/\n", 1234.56);
1894 printf("/%+4.2f/\n", 1234.56);
1895 printf("%s", holder);
1898 printf("/%%010.2f/, 1234.56\n");
1899 snprintf(holder, sizeof holder, "/%010.2f/\n", 1234.56);
1900 asprintf(&h, "/%010.2f/\n", 1234.56);
1901 printf("/%010.2f/\n", 1234.56);
1902 printf("%s", holder);
1905 #define BLURB "Outstanding acting !"
1906 /* strings precisions */
1908 printf("/%%2s/, \"%s\"\n", BLURB);
1909 snprintf(holder, sizeof holder, "/%2s/\n", BLURB);
1910 asprintf(&h, "/%2s/\n", BLURB);
1911 printf("/%2s/\n", BLURB);
1912 printf("%s", holder);
1915 printf("/%%22s/ %s\n", BLURB);
1916 snprintf(holder, sizeof holder, "/%22s/\n", BLURB);
1917 asprintf(&h, "/%22s/\n", BLURB);
1918 printf("/%22s/\n", BLURB);
1919 printf("%s", holder);
1922 printf("/%%22.5s/ %s\n", BLURB);
1923 snprintf(holder, sizeof holder, "/%22.5s/\n", BLURB);
1924 asprintf(&h, "/%22.5s/\n", BLURB);
1925 printf("/%22.5s/\n", BLURB);
1926 printf("%s", holder);
1929 printf("/%%-22.5s/ %s\n", BLURB);
1930 snprintf(holder, sizeof holder, "/%-22.5s/\n", BLURB);
1931 asprintf(&h, "/%-22.5s/\n", BLURB);
1932 printf("/%-22.5s/\n", BLURB);
1933 printf("%s", holder);
1936 /* see some flags */
1938 printf("%%x %%X %%#x, 31, 31, 31\n");
1939 snprintf(holder, sizeof holder, "%x %X %#x\n", 31, 31, 31);
1940 asprintf(&h, "%x %X %#x\n", 31, 31, 31);
1941 printf("%x %X %#x\n", 31, 31, 31);
1942 printf("%s", holder);
1945 printf("**%%d**%% d**%% d**, 42, 42, -42\n");
1946 snprintf(holder, sizeof holder, "**%d**% d**% d**\n", 42, 42, -42);
1947 asprintf(&h, "**%d**% d**% d**\n", 42, 42, -42);
1948 printf("**%d**% d**% d**\n", 42, 42, -42);
1949 printf("%s", holder);
1954 printf("/%%g/, 31.4\n");
1955 snprintf(holder, sizeof holder, "/%g/\n", 31.4);
1956 asprintf(&h, "/%g/\n", 31.4);
1957 printf("/%g/\n", 31.4);
1958 printf("%s", holder);
1961 printf("/%%.6g/, 31.4\n");
1962 snprintf(holder, sizeof holder, "/%.6g/\n", 31.4);
1963 asprintf(&h, "/%.6g/\n", 31.4);
1964 printf("/%.6g/\n", 31.4);
1965 printf("%s", holder);
1968 printf("/%%.1G/, 31.4\n");
1969 snprintf(holder, sizeof holder, "/%.1G/\n", 31.4);
1970 asprintf(&h, "/%.1G/\n", 31.4);
1971 printf("/%.1G/\n", 31.4);
1972 printf("%s", holder);
1975 printf("/%%.1G/, 3100000000.4\n");
1976 snprintf(holder, sizeof holder, "/%.1G/\n", 3100000000.4);
1977 asprintf(&h, "/%.1G/\n", 3100000000.4);
1978 printf("/%.1G/\n", 3100000000.4);
1979 printf("%s", holder);
1983 printf("abc%n", &i); printf("%d\n", i);
1984 snprintf(holder, sizeof holder, "abc%n", &i);
1985 printf("%s", holder); printf("%d\n\n", i);
1986 asprintf(&h, "abc%n", &i);
1987 printf("%s", h); printf("%d\n\n", i);
1989 printf("%%*.*s --> 10.10\n");
1990 snprintf(holder, sizeof holder, "%*.*s\n", 10, 10, BLURB);
1991 asprintf(&h, "%*.*s\n", 10, 10, BLURB);
1992 printf("%*.*s\n", 10, 10, BLURB);
1993 printf("%s", holder);
1996 printf("%%%%%%%%\n");
1997 snprintf(holder, sizeof holder, "%%%%\n");
1998 asprintf(&h, "%%%%\n");
2000 printf("%s", holder);
2003 #define BIG "Hello this is a too big string for the buffer"
2004 /* printf("A buffer to small of 10, trying to put this:\n");*/
2005 printf("<%%>, %s\n", BIG);
2006 i = snprintf(holder, 10, "%s\n", BIG);
2007 i = asprintf(&h, "%s", BIG);
2008 printf("<%s>\n", BIG);
2009 printf("<%s>\n", holder);
2010 printf("<%s>\n\n", h);
2012 printf ("<%%p> vsnprintf\n");
2013 i = snprintf(holder, 100, "%p", vsnprintf);
2014 i = asprintf(&h, "%p", vsnprintf);
2015 printf("<%p>\n", vsnprintf);
2016 printf("<%s>\n", holder);
2017 printf("<%s>\n\n", h);
2019 printf ("<%%lu> LONG_MAX+1\n");
2020 i = snprintf(holder, 100, "%lu", (unsigned long)(LONG_MAX)+1);
2021 i = asprintf(&h, "%lu", (unsigned long)(LONG_MAX)+1);
2022 printf("<%lu>\n", (unsigned long)(LONG_MAX)+1);
2023 printf("<%s>\n", holder);
2024 printf("<%s>\n\n", h);
2026 #ifdef HAVE_LONG_LONG
2027 printf ("<%%llu> LLONG_MAX+1\n");
2028 i = snprintf(holder, 100, "%llu", (unsigned long long)(LLONG_MAX)+1);
2029 i = asprintf(&h, "%llu", (unsigned long long)(LLONG_MAX)+1);
2030 printf("<%llu>\n", (unsigned long long)(LLONG_MAX)+1);
2031 printf("<%s>\n", holder);
2032 printf("<%s>\n\n", h);
2035 #ifdef HAVE_LONG_DOUBLE
2036 printf ("<%%6.2LE> 42.42\n");
2037 i = snprintf(holder, 100, "%6.2LE", (long double)42.42);
2038 i = asprintf(&h, "%6.2LE", (long double)42.42);
2039 printf ("<%6.2LE>\n", (long double)42.42);
2040 printf ("<%s>\n", holder);
2041 printf ("<%s>\n\n", h);
2044 #ifdef HAVE_PRINTF_A_FORMAT
2045 printf ("<%%6.2A> 42.42\n");
2046 i = snprintf(holder, 100, "%6.2A", 42.42);
2047 i = asprintf(&h, "%6.2A", 42.42);
2048 printf ("<%6.2A>\n", 42.42);
2049 printf ("<%s>\n", holder);
2050 printf ("<%s>\n\n", h);
2052 printf ("<%%6.2LA> 42.42\n");
2053 i = snprintf(holder, 100, "%6.2LA", (long double)42.42);
2054 i = asprintf(&h, "%6.2LA", (long double)42.42);
2055 printf ("<%6.2LA>\n", (long double)42.42);
2056 printf ("<%s>\n", holder);
2057 printf ("<%s>\n\n", h);
2060 printf ("<%%.10240f> DBL_MAX\n");
2061 si = snprintf(holder, 100, "%.10240f", DBL_MAX);
2062 ai = asprintf(&h, "%.10240f", DBL_MAX);
2063 printf ("<%.10240f>\n", DBL_MAX);
2064 printf ("<%d> <%s>\n", si, holder);
2065 printf ("<%d> <%s>\n\n", ai, h);
2067 printf ("<%%.10240Lf> LDBL_MAX\n");
2068 si = snprintf(holder, 100, "%.10240Lf", (long double)LDBL_MAX);
2069 ai = asprintf(&h, "%.10240Lf", (long double)LDBL_MAX);
2070 printf ("<%.10240Lf>\n", (long double)LDBL_MAX);
2071 printf ("<%d> <%s>\n", si, holder);
2072 printf ("<%d> <%s>\n\n", ai, h);
2075 printf("/%%g/, 421.2345\n");
2076 snprintf(holder, sizeof holder, "/%g/\n", 421.2345);
2077 asprintf(&h, "/%g/\n", 421.2345);
2078 printf("/%g/\n", 421.2345);
2079 printf("%s", holder);
2082 printf("/%%g/, 4214.2345\n");
2083 snprintf(holder, sizeof holder, "/%g/\n", 4214.2345);
2084 asprintf(&h, "/%g/\n", 4214.2345);
2085 printf("/%g/\n", 4214.2345);
2086 printf("%s", holder);
2089 printf("/%%.5g/, 4214.2345\n");
2090 snprintf(holder, sizeof holder, "/%.5g/\n", 4214.2345);
2091 asprintf(&h, "/%.5g/\n", 4214.2345);
2092 printf("/%.5g/\n", 4214.2345);
2093 printf("%s", holder);
2096 printf("/%%.4g/, 4214.2345\n");
2097 snprintf(holder, sizeof holder, "/%.4g/\n", 4214.2345);
2098 asprintf(&h, "/%.4g/\n", 4214.2345);
2099 printf("/%.4g/\n", 4214.2345);
2100 printf("%s", holder);
2103 printf("/%%'ld %%'ld/, 12345, 1234567\n");
2104 snprintf(holder, sizeof holder, "/%'ld %'ld/\n", 12345, 1234567);
2105 asprintf(&h, "/%'ld %'ld/\n", 12345, 1234567);
2106 printf("/%'ld %'ld/\n", 12345, 1234567);
2107 printf("%s", holder);
2110 printf("/%%'ld %%'ld/, 336, 3336\n");
2111 snprintf(holder, sizeof holder, "/%'ld %'ld/\n", 336, 3336);
2112 asprintf(&h, "/%'ld %'ld/\n", 336, 3336);
2113 printf("/%'ld %'ld/\n", 336, 3336);
2114 printf("%s", holder);
2117 printf("/%%'ld %%'ld/, -42786, -142786\n");
2118 snprintf(holder, sizeof holder, "/%'ld %'ld/\n", -42786, -142786);
2119 asprintf(&h, "/%'ld %'ld/\n", -42786, -142786);
2120 printf("/%'ld %'ld/\n", -42786, -142786);
2121 printf("%s", holder);
2124 printf("/%%'f %%'f/, 421.2345, 421234.56789\n");
2125 snprintf(holder, sizeof holder, "/%'f %'f/\n", 421.2345, 421234.56789);
2126 asprintf(&h, "/%'f %'f/\n", 421.2345, 421234.56789);
2127 printf("/%'f %'f/\n", 421.2345, 421234.56789);
2128 printf("%s", holder);
2131 printf("/%%'f %%'f/, -421.2345, -421234.56789\n");
2132 snprintf(holder, sizeof holder, "/%'f %'f/\n", -421.2345, -421234.56789);
2133 asprintf(&h, "/%'f %'f/\n", -421.2345, -421234.56789);
2134 printf("/%'f %'f/\n", -421.2345, -421234.56789);
2135 printf("%s", holder);
2138 printf("/%%'g %%'g/, 421.2345, 421234.56789\n");
2139 snprintf(holder, sizeof holder, "/%'g %'g/\n", 421.2345, 421234.56789);
2140 asprintf(&h, "/%'g %'g/\n", 421.2345, 421234.56789);
2141 printf("/%'g %'g/\n", 421.2345, 421234.56789);
2142 printf("%s", holder);
2145 printf("/%%'g %%'g/, -421.2345, -421234.56789\n");
2146 snprintf(holder, sizeof holder, "/%'g %'g/\n", -421.2345, -421234.56789);
2147 asprintf(&h, "/%'g %'g/\n", -421.2345, -421234.56789);
2148 printf("/%'g %'g/\n", -421.2345, -421234.56789);
2149 printf("%s", holder);
2153 printf("/%%'g/, 4213455.8392\n");
2154 snprintf(holder, sizeof holder, "/%'g/\n", 4213455.8392);
2155 asprintf(&h, "/%'g/\n", 4213455.8392);
2156 printf("/%'g/\n", 4213455.8392);
2157 printf("%s", holder);