xref: /titanic_41/usr/src/cmd/ssh/libopenbsd-compat/common/bsd-snprintf.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1 /**************************************************************
2  * Original:
3  * Patrick Powell Tue Apr 11 09:48:21 PDT 1995
4  * A bombproof version of doprnt (dopr) included.
5  * Sigh.  This sort of thing is always nasty do deal with.  Note that
6  * the version here does not include floating point...
7  *
8  * snprintf() is used instead of sprintf() as it does limit checks
9  * for string length.  This covers a nasty loophole.
10  *
11  * The other functions are there to prevent NULL pointers from
12  * causing nast effects.
13  *
14  * More Recently:
15  *  Brandon Long <blong@fiction.net> 9/15/96 for mutt 0.43
16  *  This was ugly.  It is still ugly.  I opted out of floating point
17  *  numbers, but the formatter understands just about everything
18  *  from the normal C string format, at least as far as I can tell from
19  *  the Solaris 2.5 printf(3S) man page.
20  *
21  *  Brandon Long <blong@fiction.net> 10/22/97 for mutt 0.87.1
22  *    Ok, added some minimal floating point support, which means this
23  *    probably requires libm on most operating systems.  Don't yet
24  *    support the exponent (e,E) and sigfig (g,G).  Also, fmtint()
25  *    was pretty badly broken, it just wasn't being exercised in ways
26  *    which showed it, so that's been fixed.  Also, formated the code
27  *    to mutt conventions, and removed dead code left over from the
28  *    original.  Also, there is now a builtin-test, just compile with:
29  *           gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm
30  *    and run snprintf for results.
31  *
32  *  Thomas Roessler <roessler@guug.de> 01/27/98 for mutt 0.89i
33  *    The PGP code was using unsigned hexadecimal formats.
34  *    Unfortunately, unsigned formats simply didn't work.
35  *
36  *  Michael Elkins <me@cs.hmc.edu> 03/05/98 for mutt 0.90.8
37  *    The original code assumed that both snprintf() and vsnprintf() were
38  *    missing.  Some systems only have snprintf() but not vsnprintf(), so
39  *    the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF.
40  *
41  *  Ben Lindstrom <mouring@eviladmin.org> 09/27/00 for OpenSSH
42  *    Welcome to the world of %lld and %qd support.  With other
43  *    long long support.  This is needed for sftp-server to work
44  *    right.
45  *
46  *  Ben Lindstrom <mouring@eviladmin.org> 02/12/01 for OpenSSH
47  *    Removed all hint of VARARGS stuff and banished it to the void,
48  *    and did a bit of KNF style work to make things a bit more
49  *    acceptable.  Consider stealing from mutt or enlightenment.
50  **************************************************************/
51 
52 #include "includes.h"
53 
54 RCSID("$Id: bsd-snprintf.c,v 1.5 2001/02/25 23:20:41 mouring Exp $");
55 
56 #pragma ident	"%Z%%M%	%I%	%E% SMI"
57 
58 #if defined(BROKEN_SNPRINTF)		/* For those with broken snprintf() */
59 # undef HAVE_SNPRINTF
60 # undef HAVE_VSNPRINTF
61 #endif
62 
63 #if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF)
64 
65 static void
66 dopr(char *buffer, size_t maxlen, const char *format, va_list args);
67 
68 static void
69 fmtstr(char *buffer, size_t *currlen, size_t maxlen, char *value, int flags,
70        int min, int max);
71 
72 static void
73 fmtint(char *buffer, size_t *currlen, size_t maxlen, long value, int base,
74        int min, int max, int flags);
75 
76 static void
77 fmtfp(char *buffer, size_t *currlen, size_t maxlen, long double fvalue,
78       int min, int max, int flags);
79 
80 static void
81 dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c);
82 
83 /*
84  * dopr(): poor man's version of doprintf
85  */
86 
87 /* format read states */
88 #define DP_S_DEFAULT 0
89 #define DP_S_FLAGS   1
90 #define DP_S_MIN     2
91 #define DP_S_DOT     3
92 #define DP_S_MAX     4
93 #define DP_S_MOD     5
94 #define DP_S_CONV    6
95 #define DP_S_DONE    7
96 
97 /* format flags - Bits */
98 #define DP_F_MINUS 	(1 << 0)
99 #define DP_F_PLUS  	(1 << 1)
100 #define DP_F_SPACE 	(1 << 2)
101 #define DP_F_NUM   	(1 << 3)
102 #define DP_F_ZERO  	(1 << 4)
103 #define DP_F_UP    	(1 << 5)
104 #define DP_F_UNSIGNED 	(1 << 6)
105 
106 /* Conversion Flags */
107 #define DP_C_SHORT     1
108 #define DP_C_LONG      2
109 #define DP_C_LDOUBLE   3
110 #define DP_C_LONG_LONG 4
111 
112 #define char_to_int(p) (p - '0')
113 #define abs_val(p) (p < 0 ? -p : p)
114 
115 
116 static void
dopr(char * buffer,size_t maxlen,const char * format,va_list args)117 dopr(char *buffer, size_t maxlen, const char *format, va_list args)
118 {
119 	char *strvalue;
120 	char ch;
121 	long value;
122 	long double fvalue;
123 	int min = 0;
124 	int max = -1;
125 	int state = DP_S_DEFAULT;
126 	int flags = 0;
127 	int cflags = 0;
128 	size_t currlen = 0;
129 
130 	ch = *format++;
131 
132 	while (state != DP_S_DONE) {
133 		if ((ch == '\0') || (currlen >= maxlen))
134 			state = DP_S_DONE;
135 
136 		switch(state) {
137 			case DP_S_DEFAULT:
138 				if (ch == '%')
139 					state = DP_S_FLAGS;
140 				else
141 					dopr_outch(buffer, &currlen, maxlen, ch);
142 				ch = *format++;
143 				break;
144 			case DP_S_FLAGS:
145 				switch (ch) {
146 					case '-':
147 						flags |= DP_F_MINUS;
148 						ch = *format++;
149 						break;
150 					case '+':
151 						flags |= DP_F_PLUS;
152 						ch = *format++;
153 						break;
154 					case ' ':
155 						flags |= DP_F_SPACE;
156 						ch = *format++;
157 						break;
158 					case '#':
159 						flags |= DP_F_NUM;
160 						ch = *format++;
161 						break;
162 					case '0':
163 						flags |= DP_F_ZERO;
164 						ch = *format++;
165 						break;
166 					default:
167 						state = DP_S_MIN;
168 						break;
169 				}
170 				break;
171 			case DP_S_MIN:
172 				if (isdigit((unsigned char)ch)) {
173 					min = 10*min + char_to_int (ch);
174 					ch = *format++;
175 				} else if (ch == '*') {
176 					min = va_arg (args, int);
177 					ch = *format++;
178 					state = DP_S_DOT;
179 				} else
180 					state = DP_S_DOT;
181 				break;
182 			case DP_S_DOT:
183 				if (ch == '.') {
184 					state = DP_S_MAX;
185 					ch = *format++;
186 				} else
187 					state = DP_S_MOD;
188 				break;
189 			case DP_S_MAX:
190 				if (isdigit((unsigned char)ch)) {
191 					if (max < 0)
192 						max = 0;
193 					max = 10*max + char_to_int(ch);
194 					ch = *format++;
195 				} else if (ch == '*') {
196 					max = va_arg (args, int);
197 					ch = *format++;
198 					state = DP_S_MOD;
199 				} else
200 					state = DP_S_MOD;
201 				break;
202 			case DP_S_MOD:
203 				switch (ch) {
204 					case 'h':
205 						cflags = DP_C_SHORT;
206 						ch = *format++;
207 						break;
208 					case 'l':
209 						cflags = DP_C_LONG;
210 						ch = *format++;
211 						if (ch == 'l') {
212 							cflags = DP_C_LONG_LONG;
213 							ch = *format++;
214 						}
215 						break;
216 					case 'q':
217 						cflags = DP_C_LONG_LONG;
218 						ch = *format++;
219 						break;
220 					case 'L':
221 						cflags = DP_C_LDOUBLE;
222 						ch = *format++;
223 						break;
224 					default:
225 						break;
226 				}
227 				state = DP_S_CONV;
228 				break;
229 			case DP_S_CONV:
230 				switch (ch) {
231 					case 'd':
232 					case 'i':
233 						if (cflags == DP_C_SHORT)
234 							value = va_arg(args, int);
235 						else if (cflags == DP_C_LONG)
236 							value = va_arg(args, long int);
237 						else if (cflags == DP_C_LONG_LONG)
238 							value = va_arg (args, long long);
239 						else
240 							value = va_arg (args, int);
241 						fmtint(buffer, &currlen, maxlen, value, 10, min, max, flags);
242 						break;
243 					case 'o':
244 						flags |= DP_F_UNSIGNED;
245 						if (cflags == DP_C_SHORT)
246 							value = va_arg(args, unsigned int);
247 						else if (cflags == DP_C_LONG)
248 							value = va_arg(args, unsigned long int);
249 						else if (cflags == DP_C_LONG_LONG)
250 							value = va_arg(args, unsigned long long);
251 						else
252 							value = va_arg(args, unsigned int);
253 						fmtint(buffer, &currlen, maxlen, value, 8, min, max, flags);
254 						break;
255 					case 'u':
256 						flags |= DP_F_UNSIGNED;
257 						if (cflags == DP_C_SHORT)
258 							value = va_arg(args, unsigned int);
259 						else if (cflags == DP_C_LONG)
260 							value = va_arg(args, unsigned long int);
261 						else if (cflags == DP_C_LONG_LONG)
262 							value = va_arg(args, unsigned long long);
263 						else
264 							value = va_arg(args, unsigned int);
265 						fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags);
266 						break;
267 					case 'X':
268 						flags |= DP_F_UP;
269 					case 'x':
270 						flags |= DP_F_UNSIGNED;
271 						if (cflags == DP_C_SHORT)
272 							value = va_arg(args, unsigned int);
273 						else if (cflags == DP_C_LONG)
274 							value = va_arg(args, unsigned long int);
275 						else if (cflags == DP_C_LONG_LONG)
276 							value = va_arg(args, unsigned long long);
277 						else
278 							value = va_arg(args, unsigned int);
279 						fmtint(buffer, &currlen, maxlen, value, 16, min, max, flags);
280 						break;
281 					case 'f':
282 						if (cflags == DP_C_LDOUBLE)
283 							fvalue = va_arg(args, long double);
284 						else
285 							fvalue = va_arg(args, double);
286 						/* um, floating point? */
287 						fmtfp(buffer, &currlen, maxlen, fvalue, min, max, flags);
288 						break;
289 					case 'E':
290 						flags |= DP_F_UP;
291 					case 'e':
292 						if (cflags == DP_C_LDOUBLE)
293 							fvalue = va_arg(args, long double);
294 						else
295 							fvalue = va_arg(args, double);
296 						break;
297 					case 'G':
298 						flags |= DP_F_UP;
299 					case 'g':
300 						if (cflags == DP_C_LDOUBLE)
301 							fvalue = va_arg(args, long double);
302 						else
303 							fvalue = va_arg(args, double);
304 						break;
305 					case 'c':
306 						dopr_outch(buffer, &currlen, maxlen, va_arg(args, int));
307 						break;
308 					case 's':
309 						strvalue = va_arg(args, char *);
310 						if (max < 0)
311 							max = maxlen; /* ie, no max */
312 						fmtstr(buffer, &currlen, maxlen, strvalue, flags, min, max);
313 						break;
314 					case 'p':
315 						strvalue = va_arg(args, void *);
316 						fmtint(buffer, &currlen, maxlen, (long) strvalue, 16, min, max, flags);
317 						break;
318 					case 'n':
319 						if (cflags == DP_C_SHORT) {
320 							short int *num;
321 							num = va_arg(args, short int *);
322 							*num = currlen;
323 						} else if (cflags == DP_C_LONG) {
324 							long int *num;
325 							num = va_arg(args, long int *);
326 							*num = currlen;
327 						} else if (cflags == DP_C_LONG_LONG) {
328 							long long *num;
329 							num = va_arg(args, long long *);
330 							*num = currlen;
331 						} else {
332 							int *num;
333 							num = va_arg(args, int *);
334 							*num = currlen;
335 						}
336 						break;
337 					case '%':
338 						dopr_outch(buffer, &currlen, maxlen, ch);
339 						break;
340 					case 'w': /* not supported yet, treat as next char */
341 						ch = *format++;
342 						break;
343 					default: /* Unknown, skip */
344 					break;
345 				}
346 				ch = *format++;
347 				state = DP_S_DEFAULT;
348 				flags = cflags = min = 0;
349 				max = -1;
350 				break;
351 			case DP_S_DONE:
352 				break;
353 			default: /* hmm? */
354 				break; /* some picky compilers need this */
355 		}
356 	}
357 	if (currlen < maxlen - 1)
358 		buffer[currlen] = '\0';
359 	else
360 		buffer[maxlen - 1] = '\0';
361 }
362 
363 static void
fmtstr(char * buffer,size_t * currlen,size_t maxlen,char * value,int flags,int min,int max)364 fmtstr(char *buffer, size_t *currlen, size_t maxlen,
365        char *value, int flags, int min, int max)
366 {
367 	int padlen, strln;     /* amount to pad */
368 	int cnt = 0;
369 
370 	if (value == 0)
371 		value = "<NULL>";
372 
373 	for (strln = 0; value[strln]; ++strln); /* strlen */
374 	padlen = min - strln;
375 	if (padlen < 0)
376 		padlen = 0;
377 	if (flags & DP_F_MINUS)
378 		padlen = -padlen; /* Left Justify */
379 
380 	while ((padlen > 0) && (cnt < max)) {
381 		dopr_outch(buffer, currlen, maxlen, ' ');
382 		--padlen;
383 		++cnt;
384 	}
385 	while (*value && (cnt < max)) {
386 		dopr_outch(buffer, currlen, maxlen, *value++);
387 		++cnt;
388 	}
389 	while ((padlen < 0) && (cnt < max)) {
390 		dopr_outch(buffer, currlen, maxlen, ' ');
391 		++padlen;
392 		++cnt;
393 	}
394 }
395 
396 /* Have to handle DP_F_NUM (ie 0x and 0 alternates) */
397 
398 static void
fmtint(char * buffer,size_t * currlen,size_t maxlen,long value,int base,int min,int max,int flags)399 fmtint(char *buffer, size_t *currlen, size_t maxlen,
400        long value, int base, int min, int max, int flags)
401 {
402 	unsigned long uvalue;
403 	char convert[20];
404 	int signvalue = 0;
405 	int place = 0;
406 	int spadlen = 0; /* amount to space pad */
407 	int zpadlen = 0; /* amount to zero pad */
408 	int caps = 0;
409 
410 	if (max < 0)
411 		max = 0;
412 
413 	uvalue = value;
414 
415 	if (!(flags & DP_F_UNSIGNED)) {
416 		if (value < 0) {
417 			signvalue = '-';
418 			uvalue = -value;
419 		} else if (flags & DP_F_PLUS)  /* Do a sign (+/i) */
420 			signvalue = '+';
421 		else if (flags & DP_F_SPACE)
422 			signvalue = ' ';
423 	}
424 
425 	if (flags & DP_F_UP)
426 		caps = 1; /* Should characters be upper case? */
427 
428 	do {
429 		convert[place++] =
430 			(caps? "0123456789ABCDEF":"0123456789abcdef")
431 			[uvalue % (unsigned)base];
432 		uvalue = (uvalue / (unsigned)base );
433 	} while (uvalue && (place < 20));
434 	if (place == 20)
435 		place--;
436 	convert[place] = 0;
437 
438 	zpadlen = max - place;
439 	spadlen = min - MAX (max, place) - (signvalue ? 1 : 0);
440 	if (zpadlen < 0)
441 		zpadlen = 0;
442 	if (spadlen < 0)
443 		spadlen = 0;
444 	if (flags & DP_F_ZERO) {
445 		zpadlen = MAX(zpadlen, spadlen);
446 		spadlen = 0;
447 	}
448 	if (flags & DP_F_MINUS)
449 		spadlen = -spadlen; /* Left Justifty */
450 
451 
452 	/* Spaces */
453 	while (spadlen > 0) {
454 		dopr_outch(buffer, currlen, maxlen, ' ');
455 		--spadlen;
456 	}
457 
458 	/* Sign */
459 	if (signvalue)
460 		dopr_outch(buffer, currlen, maxlen, signvalue);
461 
462 	/* Zeros */
463 	if (zpadlen > 0) {
464 		while (zpadlen > 0) {
465 			dopr_outch(buffer, currlen, maxlen, '0');
466 			--zpadlen;
467 		}
468 	}
469 
470 	/* Digits */
471 	while (place > 0)
472 		dopr_outch(buffer, currlen, maxlen, convert[--place]);
473 
474 	/* Left Justified spaces */
475 	while (spadlen < 0) {
476 		dopr_outch (buffer, currlen, maxlen, ' ');
477 		++spadlen;
478 	}
479 }
480 
481 static long double
pow10(int exp)482 pow10(int exp)
483 {
484 	long double result = 1;
485 
486 	while (exp) {
487 		result *= 10;
488 		exp--;
489 	}
490 
491 	return result;
492 }
493 
494 static long
round(long double value)495 round(long double value)
496 {
497 	long intpart = value;
498 
499 	value -= intpart;
500 	if (value >= 0.5)
501 		intpart++;
502 
503 	return intpart;
504 }
505 
506 static void
fmtfp(char * buffer,size_t * currlen,size_t maxlen,long double fvalue,int min,int max,int flags)507 fmtfp(char *buffer, size_t *currlen, size_t maxlen, long double fvalue,
508       int min, int max, int flags)
509 {
510 	char iconvert[20];
511 	char fconvert[20];
512 	int signvalue = 0;
513 	int iplace = 0;
514 	int fplace = 0;
515 	int padlen = 0; /* amount to pad */
516 	int zpadlen = 0;
517 	int caps = 0;
518 	long intpart;
519 	long fracpart;
520 	long double ufvalue;
521 
522 	/*
523 	 * AIX manpage says the default is 0, but Solaris says the default
524 	 * is 6, and sprintf on AIX defaults to 6
525 	 */
526 	if (max < 0)
527 		max = 6;
528 
529 	ufvalue = abs_val(fvalue);
530 
531 	if (fvalue < 0)
532 		signvalue = '-';
533 	else if (flags & DP_F_PLUS)  /* Do a sign (+/i) */
534 		signvalue = '+';
535 	else if (flags & DP_F_SPACE)
536 		signvalue = ' ';
537 
538 	intpart = ufvalue;
539 
540 	/*
541 	 * Sorry, we only support 9 digits past the decimal because of our
542 	 * conversion method
543 	 */
544 	if (max > 9)
545 		max = 9;
546 
547 	/* We "cheat" by converting the fractional part to integer by
548 	 * multiplying by a factor of 10
549 	 */
550 	fracpart = round((pow10 (max)) * (ufvalue - intpart));
551 
552 	if (fracpart >= pow10 (max)) {
553 		intpart++;
554 		fracpart -= pow10 (max);
555 	}
556 
557 	/* Convert integer part */
558 	do {
559 		iconvert[iplace++] =
560 		  (caps? "0123456789ABCDEF":"0123456789abcdef")[intpart % 10];
561 		intpart = (intpart / 10);
562 	} while(intpart && (iplace < 20));
563 	if (iplace == 20)
564 		iplace--;
565 	iconvert[iplace] = 0;
566 
567 	/* Convert fractional part */
568 	do {
569 		fconvert[fplace++] =
570 		  (caps? "0123456789ABCDEF":"0123456789abcdef")[fracpart % 10];
571 		fracpart = (fracpart / 10);
572 	} while(fracpart && (fplace < 20));
573 	if (fplace == 20)
574 		fplace--;
575 	fconvert[fplace] = 0;
576 
577 	/* -1 for decimal point, another -1 if we are printing a sign */
578 	padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
579 	zpadlen = max - fplace;
580 	if (zpadlen < 0)
581 		zpadlen = 0;
582 	if (padlen < 0)
583 		padlen = 0;
584 	if (flags & DP_F_MINUS)
585 		padlen = -padlen; /* Left Justifty */
586 
587 	if ((flags & DP_F_ZERO) && (padlen > 0)) {
588 		if (signvalue) {
589 			dopr_outch(buffer, currlen, maxlen, signvalue);
590 			--padlen;
591 			signvalue = 0;
592 		}
593 		while (padlen > 0) {
594 			dopr_outch(buffer, currlen, maxlen, '0');
595 			--padlen;
596 		}
597 	}
598 	while (padlen > 0) {
599 		dopr_outch(buffer, currlen, maxlen, ' ');
600 		--padlen;
601 	}
602 	if (signvalue)
603 		dopr_outch(buffer, currlen, maxlen, signvalue);
604 
605 	while (iplace > 0)
606 		dopr_outch(buffer, currlen, maxlen, iconvert[--iplace]);
607 
608 	/*
609 	 * Decimal point.  This should probably use locale to find the correct
610 	 * char to print out.
611 	 */
612 	dopr_outch(buffer, currlen, maxlen, '.');
613 
614 	while (fplace > 0)
615 		dopr_outch(buffer, currlen, maxlen, fconvert[--fplace]);
616 
617 	while (zpadlen > 0) {
618 		dopr_outch(buffer, currlen, maxlen, '0');
619 		--zpadlen;
620 	}
621 
622 	while (padlen < 0) {
623 		dopr_outch(buffer, currlen, maxlen, ' ');
624 		++padlen;
625 	}
626 }
627 
628 static void
dopr_outch(char * buffer,size_t * currlen,size_t maxlen,char c)629 dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c)
630 {
631 	if (*currlen < maxlen)
632 		buffer[(*currlen)++] = c;
633 }
634 #endif /* !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF) */
635 
636 #ifndef HAVE_VSNPRINTF
637 int
vsnprintf(char * str,size_t count,const char * fmt,va_list args)638 vsnprintf(char *str, size_t count, const char *fmt, va_list args)
639 {
640 	str[0] = 0;
641 	dopr(str, count, fmt, args);
642 
643 	return(strlen(str));
644 }
645 #endif /* !HAVE_VSNPRINTF */
646 
647 #ifndef HAVE_SNPRINTF
648 int
snprintf(char * str,size_t count,const char * fmt,...)649 snprintf(char *str,size_t count,const char *fmt,...)
650 {
651 	va_list ap;
652 
653 	va_start(ap, fmt);
654 	(void) vsnprintf(str, count, fmt, ap);
655 	va_end(ap);
656 
657 	return(strlen(str));
658 }
659 
660 #ifdef TEST_SNPRINTF
661 int
main(void)662 main(void)
663 {
664 #define LONG_STRING 1024
665 	char buf1[LONG_STRING];
666 	char buf2[LONG_STRING];
667 	char *fp_fmt[] = {
668 		"%-1.5f",
669 		"%1.5f",
670 		"%123.9f",
671 		"%10.5f",
672 		"% 10.5f",
673 		"%+22.9f",
674 		"%+4.9f",
675 		"%01.3f",
676 		"%4f",
677 		"%3.1f",
678 		"%3.2f",
679 		NULL
680 	};
681 	double fp_nums[] = {
682 		-1.5,
683 		134.21,
684 		91340.2,
685 		341.1234,
686 		0203.9,
687 		0.96,
688 		0.996,
689 		0.9996,
690 		1.996,
691 		4.136,
692 		0
693 	};
694 	char *int_fmt[] = {
695 		"%-1.5d",
696 		"%1.5d",
697 		"%123.9d",
698 		"%5.5d",
699 		"%10.5d",
700 		"% 10.5d",
701 		"%+22.33d",
702 		"%01.3d",
703 		"%4d",
704 		"%lld",
705 		"%qd",
706 		NULL
707 	};
708 	long long int_nums[] = { -1, 134, 91340, 341, 0203, 0, 9999999 };
709 	int x, y;
710 	int fail = 0;
711 	int num = 0;
712 
713 	printf("Testing snprintf format codes against system sprintf...\n");
714 
715 	for (x = 0; fp_fmt[x] != NULL ; x++) {
716 		for (y = 0; fp_nums[y] != 0 ; y++) {
717 			snprintf(buf1, sizeof (buf1), fp_fmt[x], fp_nums[y]);
718 			sprintf (buf2, fp_fmt[x], fp_nums[y]);
719 			if (strcmp (buf1, buf2)) {
720 				printf("snprintf doesn't match Format: %s\n\t"
721                                        "snprintf = %s\n\tsprintf  = %s\n",
722 					fp_fmt[x], buf1, buf2);
723 				fail++;
724 			}
725 			num++;
726 		}
727 	}
728 	for (x = 0; int_fmt[x] != NULL ; x++) {
729 		for (y = 0; int_nums[y] != 0 ; y++) {
730 			snprintf(buf1, sizeof (buf1), int_fmt[x], int_nums[y]);
731 			sprintf(buf2, int_fmt[x], int_nums[y]);
732 			if (strcmp (buf1, buf2)) {
733 				printf("snprintf doesn't match Format: %s\n\t"
734 				       "snprintf = %s\n\tsprintf  = %s\n",
735 					int_fmt[x], buf1, buf2);
736 				fail++;
737 			}
738 			num++;
739 		}
740 	}
741 	printf("%d tests failed out of %d.\n", fail, num);
742 	return(0);
743 }
744 #endif /* SNPRINTF_TEST */
745 
746 #endif /* !HAVE_SNPRINTF */
747