forked from OpenSCAP/openscap
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathprintf.m4
1570 lines (1529 loc) · 59.2 KB
/
printf.m4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
# printf.m4 serial 51
dnl Copyright (C) 2003, 2007-2014 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl Test whether the *printf family of functions supports the 'j', 'z', 't',
dnl 'L' size specifiers. (ISO C99, POSIX:2001)
dnl Result is gl_cv_func_printf_sizes_c99.
AC_DEFUN([gl_PRINTF_SIZES_C99],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([gl_AC_HEADER_STDINT_H])
AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports size specifiers as in C99],
[gl_cv_func_printf_sizes_c99],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#if HAVE_STDINT_H_WITH_UINTMAX
# include <stdint.h>
#endif
#if HAVE_INTTYPES_H_WITH_UINTMAX
# include <inttypes.h>
#endif
static char buf[100];
int main ()
{
int result = 0;
#if HAVE_STDINT_H_WITH_UINTMAX || HAVE_INTTYPES_H_WITH_UINTMAX
buf[0] = '\0';
if (sprintf (buf, "%ju %d", (uintmax_t) 12345671, 33, 44, 55) < 0
|| strcmp (buf, "12345671 33") != 0)
result |= 1;
#endif
buf[0] = '\0';
if (sprintf (buf, "%zu %d", (size_t) 12345672, 33, 44, 55) < 0
|| strcmp (buf, "12345672 33") != 0)
result |= 2;
buf[0] = '\0';
if (sprintf (buf, "%tu %d", (ptrdiff_t) 12345673, 33, 44, 55) < 0
|| strcmp (buf, "12345673 33") != 0)
result |= 4;
buf[0] = '\0';
if (sprintf (buf, "%Lg %d", (long double) 1.5, 33, 44, 55) < 0
|| strcmp (buf, "1.5 33") != 0)
result |= 8;
return result;
}]])],
[gl_cv_func_printf_sizes_c99=yes],
[gl_cv_func_printf_sizes_c99=no],
[
changequote(,)dnl
case "$host_os" in
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_printf_sizes_c99="guessing yes";;
# Guess yes on FreeBSD >= 5.
freebsd[1-4].*) gl_cv_func_printf_sizes_c99="guessing no";;
freebsd* | kfreebsd*) gl_cv_func_printf_sizes_c99="guessing yes";;
# Guess yes on Mac OS X >= 10.3.
darwin[1-6].*) gl_cv_func_printf_sizes_c99="guessing no";;
darwin*) gl_cv_func_printf_sizes_c99="guessing yes";;
# Guess yes on OpenBSD >= 3.9.
openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*)
gl_cv_func_printf_sizes_c99="guessing no";;
openbsd*) gl_cv_func_printf_sizes_c99="guessing yes";;
# Guess yes on Solaris >= 2.10.
solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";;
solaris*) gl_cv_func_printf_sizes_c99="guessing no";;
# Guess yes on NetBSD >= 3.
netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
gl_cv_func_printf_sizes_c99="guessing no";;
netbsd*) gl_cv_func_printf_sizes_c99="guessing yes";;
# If we don't know, assume the worst.
*) gl_cv_func_printf_sizes_c99="guessing no";;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions supports 'long double'
dnl arguments together with the 'L' size specifier. (ISO C99, POSIX:2001)
dnl Result is gl_cv_func_printf_long_double.
AC_DEFUN([gl_PRINTF_LONG_DOUBLE],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports 'long double' arguments],
[gl_cv_func_printf_long_double],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
static char buf[10000];
int main ()
{
int result = 0;
buf[0] = '\0';
if (sprintf (buf, "%Lf %d", 1.75L, 33, 44, 55) < 0
|| strcmp (buf, "1.750000 33") != 0)
result |= 1;
buf[0] = '\0';
if (sprintf (buf, "%Le %d", 1.75L, 33, 44, 55) < 0
|| strcmp (buf, "1.750000e+00 33") != 0)
result |= 2;
buf[0] = '\0';
if (sprintf (buf, "%Lg %d", 1.75L, 33, 44, 55) < 0
|| strcmp (buf, "1.75 33") != 0)
result |= 4;
return result;
}]])],
[gl_cv_func_printf_long_double=yes],
[gl_cv_func_printf_long_double=no],
[
changequote(,)dnl
case "$host_os" in
beos*) gl_cv_func_printf_long_double="guessing no";;
mingw* | pw*) gl_cv_func_printf_long_double="guessing no";;
*) gl_cv_func_printf_long_double="guessing yes";;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions supports infinite and NaN
dnl 'double' arguments and negative zero arguments in the %f, %e, %g
dnl directives. (ISO C99, POSIX:2001)
dnl Result is gl_cv_func_printf_infinite.
AC_DEFUN([gl_PRINTF_INFINITE],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports infinite 'double' arguments],
[gl_cv_func_printf_infinite],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
static int
strisnan (const char *string, size_t start_index, size_t end_index)
{
if (start_index < end_index)
{
if (string[start_index] == '-')
start_index++;
if (start_index + 3 <= end_index
&& memcmp (string + start_index, "nan", 3) == 0)
{
start_index += 3;
if (start_index == end_index
|| (string[start_index] == '(' && string[end_index - 1] == ')'))
return 1;
}
}
return 0;
}
static int
have_minus_zero ()
{
static double plus_zero = 0.0;
double minus_zero = - plus_zero;
return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
}
static char buf[10000];
static double zero = 0.0;
int main ()
{
int result = 0;
if (sprintf (buf, "%f", 1.0 / zero) < 0
|| (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
result |= 1;
if (sprintf (buf, "%f", -1.0 / zero) < 0
|| (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
result |= 1;
if (sprintf (buf, "%f", zero / zero) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 2;
if (sprintf (buf, "%e", 1.0 / zero) < 0
|| (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
result |= 4;
if (sprintf (buf, "%e", -1.0 / zero) < 0
|| (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
result |= 4;
if (sprintf (buf, "%e", zero / zero) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 8;
if (sprintf (buf, "%g", 1.0 / zero) < 0
|| (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
result |= 16;
if (sprintf (buf, "%g", -1.0 / zero) < 0
|| (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
result |= 16;
if (sprintf (buf, "%g", zero / zero) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 32;
/* This test fails on HP-UX 10.20. */
if (have_minus_zero ())
if (sprintf (buf, "%g", - zero) < 0
|| strcmp (buf, "-0") != 0)
result |= 64;
return result;
}]])],
[gl_cv_func_printf_infinite=yes],
[gl_cv_func_printf_infinite=no],
[
changequote(,)dnl
case "$host_os" in
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_printf_infinite="guessing yes";;
# Guess yes on FreeBSD >= 6.
freebsd[1-5].*) gl_cv_func_printf_infinite="guessing no";;
freebsd* | kfreebsd*) gl_cv_func_printf_infinite="guessing yes";;
# Guess yes on Mac OS X >= 10.3.
darwin[1-6].*) gl_cv_func_printf_infinite="guessing no";;
darwin*) gl_cv_func_printf_infinite="guessing yes";;
# Guess yes on HP-UX >= 11.
hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite="guessing no";;
hpux*) gl_cv_func_printf_infinite="guessing yes";;
# Guess yes on NetBSD >= 3.
netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
gl_cv_func_printf_infinite="guessing no";;
netbsd*) gl_cv_func_printf_infinite="guessing yes";;
# Guess yes on BeOS.
beos*) gl_cv_func_printf_infinite="guessing yes";;
# If we don't know, assume the worst.
*) gl_cv_func_printf_infinite="guessing no";;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions supports infinite and NaN
dnl 'long double' arguments in the %f, %e, %g directives. (ISO C99, POSIX:2001)
dnl Result is gl_cv_func_printf_infinite_long_double.
AC_DEFUN([gl_PRINTF_INFINITE_LONG_DOUBLE],
[
AC_REQUIRE([gl_PRINTF_LONG_DOUBLE])
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([gl_BIGENDIAN])
AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
dnl The user can set or unset the variable gl_printf_safe to indicate
dnl that he wishes a safe handling of non-IEEE-754 'long double' values.
if test -n "$gl_printf_safe"; then
AC_DEFINE([CHECK_PRINTF_SAFE], [1],
[Define if you wish *printf() functions that have a safe handling of
non-IEEE-754 'long double' values.])
fi
case "$gl_cv_func_printf_long_double" in
*yes)
AC_CACHE_CHECK([whether printf supports infinite 'long double' arguments],
[gl_cv_func_printf_infinite_long_double],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
]GL_NOCRASH[
#include <float.h>
#include <stdio.h>
#include <string.h>
static int
strisnan (const char *string, size_t start_index, size_t end_index)
{
if (start_index < end_index)
{
if (string[start_index] == '-')
start_index++;
if (start_index + 3 <= end_index
&& memcmp (string + start_index, "nan", 3) == 0)
{
start_index += 3;
if (start_index == end_index
|| (string[start_index] == '(' && string[end_index - 1] == ')'))
return 1;
}
}
return 0;
}
static char buf[10000];
static long double zeroL = 0.0L;
int main ()
{
int result = 0;
nocrash_init();
if (sprintf (buf, "%Lf", 1.0L / zeroL) < 0
|| (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
result |= 1;
if (sprintf (buf, "%Lf", -1.0L / zeroL) < 0
|| (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
result |= 1;
if (sprintf (buf, "%Lf", zeroL / zeroL) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 1;
if (sprintf (buf, "%Le", 1.0L / zeroL) < 0
|| (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
result |= 1;
if (sprintf (buf, "%Le", -1.0L / zeroL) < 0
|| (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
result |= 1;
if (sprintf (buf, "%Le", zeroL / zeroL) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 1;
if (sprintf (buf, "%Lg", 1.0L / zeroL) < 0
|| (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
result |= 1;
if (sprintf (buf, "%Lg", -1.0L / zeroL) < 0
|| (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0))
result |= 1;
if (sprintf (buf, "%Lg", zeroL / zeroL) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 1;
#if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
/* Representation of an 80-bit 'long double' as an initializer for a sequence
of 'unsigned int' words. */
# ifdef WORDS_BIGENDIAN
# define LDBL80_WORDS(exponent,manthi,mantlo) \
{ ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \
((unsigned int) (manthi) << 16) | (unsigned int) (mantlo) >> 16), \
(unsigned int) (mantlo) << 16 \
}
# else
# define LDBL80_WORDS(exponent,manthi,mantlo) \
{ mantlo, manthi, exponent }
# endif
{ /* Quiet NaN. */
static union { unsigned int word[4]; long double value; } x =
{ LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
if (sprintf (buf, "%Lf", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 2;
if (sprintf (buf, "%Le", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 2;
if (sprintf (buf, "%Lg", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 2;
}
{
/* Signalling NaN. */
static union { unsigned int word[4]; long double value; } x =
{ LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
if (sprintf (buf, "%Lf", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 2;
if (sprintf (buf, "%Le", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 2;
if (sprintf (buf, "%Lg", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 2;
}
{ /* Pseudo-NaN. */
static union { unsigned int word[4]; long double value; } x =
{ LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
if (sprintf (buf, "%Lf", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 4;
if (sprintf (buf, "%Le", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 4;
if (sprintf (buf, "%Lg", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 4;
}
{ /* Pseudo-Infinity. */
static union { unsigned int word[4]; long double value; } x =
{ LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
if (sprintf (buf, "%Lf", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 8;
if (sprintf (buf, "%Le", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 8;
if (sprintf (buf, "%Lg", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 8;
}
{ /* Pseudo-Zero. */
static union { unsigned int word[4]; long double value; } x =
{ LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
if (sprintf (buf, "%Lf", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 16;
if (sprintf (buf, "%Le", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 16;
if (sprintf (buf, "%Lg", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 16;
}
{ /* Unnormalized number. */
static union { unsigned int word[4]; long double value; } x =
{ LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
if (sprintf (buf, "%Lf", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 32;
if (sprintf (buf, "%Le", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 32;
if (sprintf (buf, "%Lg", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 32;
}
{ /* Pseudo-Denormal. */
static union { unsigned int word[4]; long double value; } x =
{ LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
if (sprintf (buf, "%Lf", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 64;
if (sprintf (buf, "%Le", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 64;
if (sprintf (buf, "%Lg", x.value) < 0
|| !strisnan (buf, 0, strlen (buf)))
result |= 64;
}
#endif
return result;
}]])],
[gl_cv_func_printf_infinite_long_double=yes],
[gl_cv_func_printf_infinite_long_double=no],
[
changequote(,)dnl
case "$host_cpu" in
# Guess no on ia64, x86_64, i386.
ia64 | x86_64 | i*86) gl_cv_func_printf_infinite_long_double="guessing no";;
*)
case "$host_os" in
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_printf_infinite_long_double="guessing yes";;
# Guess yes on FreeBSD >= 6.
freebsd[1-5].*) gl_cv_func_printf_infinite_long_double="guessing no";;
freebsd* | kfreebsd*) gl_cv_func_printf_infinite_long_double="guessing yes";;
# Guess yes on HP-UX >= 11.
hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite_long_double="guessing no";;
hpux*) gl_cv_func_printf_infinite_long_double="guessing yes";;
# If we don't know, assume the worst.
*) gl_cv_func_printf_infinite_long_double="guessing no";;
esac
;;
esac
changequote([,])dnl
])
])
;;
*)
gl_cv_func_printf_infinite_long_double="irrelevant"
;;
esac
])
dnl Test whether the *printf family of functions supports the 'a' and 'A'
dnl conversion specifier for hexadecimal output of floating-point numbers.
dnl (ISO C99, POSIX:2001)
dnl Result is gl_cv_func_printf_directive_a.
AC_DEFUN([gl_PRINTF_DIRECTIVE_A],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports the 'a' and 'A' directives],
[gl_cv_func_printf_directive_a],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
static char buf[100];
static double zero = 0.0;
int main ()
{
int result = 0;
if (sprintf (buf, "%a %d", 3.1416015625, 33, 44, 55) < 0
|| (strcmp (buf, "0x1.922p+1 33") != 0
&& strcmp (buf, "0x3.244p+0 33") != 0
&& strcmp (buf, "0x6.488p-1 33") != 0
&& strcmp (buf, "0xc.91p-2 33") != 0))
result |= 1;
if (sprintf (buf, "%A %d", -3.1416015625, 33, 44, 55) < 0
|| (strcmp (buf, "-0X1.922P+1 33") != 0
&& strcmp (buf, "-0X3.244P+0 33") != 0
&& strcmp (buf, "-0X6.488P-1 33") != 0
&& strcmp (buf, "-0XC.91P-2 33") != 0))
result |= 2;
/* This catches a FreeBSD 6.1 bug: it doesn't round. */
if (sprintf (buf, "%.2a %d", 1.51, 33, 44, 55) < 0
|| (strcmp (buf, "0x1.83p+0 33") != 0
&& strcmp (buf, "0x3.05p-1 33") != 0
&& strcmp (buf, "0x6.0ap-2 33") != 0
&& strcmp (buf, "0xc.14p-3 33") != 0))
result |= 4;
/* This catches a FreeBSD 6.1 bug. See
<http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */
if (sprintf (buf, "%010a %d", 1.0 / zero, 33, 44, 55) < 0
|| buf[0] == '0')
result |= 8;
/* This catches a Mac OS X 10.3.9 (Darwin 7.9) bug. */
if (sprintf (buf, "%.1a", 1.999) < 0
|| (strcmp (buf, "0x1.0p+1") != 0
&& strcmp (buf, "0x2.0p+0") != 0
&& strcmp (buf, "0x4.0p-1") != 0
&& strcmp (buf, "0x8.0p-2") != 0))
result |= 16;
/* This catches the same Mac OS X 10.3.9 (Darwin 7.9) bug and also a
glibc 2.4 bug <http://sourceware.org/bugzilla/show_bug.cgi?id=2908>. */
if (sprintf (buf, "%.1La", 1.999L) < 0
|| (strcmp (buf, "0x1.0p+1") != 0
&& strcmp (buf, "0x2.0p+0") != 0
&& strcmp (buf, "0x4.0p-1") != 0
&& strcmp (buf, "0x8.0p-2") != 0))
result |= 32;
return result;
}]])],
[gl_cv_func_printf_directive_a=yes],
[gl_cv_func_printf_directive_a=no],
[
case "$host_os" in
# Guess yes on glibc >= 2.5 systems.
*-gnu*)
AC_EGREP_CPP([BZ2908], [
#include <features.h>
#ifdef __GNU_LIBRARY__
#if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 5) || (__GLIBC__ > 2)) && !defined __UCLIBC__
BZ2908
#endif
#endif
],
[gl_cv_func_printf_directive_a="guessing yes"],
[gl_cv_func_printf_directive_a="guessing no"])
;;
# If we don't know, assume the worst.
*) gl_cv_func_printf_directive_a="guessing no";;
esac
])
])
])
dnl Test whether the *printf family of functions supports the %F format
dnl directive. (ISO C99, POSIX:2001)
dnl Result is gl_cv_func_printf_directive_f.
AC_DEFUN([gl_PRINTF_DIRECTIVE_F],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports the 'F' directive],
[gl_cv_func_printf_directive_f],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
static char buf[100];
static double zero = 0.0;
int main ()
{
int result = 0;
if (sprintf (buf, "%F %d", 1234567.0, 33, 44, 55) < 0
|| strcmp (buf, "1234567.000000 33") != 0)
result |= 1;
if (sprintf (buf, "%F", 1.0 / zero) < 0
|| (strcmp (buf, "INF") != 0 && strcmp (buf, "INFINITY") != 0))
result |= 2;
/* This catches a Cygwin 1.5.x bug. */
if (sprintf (buf, "%.F", 1234.0) < 0
|| strcmp (buf, "1234") != 0)
result |= 4;
return result;
}]])],
[gl_cv_func_printf_directive_f=yes],
[gl_cv_func_printf_directive_f=no],
[
changequote(,)dnl
case "$host_os" in
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_printf_directive_f="guessing yes";;
# Guess yes on FreeBSD >= 6.
freebsd[1-5].*) gl_cv_func_printf_directive_f="guessing no";;
freebsd* | kfreebsd*) gl_cv_func_printf_directive_f="guessing yes";;
# Guess yes on Mac OS X >= 10.3.
darwin[1-6].*) gl_cv_func_printf_directive_f="guessing no";;
darwin*) gl_cv_func_printf_directive_f="guessing yes";;
# Guess yes on Solaris >= 2.10.
solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";;
solaris*) gl_cv_func_printf_sizes_c99="guessing no";;
# If we don't know, assume the worst.
*) gl_cv_func_printf_directive_f="guessing no";;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions supports the %n format
dnl directive. (ISO C99, POSIX:2001)
dnl Result is gl_cv_func_printf_directive_n.
AC_DEFUN([gl_PRINTF_DIRECTIVE_N],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports the 'n' directive],
[gl_cv_func_printf_directive_n],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef _MSC_VER
/* See page about "Parameter Validation" on msdn.microsoft.com. */
static void cdecl
invalid_parameter_handler (const wchar_t *expression,
const wchar_t *function,
const wchar_t *file, unsigned int line,
uintptr_t dummy)
{
exit (1);
}
#endif
static char fmtstring[10];
static char buf[100];
int main ()
{
int count = -1;
#ifdef _MSC_VER
_set_invalid_parameter_handler (invalid_parameter_handler);
#endif
/* Copy the format string. Some systems (glibc with _FORTIFY_SOURCE=2)
support %n in format strings in read-only memory but not in writable
memory. */
strcpy (fmtstring, "%d %n");
if (sprintf (buf, fmtstring, 123, &count, 33, 44, 55) < 0
|| strcmp (buf, "123 ") != 0
|| count != 4)
return 1;
return 0;
}]])],
[gl_cv_func_printf_directive_n=yes],
[gl_cv_func_printf_directive_n=no],
[
changequote(,)dnl
case "$host_os" in
mingw*) gl_cv_func_printf_directive_n="guessing no";;
*) gl_cv_func_printf_directive_n="guessing yes";;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions supports the %ls format
dnl directive and in particular, when a precision is specified, whether
dnl the functions stop converting the wide string argument when the number
dnl of bytes that have been produced by this conversion equals or exceeds
dnl the precision.
dnl Result is gl_cv_func_printf_directive_ls.
AC_DEFUN([gl_PRINTF_DIRECTIVE_LS],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports the 'ls' directive],
[gl_cv_func_printf_directive_ls],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
<wchar.h>.
BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
included before <wchar.h>. */
#include <stddef.h>
#include <stdio.h>
#include <time.h>
#include <wchar.h>
#include <string.h>
int main ()
{
int result = 0;
char buf[100];
/* Test whether %ls works at all.
This test fails on OpenBSD 4.0, IRIX 6.5, Solaris 2.6, Haiku, but not on
Cygwin 1.5. */
{
static const wchar_t wstring[] = { 'a', 'b', 'c', 0 };
buf[0] = '\0';
if (sprintf (buf, "%ls", wstring) < 0
|| strcmp (buf, "abc") != 0)
result |= 1;
}
/* This test fails on IRIX 6.5, Solaris 2.6, Cygwin 1.5, Haiku (with an
assertion failure inside libc), but not on OpenBSD 4.0. */
{
static const wchar_t wstring[] = { 'a', 0 };
buf[0] = '\0';
if (sprintf (buf, "%ls", wstring) < 0
|| strcmp (buf, "a") != 0)
result |= 2;
}
/* Test whether precisions in %ls are supported as specified in ISO C 99
section 7.19.6.1:
"If a precision is specified, no more than that many bytes are written
(including shift sequences, if any), and the array shall contain a
null wide character if, to equal the multibyte character sequence
length given by the precision, the function would need to access a
wide character one past the end of the array."
This test fails on Solaris 10. */
{
static const wchar_t wstring[] = { 'a', 'b', (wchar_t) 0xfdfdfdfd, 0 };
buf[0] = '\0';
if (sprintf (buf, "%.2ls", wstring) < 0
|| strcmp (buf, "ab") != 0)
result |= 8;
}
return result;
}]])],
[gl_cv_func_printf_directive_ls=yes],
[gl_cv_func_printf_directive_ls=no],
[
changequote(,)dnl
case "$host_os" in
openbsd*) gl_cv_func_printf_directive_ls="guessing no";;
irix*) gl_cv_func_printf_directive_ls="guessing no";;
solaris*) gl_cv_func_printf_directive_ls="guessing no";;
cygwin*) gl_cv_func_printf_directive_ls="guessing no";;
beos* | haiku*) gl_cv_func_printf_directive_ls="guessing no";;
*) gl_cv_func_printf_directive_ls="guessing yes";;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions supports POSIX/XSI format
dnl strings with positions. (POSIX:2001)
dnl Result is gl_cv_func_printf_positions.
AC_DEFUN([gl_PRINTF_POSITIONS],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports POSIX/XSI format strings with positions],
[gl_cv_func_printf_positions],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
/* The string "%2$d %1$d", with dollar characters protected from the shell's
dollar expansion (possibly an autoconf bug). */
static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' };
static char buf[100];
int main ()
{
sprintf (buf, format, 33, 55);
return (strcmp (buf, "55 33") != 0);
}]])],
[gl_cv_func_printf_positions=yes],
[gl_cv_func_printf_positions=no],
[
changequote(,)dnl
case "$host_os" in
netbsd[1-3]* | netbsdelf[1-3]* | netbsdaout[1-3]* | netbsdcoff[1-3]*)
gl_cv_func_printf_positions="guessing no";;
beos*) gl_cv_func_printf_positions="guessing no";;
mingw* | pw*) gl_cv_func_printf_positions="guessing no";;
*) gl_cv_func_printf_positions="guessing yes";;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions supports POSIX/XSI format
dnl strings with the ' flag for grouping of decimal digits. (POSIX:2001)
dnl Result is gl_cv_func_printf_flag_grouping.
AC_DEFUN([gl_PRINTF_FLAG_GROUPING],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports the grouping flag],
[gl_cv_func_printf_flag_grouping],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
static char buf[100];
int main ()
{
if (sprintf (buf, "%'d %d", 1234567, 99) < 0
|| buf[strlen (buf) - 1] != '9')
return 1;
return 0;
}]])],
[gl_cv_func_printf_flag_grouping=yes],
[gl_cv_func_printf_flag_grouping=no],
[
changequote(,)dnl
case "$host_os" in
cygwin*) gl_cv_func_printf_flag_grouping="guessing no";;
netbsd*) gl_cv_func_printf_flag_grouping="guessing no";;
mingw* | pw*) gl_cv_func_printf_flag_grouping="guessing no";;
*) gl_cv_func_printf_flag_grouping="guessing yes";;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions supports the - flag correctly.
dnl (ISO C99.) See
dnl <http://lists.gnu.org/archive/html/bug-coreutils/2008-02/msg00035.html>
dnl Result is gl_cv_func_printf_flag_leftadjust.
AC_DEFUN([gl_PRINTF_FLAG_LEFTADJUST],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports the left-adjust flag correctly],
[gl_cv_func_printf_flag_leftadjust],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
static char buf[100];
int main ()
{
/* Check that a '-' flag is not annihilated by a negative width. */
if (sprintf (buf, "a%-*sc", -3, "b") < 0
|| strcmp (buf, "ab c") != 0)
return 1;
return 0;
}]])],
[gl_cv_func_printf_flag_leftadjust=yes],
[gl_cv_func_printf_flag_leftadjust=no],
[
changequote(,)dnl
case "$host_os" in
# Guess yes on HP-UX 11.
hpux11*) gl_cv_func_printf_flag_leftadjust="guessing yes";;
# Guess no on HP-UX 10 and older.
hpux*) gl_cv_func_printf_flag_leftadjust="guessing no";;
# Guess yes otherwise.
*) gl_cv_func_printf_flag_leftadjust="guessing yes";;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions supports padding of non-finite
dnl values with the 0 flag correctly. (ISO C99 + TC1 + TC2.) See
dnl <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html>
dnl Result is gl_cv_func_printf_flag_zero.
AC_DEFUN([gl_PRINTF_FLAG_ZERO],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports the zero flag correctly],
[gl_cv_func_printf_flag_zero],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
static char buf[100];
static double zero = 0.0;
int main ()
{
if (sprintf (buf, "%010f", 1.0 / zero, 33, 44, 55) < 0
|| (strcmp (buf, " inf") != 0
&& strcmp (buf, " infinity") != 0))
return 1;
return 0;
}]])],
[gl_cv_func_printf_flag_zero=yes],
[gl_cv_func_printf_flag_zero=no],
[
changequote(,)dnl
case "$host_os" in
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_printf_flag_zero="guessing yes";;
# Guess yes on BeOS.
beos*) gl_cv_func_printf_flag_zero="guessing yes";;
# If we don't know, assume the worst.
*) gl_cv_func_printf_flag_zero="guessing no";;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions supports large precisions.
dnl On mingw, precisions larger than 512 are treated like 512, in integer,
dnl floating-point or pointer output. On Solaris 10/x86, precisions larger
dnl than 510 in floating-point output crash the program. On Solaris 10/SPARC,
dnl precisions larger than 510 in floating-point output yield wrong results.
dnl On AIX 7.1, precisions larger than 998 in floating-point output yield
dnl wrong results. On BeOS, precisions larger than 1044 crash the program.
dnl Result is gl_cv_func_printf_precision.
AC_DEFUN([gl_PRINTF_PRECISION],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf supports large precisions],
[gl_cv_func_printf_precision],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
static char buf[5000];
int main ()
{
int result = 0;
#ifdef __BEOS__
/* On BeOS, this would crash and show a dialog box. Avoid the crash. */
return 1;
#endif
if (sprintf (buf, "%.4000d %d", 1, 33, 44) < 4000 + 3)
result |= 1;
if (sprintf (buf, "%.4000f %d", 1.0, 33, 44) < 4000 + 5)
result |= 2;
if (sprintf (buf, "%.511f %d", 1.0, 33, 44) < 511 + 5
|| buf[0] != '1')
result |= 4;
if (sprintf (buf, "%.999f %d", 1.0, 33, 44) < 999 + 5
|| buf[0] != '1')
result |= 4;
return result;
}]])],
[gl_cv_func_printf_precision=yes],
[gl_cv_func_printf_precision=no],
[
changequote(,)dnl
case "$host_os" in
# Guess no only on Solaris, native Windows, and BeOS systems.
solaris*) gl_cv_func_printf_precision="guessing no" ;;
mingw* | pw*) gl_cv_func_printf_precision="guessing no" ;;
beos*) gl_cv_func_printf_precision="guessing no" ;;
*) gl_cv_func_printf_precision="guessing yes" ;;
esac
changequote([,])dnl
])
])
])
dnl Test whether the *printf family of functions recovers gracefully in case
dnl of an out-of-memory condition, or whether it crashes the entire program.
dnl Result is gl_cv_func_printf_enomem.
AC_DEFUN([gl_PRINTF_ENOMEM],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([gl_MULTIARCH])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether printf survives out-of-memory conditions],
[gl_cv_func_printf_enomem],
[
gl_cv_func_printf_enomem="guessing no"
if test "$cross_compiling" = no; then
if test $APPLE_UNIVERSAL_BUILD = 0; then
AC_LANG_CONFTEST([AC_LANG_SOURCE([
]GL_NOCRASH[
changequote(,)dnl
#include <stdio.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <errno.h>
int main()
{
struct rlimit limit;
int ret;
nocrash_init ();
/* Some printf implementations allocate temporary space with malloc. */
/* On BSD systems, malloc() is limited by RLIMIT_DATA. */
#ifdef RLIMIT_DATA
if (getrlimit (RLIMIT_DATA, &limit) < 0)
return 77;
if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000)
limit.rlim_max = 5000000;