summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/arm/bits/string2.h
blob: e2e5c0053d478aa06708e5a0924955d1221cf49a (plain)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
/* Machine-independant string function optimizations.
   Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef _STRING_H
# error "Never use <bits/string2.h> directly; include <string.h> instead."
#endif

#if !defined __NO_STRING_INLINES && !defined __BOUNDED_POINTERS__

/* Unlike the definitions in the header <bits/string.h> the
   definitions contained here are not optimized down to assembler
   level.  Those optimizations are not always a good idea since this
   means the code size increases a lot.  Instead the definitions here
   optimize some functions in a way which do not dramatically
   increase the code size and which do not use assembler.  The main
   trick is to use GNU CC's `__builtin_constant_p' function.

   Every function XXX which has a defined version in
   <bits/string.h> must be accompanied by a symbol _HAVE_STRING_ARCH_XXX
   to make sure we don't get redefinitions.

   We must use here macros instead of inline functions since the
   trick won't work with the latter.  */

#ifndef __STRING_INLINE
# ifdef __cplusplus
#  define __STRING_INLINE inline
# else
#  define __STRING_INLINE extern __inline
# endif
#endif

#if _STRING_ARCH_unaligned
/* If we can do unaligned memory accesses we must know the endianess.  */
# include <endian.h>
# include <bits/types.h>

# if __BYTE_ORDER == __LITTLE_ENDIAN
#  define __STRING2_SMALL_GET16(src, idx) \
     (((__const unsigned char *) (__const char *) (src))[idx + 1] << 8	      \
      | ((__const unsigned char *) (__const char *) (src))[idx])
#  define __STRING2_SMALL_GET32(src, idx) \
     (((((__const unsigned char *) (__const char *) (src))[idx + 3] << 8      \
	| ((__const unsigned char *) (__const char *) (src))[idx + 2]) << 8   \
       | ((__const unsigned char *) (__const char *) (src))[idx + 1]) << 8    \
      | ((__const unsigned char *) (__const char *) (src))[idx])
# else
#  define __STRING2_SMALL_GET16(src, idx) \
     (((__const unsigned char *) (__const char *) (src))[idx] << 8	      \
      | ((__const unsigned char *) (__const char *) (src))[idx + 1])
#  define __STRING2_SMALL_GET32(src, idx) \
     (((((__const unsigned char *) (__const char *) (src))[idx] << 8	      \
	| ((__const unsigned char *) (__const char *) (src))[idx + 1]) << 8   \
       | ((__const unsigned char *) (__const char *) (src))[idx + 2]) << 8    \
      | ((__const unsigned char *) (__const char *) (src))[idx + 3])
# endif
#else
/* These are a few types we need for the optimizations if we cannot
   use unaligned memory accesses.  */
# define __STRING2_COPY_TYPE(N) \
  typedef struct { unsigned char __arr[N]; }				      \
    __STRING2_COPY_ARR##N __attribute__ ((packed))
__STRING2_COPY_TYPE (2);
__STRING2_COPY_TYPE (3);
__STRING2_COPY_TYPE (4);
__STRING2_COPY_TYPE (5);
__STRING2_COPY_TYPE (6);
__STRING2_COPY_TYPE (7);
__STRING2_COPY_TYPE (8);
# undef __STRING2_COPY_TYPE
#endif

/* Dereferencing a pointer arg to run sizeof on it fails for the void
   pointer case, so we use this instead.
   Note that __x is evaluated twice. */
#define __string2_1bptr_p(__x) \
  ((size_t)(const void *)((__x) + 1) - (size_t)(const void *)(__x) == 1)

/* Set N bytes of S to C.  */
#ifndef _HAVE_STRING_ARCH_memset
# if _STRING_ARCH_unaligned
#  define memset(s, c, n) \
  (__extension__ (__builtin_constant_p (n) && (n) <= 16			      \
		  ? ((n) == 1						      \
		     ? __memset_1 (s, c)				      \
		     : __memset_gc (s, c, n))				      \
		  : (__builtin_constant_p (c) && (c) == '\0'		      \
		     ? ({ void *__s = (s); __bzero (__s, n); __s; })	      \
		     : memset (s, c, n))))

#  define __memset_1(s, c) ({ void *__s = (s);				      \
			    *((__uint8_t *) __s) = (__uint8_t) c; __s; })

#  define __memset_gc(s, c, n) \
  ({ void *__s = (s);							      \
     union {								      \
       unsigned int __ui;						      \
       unsigned short int __usi;					      \
       unsigned char __uc;						      \
     } *__u = __s;							      \
     __uint8_t __c = (__uint8_t) (c);					      \
									      \
     /* This `switch' statement will be removed at compile-time.  */	      \
     switch ((unsigned int) (n))					      \
       {								      \
       case 15:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 11:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 7:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 3:								      \
	 __u->__usi = (unsigned short int) __c * 0x0101;		      \
	 __u = __extension__ (void *)((char *) __u + 2);		      \
	 __u->__uc = (unsigned char) __c;				      \
	 break;								      \
									      \
       case 14:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 10:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 6:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 2:								      \
	 __u->__usi = (unsigned short int) __c * 0x0101;		      \
	 break;								      \
									      \
       case 13:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 9:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 5:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 1:								      \
	 __u->__uc = (unsigned char) __c;				      \
	 break;								      \
									      \
       case 16:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 12:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 8:								      \
	 __u->__ui = __c * 0x01010101;					      \
	 __u = __extension__ (void *)((char *) __u + 4);		      \
       case 4:								      \
	 __u->__ui = __c * 0x01010101;					      \
       case 0:								      \
	 break;								      \
       }								      \
									      \
     __s; })
# else
#  define memset(s, c, n) \
  (__extension__ (__builtin_constant_p (c) && (c) == '\0'		      \
		  ? ({ void *__s = (s); __bzero (__s, n); __s; })	      \
		  : memset (s, c, n)))
# endif

/* GCC optimizes memset(s, 0, n) but not bzero(s, n).
   The optimization is broken before EGCS 1.1.  */
# if __GNUC_PREREQ (2, 91)
#  define __bzero(s, n) __builtin_memset (s, '\0', n)
# endif

#endif


/* Copy N bytes from SRC to DEST, returning pointer to byte following the
   last copied.  */
#ifdef __USE_GNU
# ifndef _HAVE_STRING_ARCH_mempcpy
#  define __mempcpy(dest, src, n) \
  (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
		  && __string2_1bptr_p (src) && n <= 8			      \
		  ? __mempcpy_small (dest, __mempcpy_args (src), n)	      \
		  : __mempcpy (dest, src, n)))
/* In glibc we use this function frequently but for namespace reasons
   we have to use the name `__mempcpy'.  */
#  define mempcpy(dest, src, n) __mempcpy (dest, src, n)

#  if _STRING_ARCH_unaligned
#   define __mempcpy_args(src) \
     ((__const char *) (src))[0], ((__const char *) (src))[2],		      \
     ((__const char *) (src))[4], ((__const char *) (src))[6],		      \
     __extension__ __STRING2_SMALL_GET16 (src, 0),			      \
     __extension__ __STRING2_SMALL_GET16 (src, 4),			      \
     __extension__ __STRING2_SMALL_GET32 (src, 0),			      \
     __extension__ __STRING2_SMALL_GET32 (src, 4)
__STRING_INLINE void *__mempcpy_small (void *, char, char, char, char,
				       __uint16_t, __uint16_t, __uint32_t,
				       __uint32_t, size_t);
__STRING_INLINE void *
__mempcpy_small (void *__dest1,
		 char __src0_1, char __src2_1, char __src4_1, char __src6_1,
		 __uint16_t __src0_2, __uint16_t __src4_2,
		 __uint32_t __src0_4, __uint32_t __src4_4,
		 size_t __srclen)
{
  union {
    __uint32_t __ui;
    __uint16_t __usi;
    unsigned char __uc;
    unsigned char __c;
  } *__u = __dest1;
  switch ((unsigned int) __srclen)
    {
    case 1:
      __u->__c = __src0_1;
      __u = __extension__ (void *)((char *) __u + 1);
      break;
    case 2:
      __u->__usi = __src0_2;
      __u = __extension__ (void *)((char *) __u + 2);
      break;
    case 3:
      __u->__usi = __src0_2;
      __u = __extension__ (void *)((char *) __u + 2);
      __u->__c = __src2_1;
      __u = __extension__ (void *)((char *) __u + 1);
      break;
    case 4:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      break;
    case 5:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__c = __src4_1;
      __u = __extension__ (void *)((char *) __u + 1);
      break;
    case 6:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__usi = __src4_2;
      __u = __extension__ (void *)((char *) __u + 2);
      break;
    case 7:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__usi = __src4_2;
      __u = __extension__ (void *)((char *) __u + 2);
      __u->__c = __src6_1;
      __u = __extension__ (void *)((char *) __u + 1);
      break;
    case 8:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__ui = __src4_4;
      __u = __extension__ (void *)((char *) __u + 4);
      break;
    }
  return (void *) __u;
}
#  else
#   define __mempcpy_args(src) \
     ((__const char *) (src))[0],					      \
     __extension__ ((__STRING2_COPY_ARR2)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1] } }),      \
     __extension__ ((__STRING2_COPY_ARR3)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2] } }),				      \
     __extension__ ((__STRING2_COPY_ARR4)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3] } }),      \
     __extension__ ((__STRING2_COPY_ARR5)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  ((__const char *) (src))[4] } }),				      \
     __extension__ ((__STRING2_COPY_ARR6)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  ((__const char *) (src))[4], ((__const char *) (src))[5] } }),      \
     __extension__ ((__STRING2_COPY_ARR7)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  ((__const char *) (src))[4], ((__const char *) (src))[5],	      \
	  ((__const char *) (src))[6] } }),				      \
     __extension__ ((__STRING2_COPY_ARR8)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  ((__const char *) (src))[4], ((__const char *) (src))[5],	      \
	  ((__const char *) (src))[6], ((__const char *) (src))[7] } })
__STRING_INLINE void *__mempcpy_small (void *, char, __STRING2_COPY_ARR2,
				       __STRING2_COPY_ARR3,
				       __STRING2_COPY_ARR4,
				       __STRING2_COPY_ARR5,
				       __STRING2_COPY_ARR6,
				       __STRING2_COPY_ARR7,
				       __STRING2_COPY_ARR8, size_t);
__STRING_INLINE void *
__mempcpy_small (void *__dest, char __src1,
		 __STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3,
		 __STRING2_COPY_ARR4 __src4, __STRING2_COPY_ARR5 __src5,
		 __STRING2_COPY_ARR6 __src6, __STRING2_COPY_ARR7 __src7,
		 __STRING2_COPY_ARR8 __src8, size_t __srclen)
{
  union {
    char __c;
    __STRING2_COPY_ARR2 __sca2;
    __STRING2_COPY_ARR3 __sca3;
    __STRING2_COPY_ARR4 __sca4;
    __STRING2_COPY_ARR5 __sca5;
    __STRING2_COPY_ARR6 __sca6;
    __STRING2_COPY_ARR7 __sca7;
    __STRING2_COPY_ARR8 __sca8;
  } *__u = __dest;
  switch ((unsigned int) __srclen)
    {
    case 1:
      __u->__c = __src1;
      break;
    case 2:
      __extension__ __u->__sca2 = __src2;
      break;
    case 3:
      __extension__ __u->__sca3 = __src3;
      break;
    case 4:
      __extension__ __u->__sca4 = __src4;
      break;
    case 5:
      __extension__ __u->__sca5 = __src5;
      break;
    case 6:
      __extension__ __u->__sca6 = __src6;
      break;
    case 7:
      __extension__ __u->__sca7 = __src7;
      break;
    case 8:
      __extension__ __u->__sca8 = __src8;
      break;
    }
  return __extension__ (void *)((char *) __u + __srclen);
}
#  endif
# endif
#endif


/* Return pointer to C in S.  */
#ifndef _HAVE_STRING_ARCH_strchr
extern void *__rawmemchr (const void *__s, int __c);
# define strchr(s, c) \
  (__extension__ (__builtin_constant_p (c) && (c) == '\0'		      \
		  ? (char *) __rawmemchr (s, c)				      \
		  : strchr (s, c)))
#endif


/* Copy SRC to DEST.  */
#ifndef _HAVE_STRING_ARCH_strcpy
# define strcpy(dest, src) \
  (__extension__ (__builtin_constant_p (src)				      \
		  ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8	      \
		     ? __strcpy_small (dest, __strcpy_args (src),	      \
				       strlen (src) + 1)		      \
		     : (char *) memcpy (dest, src, strlen (src) + 1))	      \
		  : strcpy (dest, src)))

# if _STRING_ARCH_unaligned
#  define __strcpy_args(src) \
     __extension__ __STRING2_SMALL_GET16 (src, 0),			      \
     __extension__ __STRING2_SMALL_GET16 (src, 4),			      \
     __extension__ __STRING2_SMALL_GET32 (src, 0),			      \
     __extension__ __STRING2_SMALL_GET32 (src, 4)
__STRING_INLINE char *__strcpy_small (char *, __uint16_t, __uint16_t,
				      __uint32_t, __uint32_t, size_t);
__STRING_INLINE char *
__strcpy_small (char *__dest,
		__uint16_t __src0_2, __uint16_t __src4_2,
		__uint32_t __src0_4, __uint32_t __src4_4,
		size_t __srclen)
{
  union {
    __uint32_t __ui;
    __uint16_t __usi;
    unsigned char __uc;
  } *__u = (void *) __dest;
  switch ((unsigned int) __srclen)
    {
    case 1:
      __u->__uc = '\0';
      break;
    case 2:
      __u->__usi = __src0_2;
      break;
    case 3:
      __u->__usi = __src0_2;
      __u = __extension__ (void *)((char *) __u + 2);
      __u->__uc = '\0';
      break;
    case 4:
      __u->__ui = __src0_4;
      break;
    case 5:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__uc = '\0';
      break;
    case 6:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__usi = __src4_2;
      break;
    case 7:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__usi = __src4_2;
      __u = __extension__ (void *)((char *) __u + 2);
      __u->__uc = '\0';
      break;
    case 8:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__ui = __src4_4;
      break;
    }
  return __dest;
}
# else
#  define __strcpy_args(src) \
     __extension__ ((__STRING2_COPY_ARR2)				      \
      { { ((__const char *) (src))[0], '\0' } }),			      \
     __extension__ ((__STRING2_COPY_ARR3)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  '\0' } }),							      \
     __extension__ ((__STRING2_COPY_ARR4)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], '\0' } }),			      \
     __extension__ ((__STRING2_COPY_ARR5)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  '\0' } }),							      \
     __extension__ ((__STRING2_COPY_ARR6)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  ((__const char *) (src))[4], '\0' } }),			      \
     __extension__ ((__STRING2_COPY_ARR7)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  ((__const char *) (src))[4], ((__const char *) (src))[5],	      \
	  '\0' } }),							      \
     __extension__ ((__STRING2_COPY_ARR8)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  ((__const char *) (src))[4], ((__const char *) (src))[5],	      \
	  ((__const char *) (src))[6], '\0' } })
__STRING_INLINE char *__strcpy_small (char *, __STRING2_COPY_ARR2,
				      __STRING2_COPY_ARR3,
				      __STRING2_COPY_ARR4,
				      __STRING2_COPY_ARR5,
				      __STRING2_COPY_ARR6,
				      __STRING2_COPY_ARR7,
				      __STRING2_COPY_ARR8, size_t);
__STRING_INLINE char *
__strcpy_small (char *__dest,
		__STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3,
		__STRING2_COPY_ARR4 __src4, __STRING2_COPY_ARR5 __src5,
		__STRING2_COPY_ARR6 __src6, __STRING2_COPY_ARR7 __src7,
		__STRING2_COPY_ARR8 __src8, size_t __srclen)
{
  union {
    char __c;
    __STRING2_COPY_ARR2 __sca2;
    __STRING2_COPY_ARR3 __sca3;
    __STRING2_COPY_ARR4 __sca4;
    __STRING2_COPY_ARR5 __sca5;
    __STRING2_COPY_ARR6 __sca6;
    __STRING2_COPY_ARR7 __sca7;
    __STRING2_COPY_ARR8 __sca8;
  } *__u = (void *) __dest;
  switch ((unsigned int) __srclen)
    {
    case 1:
      __u->__c = '\0';
      break;
    case 2:
      __extension__ __u->__sca2 = __src2;
      break;
    case 3:
      __extension__ __u->__sca3 = __src3;
      break;
    case 4:
      __extension__ __u->__sca4 = __src4;
      break;
    case 5:
      __extension__ __u->__sca5 = __src5;
      break;
    case 6:
      __extension__ __u->__sca6 = __src6;
      break;
    case 7:
      __extension__ __u->__sca7 = __src7;
      break;
    case 8:
      __extension__ __u->__sca8 = __src8;
      break;
  }
  return __dest;
}
# endif
#endif


/* Copy SRC to DEST, returning pointer to final NUL byte.  */
#ifdef __USE_GNU
# ifndef _HAVE_STRING_ARCH_stpcpy
#  define __stpcpy(dest, src) \
  (__extension__ (__builtin_constant_p (src)				      \
		  ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8	      \
		     ? __stpcpy_small (dest, __stpcpy_args (src),	      \
				       strlen (src) + 1)		      \
		     : ((char *) __mempcpy (dest, src, strlen (src) + 1) - 1))\
		  : __stpcpy (dest, src)))
/* In glibc we use this function frequently but for namespace reasons
   we have to use the name `__stpcpy'.  */
#  define stpcpy(dest, src) __stpcpy (dest, src)

#  if _STRING_ARCH_unaligned
#   define __stpcpy_args(src) \
     __extension__ __STRING2_SMALL_GET16 (src, 0),			      \
     __extension__ __STRING2_SMALL_GET16 (src, 4),			      \
     __extension__ __STRING2_SMALL_GET32 (src, 0),			      \
     __extension__ __STRING2_SMALL_GET32 (src, 4)
__STRING_INLINE char *__stpcpy_small (char *, __uint16_t, __uint16_t,
				      __uint32_t, __uint32_t, size_t);
__STRING_INLINE char *
__stpcpy_small (char *__dest,
		__uint16_t __src0_2, __uint16_t __src4_2,
		__uint32_t __src0_4, __uint32_t __src4_4,
		size_t __srclen)
{
  union {
    unsigned int __ui;
    unsigned short int __usi;
    unsigned char __uc;
    char __c;
  } *__u = (void *) __dest;
  switch ((unsigned int) __srclen)
    {
    case 1:
      __u->__uc = '\0';
      break;
    case 2:
      __u->__usi = __src0_2;
      __u = __extension__ (void *)((char *) __u + 1);
      break;
    case 3:
      __u->__usi = __src0_2;
      __u = __extension__ (void *)((char *) __u + 2);
      __u->__uc = '\0';
      break;
    case 4:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 3);
      break;
    case 5:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__uc = '\0';
      break;
    case 6:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__usi = __src4_2;
      __u = __extension__ (void *)((char *) __u + 1);
      break;
    case 7:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__usi = __src4_2;
      __u = __extension__ (void *)((char *) __u + 2);
      __u->__uc = '\0';
      break;
    case 8:
      __u->__ui = __src0_4;
      __u = __extension__ (void *)((char *) __u + 4);
      __u->__ui = __src4_4;
      __u = __extension__ (void *)((char *) __u + 3);
      break;
    }
  return &__u->__c;
}
#  else
#  define __stpcpy_args(src) \
     __extension__ ((__STRING2_COPY_ARR2)				      \
      { { ((__const char *) (src))[0], '\0' } }),			      \
     __extension__ ((__STRING2_COPY_ARR3)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  '\0' } }),							      \
     __extension__ ((__STRING2_COPY_ARR4)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], '\0' } }),			      \
     __extension__ ((__STRING2_COPY_ARR5)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  '\0' } }),							      \
     __extension__ ((__STRING2_COPY_ARR6)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  ((__const char *) (src))[4], '\0' } }),			      \
     __extension__ ((__STRING2_COPY_ARR7)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  ((__const char *) (src))[4], ((__const char *) (src))[5],	      \
	  '\0' } }),							      \
     __extension__ ((__STRING2_COPY_ARR8)				      \
      { { ((__const char *) (src))[0], ((__const char *) (src))[1],	      \
	  ((__const char *) (src))[2], ((__const char *) (src))[3],	      \
	  ((__const char *) (src))[4], ((__const char *) (src))[5],	      \
	  ((__const char *) (src))[6], '\0' } })
__STRING_INLINE char *__stpcpy_small (char *, __STRING2_COPY_ARR2,
				      __STRING2_COPY_ARR3,
				      __STRING2_COPY_ARR4,
				      __STRING2_COPY_ARR5,
				      __STRING2_COPY_ARR6,
				      __STRING2_COPY_ARR7,
				      __STRING2_COPY_ARR8, size_t);
__STRING_INLINE char *
__stpcpy_small (char *__dest,
		__STRING2_COPY_ARR2 __src2, __STRING2_COPY_ARR3 __src3,
		__STRING2_COPY_ARR4 __src4, __STRING2_COPY_ARR5 __src5,
		__STRING2_COPY_ARR6 __src6, __STRING2_COPY_ARR7 __src7,
		__STRING2_COPY_ARR8 __src8, size_t __srclen)
{
  union {
    char __c;
    __STRING2_COPY_ARR2 __sca2;
    __STRING2_COPY_ARR3 __sca3;
    __STRING2_COPY_ARR4 __sca4;
    __STRING2_COPY_ARR5 __sca5;
    __STRING2_COPY_ARR6 __sca6;
    __STRING2_COPY_ARR7 __sca7;
    __STRING2_COPY_ARR8 __sca8;
  } *__u = (void *) __dest;
  switch ((unsigned int) __srclen)
    {
    case 1:
      __u->__c = '\0';
      break;
    case 2:
      __extension__ __u->__sca2 = __src2;
      break;
    case 3:
      __extension__ __u->__sca3 = __src3;
      break;
    case 4:
      __extension__ __u->__sca4 = __src4;
      break;
    case 5:
      __extension__ __u->__sca5 = __src5;
      break;
    case 6:
      __extension__ __u->__sca6 = __src6;
      break;
    case 7:
      __extension__ __u->__sca7 = __src7;
      break;
    case 8:
      __extension__ __u->__sca8 = __src8;
      break;
  }
  return __dest + __srclen - 1;
}
#  endif
# endif
#endif


/* Copy no more than N characters of SRC to DEST.  */
#ifndef _HAVE_STRING_ARCH_strncpy
# if defined _USE_STRING_ARCH_memset && defined _USE_STRING_ARCH_mempcpy
#  define strncpy(dest, src, n) \
  (__extension__ ({ char *__dest = (dest);				      \
		    __builtin_constant_p (src) && __builtin_constant_p (n)    \
		    ? (strlen (src) + 1 >= ((size_t) (n))		      \
		       ? (char *) memcpy (__dest, src, n)		      \
		       : (memset (__mempcpy (__dest, src, strlen (src)),      \
				  '\0', n - strlen (src)),		      \
			  __dest))					      \
		    : strncpy (__dest, src, n); }))
# else
#  define strncpy(dest, src, n) \
  (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
		  ? (strlen (src) + 1 >= ((size_t) (n))			      \
		     ? (char *) memcpy (dest, src, n)			      \
		     : strncpy (dest, src, n))				      \
		  : strncpy (dest, src, n)))
# endif
#endif


/* Append no more than N characters from SRC onto DEST.  */
#ifndef _HAVE_STRING_ARCH_strncat
# ifdef _USE_STRING_ARCH_strchr
#  define strncat(dest, src, n) \
  (__extension__ ({ char *__dest = (dest);				      \
		    __builtin_constant_p (src) && __builtin_constant_p (n)    \
		    ? (strlen (src) < ((size_t) (n))			      \
		       ? strcat (__dest, src)				      \
		       : (*((char *) __mempcpy (strchr (__dest, '\0'),	      \
						src, n)) = '\0', __dest))     \
		    : strncat (dest, src, n); }))
# else
#  define strncat(dest, src, n) \
  (__extension__ (__builtin_constant_p (src) && __builtin_constant_p (n)      \
		  ? (strlen (src) < ((size_t) (n))			      \
		     ? strcat (dest, src)				      \
		     : strncat (dest, src, n))				      \
		  : strncat (dest, src, n)))
# endif
#endif


/* Compare characters of S1 and S2.  */
#ifndef _HAVE_STRING_ARCH_strcmp
# define strcmp(s1, s2) \
  __extension__								      \
  ({ size_t __s1_len, __s2_len;						      \
     (__builtin_constant_p (s1) && __builtin_constant_p (s2)		      \
      && (__s1_len = strlen (s1), __s2_len = strlen (s2),		      \
	  (!__string2_1bptr_p (s1) || __s1_len >= 4)			      \
	  && (!__string2_1bptr_p (s2) || __s2_len >= 4))		      \
      ? memcmp ((__const char *) (s1), (__const char *) (s2),		      \
		(__s1_len < __s2_len ? __s1_len : __s2_len) + 1)	      \
      : (__builtin_constant_p (s1) && __string2_1bptr_p (s1)		      \
	 && (__s1_len = strlen (s1), __s1_len < 4)			      \
	 ? (__builtin_constant_p (s2) && __string2_1bptr_p (s2)		      \
	    ? __strcmp_cc (s1, s2, __s1_len)				      \
	    : __strcmp_cg (s1, s2, __s1_len))				      \
	 : (__builtin_constant_p (s2) && __string2_1bptr_p (s2)		      \
	    && (__s2_len = strlen (s2), __s2_len < 4)			      \
	    ? (__builtin_constant_p (s1) && __string2_1bptr_p (s1)	      \
	       ? __strcmp_cc (s1, s2, __s2_len)				      \
	       : __strcmp_gc (s1, s2, __s2_len))			      \
	    : strcmp (s1, s2)))); })

# define __strcmp_cc(s1, s2, l) \
  (__extension__ ({ register int __result =				      \
		      (((__const unsigned char *) (__const char *) (s1))[0]   \
		       - ((__const unsigned char *) (__const char *)(s2))[0]);\
		    if (l > 0 && __result == 0)				      \
		      {							      \
			__result = (((__const unsigned char *)		      \
				     (__const char *) (s1))[1]		      \
				    - ((__const unsigned char *)	      \
				       (__const char *) (s2))[1]);	      \
			if (l > 1 && __result == 0)			      \
			  {						      \
			    __result =					      \
			      (((__const unsigned char *)		      \
				(__const char *) (s1))[2]		      \
			       - ((__const unsigned char *)		      \
				  (__const char *) (s2))[2]);		      \
			    if (l > 2 && __result == 0)			      \
			      __result =				      \
				(((__const unsigned char *)		      \
				  (__const char *) (s1))[3]		      \
				 - ((__const unsigned char *)		      \
				    (__const char *) (s2))[3]);		      \
			  }						      \
		      }							      \
		    __result; }))

# define __strcmp_cg(s1, s2, l1) \
  (__extension__ ({ __const unsigned char *__s2 =			      \
		      (__const unsigned char *) (__const char *) (s2);	      \
		    register int __result =				      \
		      (((__const unsigned char *) (__const char *) (s1))[0]   \
		       - __s2[0]);					      \
		    if (l1 > 0 && __result == 0)			      \
		      {							      \
			__result = (((__const unsigned char *)		      \
				     (__const char *) (s1))[1] - __s2[1]);    \
			if (l1 > 1 && __result == 0)			      \
			  {						      \
			    __result = (((__const unsigned char *)	      \
					 (__const char *) (s1))[2] - __s2[2]);\
			    if (l1 > 2 && __result == 0)		      \
			      __result = (((__const unsigned char *)	      \
					  (__const char *)  (s1))[3]	      \
					  - __s2[3]);			      \
			  }						      \
		      }							      \
		    __result; }))

# define __strcmp_gc(s1, s2, l2) \
  (__extension__ ({ __const unsigned char *__s1 =			      \
		      (__const unsigned char *) (__const char *) (s1);	      \
		    register int __result =				      \
		      __s1[0] - ((__const unsigned char *)		      \
				 (__const char *) (s2))[0];		      \
		    if (l2 > 0 && __result == 0)			      \
		      {							      \
			__result = (__s1[1]				      \
				    - ((__const unsigned char *)	      \
				       (__const char *) (s2))[1]);	      \
			if (l2 > 1 && __result == 0)			      \
			  {						      \
			    __result =					      \
			      (__s1[2] - ((__const unsigned char *)	      \
					  (__const char *) (s2))[2]);	      \
			    if (l2 > 2 && __result == 0)		      \
			      __result =				      \
				(__s1[3]				      \
				 - ((__const unsigned char *)		      \
				    (__const char *) (s2))[3]);		      \
			  }						      \
		      }							      \
		    __result; }))
#endif


/* Compare N characters of S1 and S2.  */
#ifndef _HAVE_STRING_ARCH_strncmp
# define strncmp(s1, s2, n)						      \
  (__extension__ (__builtin_constant_p (n)				      \
		  && ((__builtin_constant_p (s1)			      \
		       && strlen (s1) < ((size_t) (n)))			      \
		      || (__builtin_constant_p (s2)			      \
			  && strlen (s2) < ((size_t) (n))))		      \
		  ? strcmp (s1, s2) : strncmp (s1, s2, n)))
#endif


/* Return the length of the initial segment of S which
   consists entirely of characters not in REJECT.  */
#ifndef _HAVE_STRING_ARCH_strcspn
# define strcspn(s, reject) \
  __extension__								      \
  ({ char __r0, __r1, __r2;						      \
     (__builtin_constant_p (reject) && __string2_1bptr_p (reject)	      \
      ? ((__r0 = ((__const char *) (reject))[0], __r0 == '\0')		      \
	 ? strlen (s)							      \
	 : ((__r1 = ((__const char *) (reject))[1], __r1 == '\0')	      \
	    ? __strcspn_c1 (s, __r0)					      \
	    : ((__r2 = ((__const char *) (reject))[2], __r2 == '\0')	      \
	       ? __strcspn_c2 (s, __r0, __r1)				      \
	       : (((__const char *) (reject))[3] == '\0'		      \
		  ? __strcspn_c3 (s, __r0, __r1, __r2)			      \
		  : strcspn (s, reject)))))				      \
		  : strcspn (s, reject)); })

__STRING_INLINE size_t __strcspn_c1 (__const char *__s, char __reject);
__STRING_INLINE size_t
__strcspn_c1 (__const char *__s, char __reject)
{
  register size_t __result = 0;
  while (__s[__result] != '\0' && __s[__result] != __reject)
    ++__result;
  return __result;
}

__STRING_INLINE size_t __strcspn_c2 (__const char *__s, char __reject1,
				     char __reject2);
__STRING_INLINE size_t
__strcspn_c2 (__const char *__s, char __reject1, char __reject2)
{
  register size_t __result = 0;
  while (__s[__result] != '\0' && __s[__result] != __reject1
	 && __s[__result] != __reject2)
    ++__result;
  return __result;
}

__STRING_INLINE size_t __strcspn_c3 (__const char *__s, char __reject1,
				     char __reject2, char __reject3);
__STRING_INLINE size_t
__strcspn_c3 (__const char *__s, char __reject1, char __reject2,
	      char __reject3)
{
  register size_t __result = 0;
  while (__s[__result] != '\0' && __s[__result] != __reject1
	 && __s[__result] != __reject2 && __s[__result] != __reject3)
    ++__result;
  return __result;
}
#endif


/* Return the length of the initial segment of S which
   consists entirely of characters in ACCEPT.  */
#ifndef _HAVE_STRING_ARCH_strspn
# define strspn(s, accept) \
  __extension__								      \
  ({ char __a0, __a1, __a2;						      \
     (__builtin_constant_p (accept) && __string2_1bptr_p (accept)	      \
      ? ((__a0 = ((__const char *) (accept))[0], __a0 == '\0')		      \
	 ? ((void) (s), 0)						      \
	 : ((__a1 = ((__const char *) (accept))[1], __a1 == '\0')	      \
	    ? __strspn_c1 (s, __a0)					      \
	    : ((__a2 = ((__const char *) (accept))[2], __a2 == '\0')	      \
	       ? __strspn_c2 (s, __a0, __a1)				      \
	       : (((__const char *) (accept))[3] == '\0'		      \
		  ? __strspn_c3 (s, __a0, __a1, __a2)			      \
		  : strspn (s, accept)))))				      \
      : strspn (s, accept)); })

__STRING_INLINE size_t __strspn_c1 (__const char *__s, char __accept);
__STRING_INLINE size_t
__strspn_c1 (__const char *__s, char __accept)
{
  register size_t __result = 0;
  /* Please note that __accept never can be '\0'.  */
  while (__s[__result] == __accept)
    ++__result;
  return __result;
}

__STRING_INLINE size_t __strspn_c2 (__const char *__s, char __accept1,
				    char __accept2);
__STRING_INLINE size_t
__strspn_c2 (__const char *__s, char __accept1, char __accept2)
{
  register size_t __result = 0;
  /* Please note that __accept1 and __accept2 never can be '\0'.  */
  while (__s[__result] == __accept1 || __s[__result] == __accept2)
    ++__result;
  return __result;
}

__STRING_INLINE size_t __strspn_c3 (__const char *__s, char __accept1,
				    char __accept2, char __accept3);
__STRING_INLINE size_t
__strspn_c3 (__const char *__s, char __accept1, char __accept2, char __accept3)
{
  register size_t __result = 0;
  /* Please note that __accept1 to __accept3 never can be '\0'.  */
  while (__s[__result] == __accept1 || __s[__result] == __accept2
	 || __s[__result] == __accept3)
    ++__result;
  return __result;
}
#endif


/* Find the first occurrence in S of any character in ACCEPT.  */
#ifndef _HAVE_STRING_ARCH_strpbrk
# define strpbrk(s, accept) \
  __extension__								      \
  ({ char __a0, __a1, __a2;						      \
     (__builtin_constant_p (accept) && __string2_1bptr_p (accept)	      \
      ? ((__a0 = ((__const char  *) (accept))[0], __a0 == '\0')		      \
	 ? ((void) (s), NULL)						      \
	 : ((__a1 = ((__const char *) (accept))[1], __a1 == '\0')	      \
	    ? strchr (s, __a0)						      \
	    : ((__a2 = ((__const char *) (accept))[2], __a2 == '\0')	      \
	       ? __strpbrk_c2 (s, __a0, __a1)				      \
	       : (((__const char *) (accept))[3] == '\0'		      \
		  ? __strpbrk_c3 (s, __a0, __a1, __a2)			      \
		  : strpbrk (s, accept)))))				      \
      : strpbrk (s, accept)); })

__STRING_INLINE char *__strpbrk_c2 (__const char *__s, int __accept1,
				     int __accept2);
__STRING_INLINE char *
__strpbrk_c2 (__const char *__s, int __accept1, int __accept2)
{
  /* Please note that __accept1 and __accept2 never can be '\0'.  */
  while (*__s != '\0' && *__s != __accept1 && *__s != __accept2)
    ++__s;
  return *__s == '\0' ? NULL : (char *) (size_t) __s;
}

__STRING_INLINE char *__strpbrk_c3 (__const char *__s, int __accept1,
				     int __accept2, int __accept3);
__STRING_INLINE char *
__strpbrk_c3 (__const char *__s, int __accept1, int __accept2,
	      int __accept3)
{
  /* Please note that __accept1 to __accept3 never can be '\0'.  */
  while (*__s != '\0' && *__s != __accept1 && *__s != __accept2
	 && *__s != __accept3)
    ++__s;
  return *__s == '\0' ? NULL : (char *) (size_t) __s;
}
#endif


/* Find the first occurrence of NEEDLE in HAYSTACK.  Newer gcc versions
   do this itself.  */
#if !defined _HAVE_STRING_ARCH_strstr && !__GNUC_PREREQ (2, 97)
# define strstr(haystack, needle) \
  (__extension__ (__builtin_constant_p (needle) && __string2_1bptr_p (needle) \
		  ? (((__const char *) (needle))[0] == '\0'		      \
		     ? (char *) (size_t) (haystack)			      \
		     : (((__const char *) (needle))[1] == '\0'		      \
			? strchr (haystack,				      \
				  ((__const char *) (needle))[0]) 	      \
			: strstr (haystack, needle)))			      \
		  : strstr (haystack, needle)))
#endif


#if defined __USE_GNU && !defined _FORCE_INLINES
# ifndef _HAVE_STRING_ARCH_strnlen
__STRING_INLINE size_t
strnlen (__const char *__string, size_t __maxlen)
{
  __const char *__end = (__const char *) memchr (__string, '\0', __maxlen);
  return __end ? (size_t) (__end - __string) : __maxlen;
}
# endif
#endif


#ifndef _HAVE_STRING_ARCH_strtok_r
# define __strtok_r(s, sep, nextp) \
  (__extension__ (__builtin_constant_p (sep) && __string2_1bptr_p (sep)	      \
		  ? (((__const char *) (sep))[0] != '\0'		      \
		     && ((__const char *) (sep))[1] == '\0'		      \
		     ? __strtok_r_1c (s, ((__const char *) (sep))[0], nextp)  \
		     : __strtok_r (s, sep, nextp))			      \
		  : __strtok_r (s, sep, nextp)))

__STRING_INLINE char *__strtok_r_1c (char *__s, char __sep, char **__nextp);
__STRING_INLINE char *
__strtok_r_1c (char *__s, char __sep, char **__nextp)
{
  char *__result;
  if (__s == NULL)
    __s = *__nextp;
  while (*__s == __sep)
    ++__s;
  if (*__s == '\0')
    __result = NULL;
  else
    {
      __result = __s;
      while (*__s != '\0' && *__s != __sep)
	++__s;
      if (*__s == '\0')
	*__nextp = __s;
      else
	{
	  *__s = '\0';
	  *__nextp = __s + 1;
	}
    }
  return __result;
}
# if defined __USE_POSIX || defined __USE_MISC
#  define strtok_r(s, sep, nextp) __strtok_r ((s), (sep), (nextp))
# endif
#endif


#ifndef _HAVE_STRING_ARCH_strsep

# define __strsep(s, reject) \
  __extension__								      \
  ({ char __r0, __r1, __r2;						      \
     (__builtin_constant_p (reject) && __string2_1bptr_p (reject)	      \
      && (__r0 = ((__const char *) (reject))[0],			      \
	  ((__const char *) (reject))[0] != '\0')			      \
      ? ((__r1 = ((__const char *) (reject))[1],			      \
	 ((__const char *) (reject))[1] == '\0')			      \
	 ? __strsep_1c (s, __r0)					      \
	 : ((__r2 = ((__const char *) (reject))[2], __r2 == '\0')	      \
	    ? __strsep_2c (s, __r0, __r1)				      \
	    : (((__const char *) (reject))[3] == '\0'			      \
	       ? __strsep_3c (s, __r0, __r1, __r2)			      \
	       : __strsep_g (s, reject))))				      \
      : __strsep_g (s, reject)); })

__STRING_INLINE char *__strsep_1c (char **__s, char __reject);
__STRING_INLINE char *
__strsep_1c (char **__s, char __reject)
{
  register char *__retval = *__s;
  if (__retval == NULL)
    return *__s = NULL;
  if (*__retval == __reject)
    *(*__s)++ = '\0';
  else
    if ((*__s = strchr (__retval, __reject)) != NULL)
      *(*__s)++ = '\0';
    else
      *__s = NULL;
  return __retval;
}

__STRING_INLINE char *__strsep_2c (char **__s, char __reject1, char __reject2);
__STRING_INLINE char *
__strsep_2c (char **__s, char __reject1, char __reject2)
{
  register char *__retval = *__s;
  if (__retval == NULL)
    return *__s = NULL;
  if (*__retval == __reject1 || *__retval == __reject2)
    *(*__s)++ = '\0';
  else
    {
      register char *__cp = __retval;
      while (*__cp != '\0' && *__cp != __reject1 && *__cp != __reject2)
	++__cp;
      if (*__cp != '\0')
	{
	  *__s = __cp;
	  *(*__s)++ = '\0';
	}
      else
	*__s = NULL;
    }
  return __retval;
}

__STRING_INLINE char *__strsep_3c (char **__s, char __reject1, char __reject2,
				   char __reject3);
__STRING_INLINE char *
__strsep_3c (char **__s, char __reject1, char __reject2, char __reject3)
{
  register char *__retval = *__s;
  if (__retval == NULL)
    return *__s = NULL;
  if (*__retval == __reject1 || *__retval == __reject2
      || *__retval == __reject3)
    *(*__s)++ = '\0';
  else
    {
      register char *__cp = __retval;
      while (*__cp != '\0' && *__cp != __reject1 && *__cp != __reject2
	     && *__cp != __reject3)
	++__cp;
      if (*__cp != '\0')
	{
	  *__s = __cp;
	  *(*__s)++ = '\0';
	}
      else
	*__s = NULL;
    }
  return __retval;
}

__STRING_INLINE char *__strsep_g (char **__s, __const char *__reject);
__STRING_INLINE char *
__strsep_g (char **__s, __const char *__reject)
{
  register char *__retval = *__s;
  if (__retval == NULL)
    return NULL;
  if ((*__s = strpbrk (__retval, __reject)) != NULL)
    *(*__s)++ = '\0';
  return __retval;
}
# ifdef __USE_BSD
#  define strsep(s, reject) __strsep ((s), (reject))
# endif
#endif

/* We need the memory allocation functions for inline strdup().
   Referring to stdlib.h (even minimally) is not allowed
   in any of the tight standards compliant modes.  */
#ifdef __USE_MISC

# if !defined _HAVE_STRING_ARCH_strdup || !defined _HAVE_STRING_ARCH_strndup
#  define __need_malloc_and_calloc
#  include <stdlib.h>
# endif

# ifndef _HAVE_STRING_ARCH_strdup

extern char *__strdup (__const char *__string) __THROW __attribute_malloc__;
#  define __strdup(s) \
  (__extension__ (__builtin_constant_p (s) && __string2_1bptr_p (s)	      \
		  ? (((__const char *) (s))[0] == '\0'			      \
		     ? (char *) calloc (1, 1)				      \
		     : ({ size_t __len = strlen (s) + 1;		      \
			  char *__retval = (char *) malloc (__len);	      \
			  if (__retval != NULL)				      \
			    __retval = (char *) memcpy (__retval, s, __len);  \
			  __retval; }))					      \
		  : __strdup (s)))

#  if defined __USE_SVID || defined __USE_BSD || defined __USE_XOPEN_EXTENDED
#   define strdup(s) __strdup (s)
#  endif
# endif

# ifndef _HAVE_STRING_ARCH_strndup

extern char *__strndup (__const char *__string, size_t __n)
     __THROW __attribute_malloc__;
#  define __strndup(s, n) \
  (__extension__ (__builtin_constant_p (s) && __string2_1bptr_p (s)	      \
		  ? (((__const char *) (s))[0] == '\0'			      \
		     ? (char *) calloc (1, 1)				      \
		     : ({ size_t __len = strlen (s) + 1;		      \
			  size_t __n = (n);				      \
			  char *__retval;				      \
			  if (__n < __len)				      \
			    __len = __n;				      \
			  __retval = (char *) malloc (__len);		      \
			  if (__retval != NULL)				      \
			    {						      \
			      __retval[__len - 1] = '\0';		      \
			      __retval = (char *) memcpy (__retval, s,	      \
							  __len - 1);	      \
			    }						      \
			  __retval; }))					      \
		  : __strndup ((s), (n))))

#  ifdef __USE_GNU
#   define strndup(s, n) __strndup ((s), (n))
#  endif
# endif

#endif /* Use misc. or use GNU.  */

#ifndef _FORCE_INLINES
# undef __STRING_INLINE
#endif

#endif /* No string inlines.  */