summaryrefslogtreecommitdiff
path: root/05/tests/parse_stb_sprintf.h
blob: f64ac23713f04962765a01233da5551d57a1de42 (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
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
/* PARSING TEST */
#define va_arg(va, type) (*(type*)(va))
#define va_start(va, arg)
#define va_end(va)
#define const
#define signed
#define volatile

typedef void *va_list;
typedef unsigned long size_t;
typedef long ptrdiff_t;


#define STB_SPRINTF_IMPLEMENTATION



















#ifndef STB_SPRINTF_H_INCLUDE
#define STB_SPRINTF_H_INCLUDE

/*
Single file sprintf replacement.

Originally written by Jeff Roberts at RAD Game Tools - 2015/10/20.
Hereby placed in public domain.

This is a full sprintf replacement that supports everything that
the C runtime sprintfs support, including float/double, 64-bit integers,
hex floats, field parameters (%*.*d stuff), length reads backs, etc.

Why would you need this if sprintf already exists?  Well, first off,
it's *much* faster (see below). It's also much smaller than the CRT
versions code-space-wise. We've also added some simple improvements
that are super handy (commas in thousands, callbacks at buffer full,
for example). Finally, the format strings for MSVC and GCC differ
for 64-bit integers (among other small things), so this lets you use
the same format strings in cross platform code.

It uses the standard single file trick of being both the header file
and the source itself. If you just include it normally, you just get
the header file function definitions. To get the code, you include
it from a C or C++ file and define STB_SPRINTF_IMPLEMENTATION first.

It only uses va_args macros from the C runtime to do it's work. It
does cast doubles to S64s and shifts and divides U64s, which does
drag in CRT code on most platforms.

It compiles to roughly 8K with float support, and 4K without.
As a comparison, when using MSVC static libs, calling sprintf drags
in 16K.

API:
====
int stbsp_sprintf( char * buf, char const * fmt, ... )
int stbsp_snprintf( char * buf, int count, char const * fmt, ... )
  Convert an arg list into a buffer.  stbsp_snprintf always returns
  a zero-terminated string (unlike regular snprintf).

int stbsp_vsprintf( char * buf, char const * fmt, va_list va )
int stbsp_vsnprintf( char * buf, int count, char const * fmt, va_list va )
  Convert a va_list arg list into a buffer.  stbsp_vsnprintf always returns
  a zero-terminated string (unlike regular snprintf).

int stbsp_vsprintfcb( STBSP_SPRINTFCB * callback, void * user, char * buf, char const * fmt, va_list va )
    typedef char * STBSP_SPRINTFCB( char const * buf, void * user, int len );
  Convert into a buffer, calling back every STB_SPRINTF_MIN chars.
  Your callback can then copy the chars out, print them or whatever.
  This function is actually the workhorse for everything else.
  The buffer you pass in must hold at least STB_SPRINTF_MIN characters.
    

void stbsp_set_separators( char comma, char period )
  Set the comma and period characters to use.

FLOATS/DOUBLES:
===============
This code uses a internal float->ascii conversion method that uses
doubles with error correction (double-doubles, for ~105 bits of
precision).  This conversion is round-trip perfect - that is, an atof
of the values output here will give you the bit-exact double back.

One difference is that our insignificant digits will be different than
with MSVC or GCC (but they don't match each other either).  We also
don't attempt to find the minimum length matching float (pre-MSVC15
doesn't either).

If you don't need float or doubles at all, define STB_SPRINTF_NOFLOAT
and you'll save 4K of code space.

64-BIT INTS:
============
This library also supports 64-bit integers and you can use MSVC style or
GCC style indicators (%I64d or %lld).  It supports the C99 specifiers
for size_t and ptr_diff_t (%jd %zd) as well.

EXTRAS:
=======
Like some GCCs, for integers and floats, you can use a ' (single quote)
specifier and commas will be inserted on the thousands: "%'d" on 12345
would print 12,345.

For integers and floats, you can use a "$" specifier and the number
will be converted to float and then divided to get kilo, mega, giga or
tera and then printed, so "%$d" 1000 is "1.0 k", "%$.2d" 2536000 is
"2.53 M", etc. For byte values, use two $:s, like "%$$d" to turn
2536000 to "2.42 Mi". If you prefer JEDEC suffixes to SI ones, use three
$:s: "%$$$d" -> "2.42 M". To remove the space between the number and the
suffix, add "_" specifier: "%_$d" -> "2.53M".

In addition to octal and hexadecimal conversions, you can print
integers in binary: "%b" for 256 would print 100.

PERFORMANCE vs MSVC 2008 32-/64-bit (GCC is even slower than MSVC):
===================================================================
"%d" across all 32-bit ints (4.8x/4.0x faster than 32-/64-bit MSVC)
"%24d" across all 32-bit ints (4.5x/4.2x faster)
"%x" across all 32-bit ints (4.5x/3.8x faster)
"%08x" across all 32-bit ints (4.3x/3.8x faster)
"%f" across e-10 to e+10 floats (7.3x/6.0x faster)
"%e" across e-10 to e+10 floats (8.1x/6.0x faster)
"%g" across e-10 to e+10 floats (10.0x/7.1x faster)
"%f" for values near e-300 (7.9x/6.5x faster)
"%f" for values near e+300 (10.0x/9.1x faster)
"%e" for values near e-300 (10.1x/7.0x faster)
"%e" for values near e+300 (9.2x/6.0x faster)
"%.320f" for values near e-300 (12.6x/11.2x faster)
"%a" for random values (8.6x/4.3x faster)
"%I64d" for 64-bits with 32-bit values (4.8x/3.4x faster)
"%I64d" for 64-bits > 32-bit values (4.9x/5.5x faster)
"%s%s%s" for 64 char strings (7.1x/7.3x faster)
"...512 char string..." ( 35.0x/32.5x faster!)
*/

#if defined(__clang__)
 #if defined(__has_feature) && defined(__has_attribute)
  #if __has_feature(address_sanitizer)
   #if __has_attribute(__no_sanitize__)
    #define STBSP__ASAN __attribute__((__no_sanitize__("address")))
   #elif __has_attribute(__no_sanitize_address__)
    #define STBSP__ASAN __attribute__((__no_sanitize_address__))
   #elif __has_attribute(__no_address_safety_analysis__)
    #define STBSP__ASAN __attribute__((__no_address_safety_analysis__))
   #endif
  #endif
 #endif
#elif defined(__GNUC__) && (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
 #if defined(__SANITIZE_ADDRESS__) && __SANITIZE_ADDRESS__
  #define STBSP__ASAN __attribute__((__no_sanitize_address__))
 #endif
#endif

#ifndef STBSP__ASAN
#define STBSP__ASAN
#endif

#ifdef STB_SPRINTF_STATIC
#define STBSP__PUBLICDEC static
#define STBSP__PUBLICDEF static STBSP__ASAN
#else
#ifdef __cplusplus
#define STBSP__PUBLICDEC extern "C"
#define STBSP__PUBLICDEF extern "C" STBSP__ASAN
#else
#define STBSP__PUBLICDEC extern
#define STBSP__PUBLICDEF STBSP__ASAN
#endif
#endif

#if defined(__has_attribute)
 #if __has_attribute(format)
   #define STBSP__ATTRIBUTE_FORMAT(fmt,va) __attribute__((format(printf,fmt,va)))
 #endif
#endif

#ifndef STBSP__ATTRIBUTE_FORMAT
#define STBSP__ATTRIBUTE_FORMAT(fmt,va)
#endif

#ifdef _MSC_VER
#define STBSP__NOTUSED(v)  (void)(v)
#else
#define STBSP__NOTUSED(v)  (void)sizeof(v)
#endif

#ifndef STB_SPRINTF_MIN
#define STB_SPRINTF_MIN 512 
#endif
typedef char *STBSP_SPRINTFCB(const char *buf, void *user, int len);

#ifndef STB_SPRINTF_DECORATE
#define STB_SPRINTF_DECORATE(name) stbsp_##name 
#endif

STBSP__PUBLICDEC int STB_SPRINTF_DECORATE(vsprintf)(char *buf, char const *fmt, va_list va);
STBSP__PUBLICDEC int STB_SPRINTF_DECORATE(vsnprintf)(char *buf, int count, char const *fmt, va_list va);
STBSP__PUBLICDEC int STB_SPRINTF_DECORATE(sprintf)(char *buf, char const *fmt, ...) STBSP__ATTRIBUTE_FORMAT(2,3);
STBSP__PUBLICDEC int STB_SPRINTF_DECORATE(snprintf)(char *buf, int count, char const *fmt, ...) STBSP__ATTRIBUTE_FORMAT(3,4);

STBSP__PUBLICDEC int STB_SPRINTF_DECORATE(vsprintfcb)(STBSP_SPRINTFCB *callback, void *user, char *buf, char const *fmt, va_list va);
STBSP__PUBLICDEC void STB_SPRINTF_DECORATE(set_separators)(char comma, char period);

#endif 

#ifdef STB_SPRINTF_IMPLEMENTATION

#define stbsp__uint32 unsigned int
#define stbsp__int32 signed int

#ifdef _MSC_VER
#define stbsp__uint64 unsigned __int64
#define stbsp__int64 signed __int64
#else
#define stbsp__uint64 unsigned long
#define stbsp__int64 signed long
#endif
#define stbsp__uint16 unsigned short

#ifndef stbsp__uintptr
#if defined(__ppc64__) || defined(__powerpc64__) || defined(__aarch64__) || defined(_M_X64) || defined(__x86_64__) || defined(__x86_64) || defined(__s390x__)
#define stbsp__uintptr stbsp__uint64
#else
#define stbsp__uintptr stbsp__uint32
#endif
#endif

#ifndef STB_SPRINTF_MSVC_MODE 
#if defined(_MSC_VER) && (_MSC_VER < 1900)
#define STB_SPRINTF_MSVC_MODE
#endif
#endif

#ifdef STB_SPRINTF_NOUNALIGNED 
#define STBSP__UNALIGNED(code)
#else
#define STBSP__UNALIGNED(code) code
#endif

#ifndef STB_SPRINTF_NOFLOAT

static stbsp__int32 stbsp__real_to_str(char const **start, stbsp__uint32 *len, char *out, stbsp__int32 *decimal_pos, double value, stbsp__uint32 frac_digits);
static stbsp__int32 stbsp__real_to_parts(stbsp__int64 *bits, stbsp__int32 *expo, double value);
#define STBSP__SPECIAL 0x7000
#endif

static char stbsp__period = '.';
static char stbsp__comma = ',';
static struct
{
   short temp; 
   char pair[201];
} stbsp__digitpair =
{
  0,
   "00010203040506070809101112131415161718192021222324"
   "25262728293031323334353637383940414243444546474849"
   "50515253545556575859606162636465666768697071727374"
   "75767778798081828384858687888990919293949596979899"
};

STBSP__PUBLICDEF void STB_SPRINTF_DECORATE(set_separators)(char pcomma, char pperiod)
{
   stbsp__period = pperiod;
   stbsp__comma = pcomma;
}

#define STBSP__LEFTJUST 1
#define STBSP__LEADINGPLUS 2
#define STBSP__LEADINGSPACE 4
#define STBSP__LEADING_0X 8
#define STBSP__LEADINGZERO 16
#define STBSP__INTMAX 32
#define STBSP__TRIPLET_COMMA 64
#define STBSP__NEGATIVE 128
#define STBSP__METRIC_SUFFIX 256
#define STBSP__HALFWIDTH 512
#define STBSP__METRIC_NOSPACE 1024
#define STBSP__METRIC_1024 2048
#define STBSP__METRIC_JEDEC 4096

static void stbsp__lead_sign(stbsp__uint32 fl, char *sign)
{
   sign[0] = 0;
   if (fl & STBSP__NEGATIVE) {
      sign[0] = 1;
      sign[1] = '-';
   } else if (fl & STBSP__LEADINGSPACE) {
      sign[0] = 1;
      sign[1] = ' ';
   } else if (fl & STBSP__LEADINGPLUS) {
      sign[0] = 1;
      sign[1] = '+';
   }
}

static STBSP__ASAN stbsp__uint32 stbsp__strlen_limited(char const *s, stbsp__uint32 limit)
{
   char const * sn = s;

   
   for (;;) {
      if (((stbsp__uintptr)sn & 3) == 0)
         break;

      if (!limit || *sn == 0)
         return (stbsp__uint32)(sn - s);

      ++sn;
      --limit;
   }

   
   
   
   
   
   while (limit >= 4) {
      stbsp__uint32 v = *(stbsp__uint32 *)sn;
      
      if ((v - 0x01010101) & (~v) & 0x80808080UL)
         break;

      sn += 4;
      limit -= 4;
   }

   
   while (limit && *sn) {
      ++sn;
      --limit;
   }

   return (stbsp__uint32)(sn - s);
}

STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(vsprintfcb)(STBSP_SPRINTFCB *callback, void *user, char *buf, char const *fmt, va_list va)
{
   static char hex[] = "0123456789abcdefxp";
   static char hexu[] = "0123456789ABCDEFXP";
   char *bf;
   char const *f;
   int tlen = 0;

   bf = buf;
   f = fmt;
   for (;;) {
      stbsp__int32 fw, pr, tz;
      stbsp__uint32 fl;

      
      #define stbsp__chk_cb_bufL(bytes)                        \
         {                                                     \
            int len = (int)(bf - buf);                         \
            if ((len + (bytes)) >= STB_SPRINTF_MIN) {          \
               tlen += len;                                    \
               if (0 == (bf = buf = callback(buf, user, len))) \
                  goto done;                                   \
            }                                                  \
         }
      #define stbsp__chk_cb_buf(bytes)    \
         {                                \
            if (callback) {               \
               stbsp__chk_cb_bufL(bytes); \
            }                             \
         }
      #define stbsp__flush_cb()                      \
         {                                           \
            stbsp__chk_cb_bufL(STB_SPRINTF_MIN - 1); \
         } 
      #define stbsp__cb_buf_clamp(cl, v)                \
         cl = v;                                        \
         if (callback) {                                \
            int lg = STB_SPRINTF_MIN - (int)(bf - buf); \
            if (cl > lg)                                \
               cl = lg;                                 \
         }

      
      for (;;) {
         while (((stbsp__uintptr)f) & 3) {
         schk1:
            if (f[0] == '%')
               goto scandd;
         schk2:
            if (f[0] == 0)
               goto endfmt;
            stbsp__chk_cb_buf(1);
            *bf++ = f[0];
            ++f;
         }
         for (;;) {
            
            
            
            stbsp__uint32 v, c;
            v = *(stbsp__uint32 *)f;
            c = (~v) & 0x80808080;
            if (((v ^ 0x25252525) - 0x01010101) & c)
               goto schk1;
            if ((v - 0x01010101) & c)
               goto schk2;
            if (callback)
               if ((STB_SPRINTF_MIN - (int)(bf - buf)) < 4)
                  goto schk1;
            #ifdef STB_SPRINTF_NOUNALIGNED
                if(((stbsp__uintptr)bf) & 3) {
                    bf[0] = f[0];
                    bf[1] = f[1];
                    bf[2] = f[2];
                    bf[3] = f[3];
                } else
            #endif
            {
                *(stbsp__uint32 *)bf = v;
            }
            bf += 4;
            f += 4;
         }
      }
   scandd:

      ++f;

      
      fw = 0;
      pr = -1;
      fl = 0;
      tz = 0;

      
      for (;;) {
         switch (f[0]) {
         
         case '-':
            fl |= STBSP__LEFTJUST;
            ++f;
            continue;
         
         case '+':
            fl |= STBSP__LEADINGPLUS;
            ++f;
            continue;
         
         case ' ':
            fl |= STBSP__LEADINGSPACE;
            ++f;
            continue;
         
         case '#':
            fl |= STBSP__LEADING_0X;
            ++f;
            continue;
         
         case '\'':
            fl |= STBSP__TRIPLET_COMMA;
            ++f;
            continue;
         
         case '$':
            if (fl & STBSP__METRIC_SUFFIX) {
               if (fl & STBSP__METRIC_1024) {
                  fl |= STBSP__METRIC_JEDEC;
               } else {
                  fl |= STBSP__METRIC_1024;
               }
            } else {
               fl |= STBSP__METRIC_SUFFIX;
            }
            ++f;
            continue;
         
         case '_':
            fl |= STBSP__METRIC_NOSPACE;
            ++f;
            continue;
         
         case '0':
            fl |= STBSP__LEADINGZERO;
            ++f;
            goto flags_done;
         default: goto flags_done;
         }
      }
   flags_done:

      
      if (f[0] == '*') {
         fw = va_arg(va, stbsp__uint32);
         ++f;
      } else {
         while ((f[0] >= '0') && (f[0] <= '9')) {
            fw = fw * 10 + f[0] - '0';
            f++;
         }
      }
      
      if (f[0] == '.') {
         ++f;
         if (f[0] == '*') {
            pr = va_arg(va, stbsp__uint32);
            ++f;
         } else {
            pr = 0;
            while ((f[0] >= '0') && (f[0] <= '9')) {
               pr = pr * 10 + f[0] - '0';
               f++;
            }
         }
      }

      
      switch (f[0]) {
      
      case 'h':
         fl |= STBSP__HALFWIDTH;
         ++f;
         if (f[0] == 'h')
            ++f;  
         break;
      
      case 'l':
         fl |= ((sizeof(long) == 8) ? STBSP__INTMAX : 0);
         ++f;
         if (f[0] == 'l') {
            fl |= STBSP__INTMAX;
            ++f;
         }
         break;
      
      case 'j':
         fl |= (sizeof(size_t) == 8) ? STBSP__INTMAX : 0;
         ++f;
         break;
      
      case 'z':
         fl |= (sizeof(ptrdiff_t) == 8) ? STBSP__INTMAX : 0;
         ++f;
         break;
      case 't':
         fl |= (sizeof(ptrdiff_t) == 8) ? STBSP__INTMAX : 0;
         ++f;
         break;
      
      case 'I':
         if ((f[1] == '6') && (f[2] == '4')) {
            fl |= STBSP__INTMAX;
            f += 3;
         } else if ((f[1] == '3') && (f[2] == '2')) {
            f += 3;
         } else {
            fl |= ((sizeof(void *) == 8) ? STBSP__INTMAX : 0);
            ++f;
         }
         break;
      default: break;
      }

      
      switch (f[0]) {
         #define STBSP__NUMSZ 512 
         char num[STBSP__NUMSZ];
         char lead[8];
         char tail[8];
         char *s;
         char const *h;
         stbsp__uint32 l, n, cs;
         stbsp__uint64 n64;
#ifndef STB_SPRINTF_NOFLOAT
         double fv;
#endif
         stbsp__int32 dp;
         char const *sn;

      case 's':
         
         s = va_arg(va, char *);
         if (s == 0)
            s = (char *)"null";
         
         
         l = stbsp__strlen_limited(s, (pr >= 0) ? pr : ~0u);
         lead[0] = 0;
         tail[0] = 0;
         pr = 0;
         dp = 0;
         cs = 0;
         
         goto scopy;

      case 'c': 
         
         s = num + STBSP__NUMSZ - 1;
         *s = (char)va_arg(va, int);
         l = 1;
         lead[0] = 0;
         tail[0] = 0;
         pr = 0;
         dp = 0;
         cs = 0;
         goto scopy;

      case 'n': 
      {
         int *d = va_arg(va, int *);
         *d = tlen + (int)(bf - buf);
      } break;

#ifdef STB_SPRINTF_NOFLOAT
      case 'A':              
      case 'a':              
      case 'G':              
      case 'g':              
      case 'E':              
      case 'e':              
      case 'f':              
         va_arg(va, double); 
         s = (char *)"No float";
         l = 8;
         lead[0] = 0;
         tail[0] = 0;
         pr = 0;
         cs = 0;
         STBSP__NOTUSED(dp);
         goto scopy;
#else
      case 'A': 
      case 'a': 
         h = (f[0] == 'A') ? hexu : hex;
         fv = va_arg(va, double);
         if (pr == -1)
            pr = 6; 
         
         if (stbsp__real_to_parts((stbsp__int64 *)&n64, &dp, fv))
            fl |= STBSP__NEGATIVE;

         s = num + 64;

         stbsp__lead_sign(fl, lead);

         if (dp == -1023)
            dp = (n64) ? -1022 : 0;
         else
            n64 |= (((stbsp__uint64)1) << 52);
         n64 <<= (64 - 56);
         if (pr < 15)
            n64 += ((((stbsp__uint64)8) << 56) >> (pr * 4));


#ifdef STB_SPRINTF_MSVC_MODE
         *s++ = '0';
         *s++ = 'x';
#else
         lead[1 + lead[0]] = '0';
         lead[2 + lead[0]] = 'x';
         lead[0] += 2;
#endif
         *s++ = h[(n64 >> 60) & 15];
         n64 <<= 4;
         if (pr)
            *s++ = stbsp__period;
         sn = s;

         
         n = pr;
         if (n > 13)
            n = 13;
         if (pr > (stbsp__int32)n)
            tz = pr - n;
         pr = 0;
         while (n--) {
            *s++ = h[(n64 >> 60) & 15];
            n64 <<= 4;
         }

         
         tail[1] = h[17];
         if (dp < 0) {
            tail[2] = '-';
            dp = -dp;
         } else
            tail[2] = '+';
         n = (dp >= 1000) ? 6 : ((dp >= 100) ? 5 : ((dp >= 10) ? 4 : 3));
         tail[0] = (char)n;
         for (;;) {
            tail[n] = '0' + dp % 10;
            if (n <= 3)
               break;
            --n;
            dp /= 10;
         }

         dp = (int)(s - sn);
         l = (int)(s - (num + 64));
         s = num + 64;
         cs = 1 + (3 << 24);
         goto scopy;

      case 'G': 
      case 'g': 
         h = (f[0] == 'G') ? hexu : hex;
         fv = va_arg(va, double);
         if (pr == -1)
            pr = 6;
         else if (pr == 0)
            pr = 1; 
         
         if (stbsp__real_to_str(&sn, &l, num, &dp, fv, (pr - 1) | 0x80000000))
            fl |= STBSP__NEGATIVE;

         
         n = pr;
         if (l > (stbsp__uint32)pr)
            l = pr;
         while ((l > 1) && (pr) && (sn[l - 1] == '0')) {
            --pr;
            --l;
         }

         
         if ((dp <= -4) || (dp > (stbsp__int32)n)) {
            if (pr > (stbsp__int32)l)
               pr = l - 1;
            else if (pr)
               --pr; 
            goto doexpfromg;
         }
         
         if (dp > 0) {
            pr = (dp < (stbsp__int32)l) ? l - dp : 0;
         } else {
            pr = -dp + ((pr > (stbsp__int32)l) ? (stbsp__int32) l : pr);
         }
         goto dofloatfromg;

      case 'E': 
      case 'e': 
         h = (f[0] == 'E') ? hexu : hex;
         fv = va_arg(va, double);
         if (pr == -1)
            pr = 6; 
         
         if (stbsp__real_to_str(&sn, &l, num, &dp, fv, pr | 0x80000000))
            fl |= STBSP__NEGATIVE;
      doexpfromg:
         tail[0] = 0;
         stbsp__lead_sign(fl, lead);
         if (dp == STBSP__SPECIAL) {
            s = (char *)sn;
            cs = 0;
            pr = 0;
            goto scopy;
         }
         s = num + 64;
         
         *s++ = sn[0];

         if (pr)
            *s++ = stbsp__period;

         
         if ((l - 1) > (stbsp__uint32)pr)
            l = pr + 1;
         for (n = 1; n < l; n++)
            *s++ = sn[n];
         
         tz = pr - (l - 1);
         pr = 0;
         
         tail[1] = h[0xe];
         dp -= 1;
         if (dp < 0) {
            tail[2] = '-';
            dp = -dp;
         } else
            tail[2] = '+';
#ifdef STB_SPRINTF_MSVC_MODE
         n = 5;
#else
         n = (dp >= 100) ? 5 : 4;
#endif
         tail[0] = (char)n;
         for (;;) {
            tail[n] = '0' + dp % 10;
            if (n <= 3)
               break;
            --n;
            dp /= 10;
         }
         cs = 1 + (3 << 24); 
         goto flt_lead;

      case 'f': 
         fv = va_arg(va, double);
      doafloat:
         
         if (fl & STBSP__METRIC_SUFFIX) {
            double divisor;
            divisor = 1000.0f;
            if (fl & STBSP__METRIC_1024)
               divisor = 1024.0;
            while (fl < 0x4000000) {
               if ((fv < divisor) && (fv > -divisor))
                  break;
               fv /= divisor;
               fl += 0x1000000;
            }
         }
         if (pr == -1)
            pr = 6; 
         
         if (stbsp__real_to_str(&sn, &l, num, &dp, fv, pr))
            fl |= STBSP__NEGATIVE;
      dofloatfromg:
         tail[0] = 0;
         stbsp__lead_sign(fl, lead);
         if (dp == STBSP__SPECIAL) {
            s = (char *)sn;
            cs = 0;
            pr = 0;
            goto scopy;
         }
         s = num + 64;

         
         if (dp <= 0) {
            stbsp__int32 i;
            
            *s++ = '0';
            if (pr)
               *s++ = stbsp__period;
            n = -dp;
            if ((stbsp__int32)n > pr)
               n = pr;
            i = n;
            while (i) {
               if ((((stbsp__uintptr)s) & 3) == 0)
                  break;
               *s++ = '0';
               --i;
            }
            while (i >= 4) {
               *(stbsp__uint32 *)s = 0x30303030;
               s += 4;
               i -= 4;
            }
            while (i) {
               *s++ = '0';
               --i;
            }
            if ((stbsp__int32)(l + n) > pr)
               l = pr - n;
            i = l;
            while (i) {
               *s++ = *sn++;
               --i;
            }
            tz = pr - (n + l);
            cs = 1 + (3 << 24); 
         } else {
            cs = (fl & STBSP__TRIPLET_COMMA) ? ((600 - (stbsp__uint32)dp) % 3) : 0;
            if ((stbsp__uint32)dp >= l) {
               
               n = 0;
               for (;;) {
                  if ((fl & STBSP__TRIPLET_COMMA) && (++cs == 4)) {
                     cs = 0;
                     *s++ = stbsp__comma;
                  } else {
                     *s++ = sn[n];
                     ++n;
                     if (n >= l)
                        break;
                  }
               }
               if (n < (stbsp__uint32)dp) {
                  n = dp - n;
                  if ((fl & STBSP__TRIPLET_COMMA) == 0) {
                     while (n) {
                        if ((((stbsp__uintptr)s) & 3) == 0)
                           break;
                        *s++ = '0';
                        --n;
                     }
                     while (n >= 4) {
                        *(stbsp__uint32 *)s = 0x30303030;
                        s += 4;
                        n -= 4;
                     }
                  }
                  while (n) {
                     if ((fl & STBSP__TRIPLET_COMMA) && (++cs == 4)) {
                        cs = 0;
                        *s++ = stbsp__comma;
                     } else {
                        *s++ = '0';
                        --n;
                     }
                  }
               }
               cs = (int)(s - (num + 64)) + (3 << 24); 
               if (pr) {
                  *s++ = stbsp__period;
                  tz = pr;
               }
            } else {
               
               n = 0;
               for (;;) {
                  if ((fl & STBSP__TRIPLET_COMMA) && (++cs == 4)) {
                     cs = 0;
                     *s++ = stbsp__comma;
                  } else {
                     *s++ = sn[n];
                     ++n;
                     if (n >= (stbsp__uint32)dp)
                        break;
                  }
               }
               cs = (int)(s - (num + 64)) + (3 << 24); 
               if (pr)
                  *s++ = stbsp__period;
               if ((l - dp) > (stbsp__uint32)pr)
                  l = pr + dp;
               while (n < l) {
                  *s++ = sn[n];
                  ++n;
               }
               tz = pr - (l - dp);
            }
         }
         pr = 0;

         
         if (fl & STBSP__METRIC_SUFFIX) {
            char idx;
            idx = 1;
            if (fl & STBSP__METRIC_NOSPACE)
               idx = 0;
            tail[0] = idx;
            tail[1] = ' ';
            {
               if (fl >> 24) { 
                  if (fl & STBSP__METRIC_1024)
                     tail[idx + 1] = "_KMGT"[fl >> 24];
                  else
                     tail[idx + 1] = "_kMGT"[fl >> 24];
                  idx++;
                  
                  if (fl & STBSP__METRIC_1024 && !(fl & STBSP__METRIC_JEDEC)) {
                     tail[idx + 1] = 'i';
                     idx++;
                  }
                  tail[0] = idx;
               }
            }
         };

      flt_lead:
         
         l = (stbsp__uint32)(s - (num + 64));
         s = num + 64;
         goto scopy;
#endif

      case 'B': 
      case 'b': 
         h = (f[0] == 'B') ? hexu : hex;
         lead[0] = 0;
         if (fl & STBSP__LEADING_0X) {
            lead[0] = 2;
            lead[1] = '0';
            lead[2] = h[0xb];
         }
         l = (8 << 4) | (1 << 8);
         goto radixnum;

      case 'o': 
         h = hexu;
         lead[0] = 0;
         if (fl & STBSP__LEADING_0X) {
            lead[0] = 1;
            lead[1] = '0';
         }
         l = (3 << 4) | (3 << 8);
         goto radixnum;

      case 'p': 
         fl |= (sizeof(void *) == 8) ? STBSP__INTMAX : 0;
         pr = sizeof(void *) * 2;
         fl &= ~STBSP__LEADINGZERO; 
                                    

      case 'X': 
      case 'x': 
         h = (f[0] == 'X') ? hexu : hex;
         l = (4 << 4) | (4 << 8);
         lead[0] = 0;
         if (fl & STBSP__LEADING_0X) {
            lead[0] = 2;
            lead[1] = '0';
            lead[2] = h[16];
         }
      radixnum:
         
         if (fl & STBSP__INTMAX)
            n64 = va_arg(va, stbsp__uint64);
         else
            n64 = va_arg(va, stbsp__uint32);

         s = num + STBSP__NUMSZ;
         dp = 0;
         
         tail[0] = 0;
         if (n64 == 0) {
            lead[0] = 0;
            if (pr == 0) {
               l = 0;
               cs = 0;
               goto scopy;
            }
         }
         
         for (;;) {
            *--s = h[n64 & ((1 << (l >> 8)) - 1)];
            n64 >>= (l >> 8);
            if (!((n64) || ((stbsp__int32)((num + STBSP__NUMSZ) - s) < pr)))
               break;
            if (fl & STBSP__TRIPLET_COMMA) {
               ++l;
               if ((l & 15) == ((l >> 4) & 15)) {
                  l &= ~15;
                  *--s = stbsp__comma;
               }
            }
         };
         
         cs = (stbsp__uint32)((num + STBSP__NUMSZ) - s) + ((((l >> 4) & 15)) << 24);
         
         l = (stbsp__uint32)((num + STBSP__NUMSZ) - s);
         
         goto scopy;

      case 'u': 
      case 'i':
      case 'd': 
         
         if (fl & STBSP__INTMAX) {
            stbsp__int64 i64 = va_arg(va, stbsp__int64);
            n64 = (stbsp__uint64)i64;
            if ((f[0] != 'u') && (i64 < 0)) {
               n64 = (stbsp__uint64)-i64;
               fl |= STBSP__NEGATIVE;
            }
         } else {
            stbsp__int32 i = va_arg(va, stbsp__int32);
            n64 = (stbsp__uint32)i;
            if ((f[0] != 'u') && (i < 0)) {
               n64 = (stbsp__uint32)-i;
               fl |= STBSP__NEGATIVE;
            }
         }

#ifndef STB_SPRINTF_NOFLOAT
         if (fl & STBSP__METRIC_SUFFIX) {
            if (n64 < 1024)
               pr = 0;
            else if (pr == -1)
               pr = 1;
            fv = (double)(stbsp__int64)n64;
            goto doafloat;
         }
#endif

         
         s = num + STBSP__NUMSZ;
         l = 0;

         for (;;) {
            
            char *o = s - 8;
            if (n64 >= 100000000) {
               n = (stbsp__uint32)(n64 % 100000000);
               n64 /= 100000000;
            } else {
               n = (stbsp__uint32)n64;
               n64 = 0;
            }
            if ((fl & STBSP__TRIPLET_COMMA) == 0) {
               do {
                  s -= 2;
                  *(stbsp__uint16 *)s = *(stbsp__uint16 *)&stbsp__digitpair.pair[(n % 100) * 2];
                  n /= 100;
               } while (n);
            }
            while (n) {
               if ((fl & STBSP__TRIPLET_COMMA) && (l++ == 3)) {
                  l = 0;
                  *--s = stbsp__comma;
                  --o;
               } else {
                  *--s = (char)(n % 10) + '0';
                  n /= 10;
               }
            }
            if (n64 == 0) {
               if ((s[0] == '0') && (s != (num + STBSP__NUMSZ)))
                  ++s;
               break;
            }
            while (s != o)
               if ((fl & STBSP__TRIPLET_COMMA) && (l++ == 3)) {
                  l = 0;
                  *--s = stbsp__comma;
                  --o;
               } else {
                  *--s = '0';
               }
         }

         tail[0] = 0;
         stbsp__lead_sign(fl, lead);

         
         l = (stbsp__uint32)((num + STBSP__NUMSZ) - s);
         if (l == 0) {
            *--s = '0';
            l = 1;
         }
         cs = l + (3 << 24);
         if (pr < 0)
            pr = 0;

      scopy:
         
         if (pr < (stbsp__int32)l)
            pr = l;
         n = pr + lead[0] + tail[0] + tz;
         if (fw < (stbsp__int32)n)
            fw = n;
         fw -= n;
         pr -= l;

         
         if ((fl & STBSP__LEFTJUST) == 0) {
            if (fl & STBSP__LEADINGZERO) 
            {
               pr = (fw > pr) ? fw : pr;
               fw = 0;
            } else {
               fl &= ~STBSP__TRIPLET_COMMA; 
            }
         }

         
         if (fw + pr) {
            stbsp__int32 i;
            stbsp__uint32 c;

            
            if ((fl & STBSP__LEFTJUST) == 0)
               while (fw > 0) {
                  stbsp__cb_buf_clamp(i, fw);
                  fw -= i;
                  while (i) {
                     if ((((stbsp__uintptr)bf) & 3) == 0)
                        break;
                     *bf++ = ' ';
                     --i;
                  }
                  while (i >= 4) {
                     *(stbsp__uint32 *)bf = 0x20202020;
                     bf += 4;
                     i -= 4;
                  }
                  while (i) {
                     *bf++ = ' ';
                     --i;
                  }
                  stbsp__chk_cb_buf(1);
               }

            
            sn = lead + 1;
            while (lead[0]) {
               stbsp__cb_buf_clamp(i, lead[0]);
               lead[0] -= (char)i;
               while (i) {
                  *bf++ = *sn++;
                  --i;
               }
               stbsp__chk_cb_buf(1);
            }

            
            c = cs >> 24;
            cs &= 0xffffff;
            cs = (fl & STBSP__TRIPLET_COMMA) ? ((stbsp__uint32)(c - ((pr + cs) % (c + 1)))) : 0;
            while (pr > 0) {
               stbsp__cb_buf_clamp(i, pr);
               pr -= i;
               if ((fl & STBSP__TRIPLET_COMMA) == 0) {
                  while (i) {
                     if ((((stbsp__uintptr)bf) & 3) == 0)
                        break;
                     *bf++ = '0';
                     --i;
                  }
                  while (i >= 4) {
                     *(stbsp__uint32 *)bf = 0x30303030;
                     bf += 4;
                     i -= 4;
                  }
               }
               while (i) {
                  if ((fl & STBSP__TRIPLET_COMMA) && (cs++ == c)) {
                     cs = 0;
                     *bf++ = stbsp__comma;
                  } else
                     *bf++ = '0';
                  --i;
               }
               stbsp__chk_cb_buf(1);
            }
         }

         
         sn = lead + 1;
         while (lead[0]) {
            stbsp__int32 i;
            stbsp__cb_buf_clamp(i, lead[0]);
            lead[0] -= (char)i;
            while (i) {
               *bf++ = *sn++;
               --i;
            }
            stbsp__chk_cb_buf(1);
         }

         
         n = l;
         while (n) {
            stbsp__int32 i;
            stbsp__cb_buf_clamp(i, n);
            n -= i;
            STBSP__UNALIGNED(while (i >= 4) {
               *(stbsp__uint32 volatile *)bf = *(stbsp__uint32 volatile *)s;
               bf += 4;
               s += 4;
               i -= 4;
            })
            while (i) {
               *bf++ = *s++;
               --i;
            }
            stbsp__chk_cb_buf(1);
         }

         
         while (tz) {
            stbsp__int32 i;
            stbsp__cb_buf_clamp(i, tz);
            tz -= i;
            while (i) {
               if ((((stbsp__uintptr)bf) & 3) == 0)
                  break;
               *bf++ = '0';
               --i;
            }
            while (i >= 4) {
               *(stbsp__uint32 *)bf = 0x30303030;
               bf += 4;
               i -= 4;
            }
            while (i) {
               *bf++ = '0';
               --i;
            }
            stbsp__chk_cb_buf(1);
         }

         
         sn = tail + 1;
         while (tail[0]) {
            stbsp__int32 i;
            stbsp__cb_buf_clamp(i, tail[0]);
            tail[0] -= (char)i;
            while (i) {
               *bf++ = *sn++;
               --i;
            }
            stbsp__chk_cb_buf(1);
         }

         
         if (fl & STBSP__LEFTJUST)
            if (fw > 0) {
               while (fw) {
                  stbsp__int32 i;
                  stbsp__cb_buf_clamp(i, fw);
                  fw -= i;
                  while (i) {
                     if ((((stbsp__uintptr)bf) & 3) == 0)
                        break;
                     *bf++ = ' ';
                     --i;
                  }
                  while (i >= 4) {
                     *(stbsp__uint32 *)bf = 0x20202020;
                     bf += 4;
                     i -= 4;
                  }
                  while (i--)
                     *bf++ = ' ';
                  stbsp__chk_cb_buf(1);
               }
            }
         break;

      default: 
         s = num + STBSP__NUMSZ - 1;
         *s = f[0];
         l = 1;
         fw = fl = 0;
         lead[0] = 0;
         tail[0] = 0;
         pr = 0;
         dp = 0;
         cs = 0;
         goto scopy;
      }
      ++f;
   }
endfmt:

   if (!callback)
      *bf = 0;
   else
      stbsp__flush_cb();

done:
   return tlen + (int)(bf - buf);
}


#undef STBSP__LEFTJUST
#undef STBSP__LEADINGPLUS
#undef STBSP__LEADINGSPACE
#undef STBSP__LEADING_0X
#undef STBSP__LEADINGZERO
#undef STBSP__INTMAX
#undef STBSP__TRIPLET_COMMA
#undef STBSP__NEGATIVE
#undef STBSP__METRIC_SUFFIX
#undef STBSP__NUMSZ
#undef stbsp__chk_cb_bufL
#undef stbsp__chk_cb_buf
#undef stbsp__flush_cb
#undef stbsp__cb_buf_clamp




STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(sprintf)(char *buf, char const *fmt, ...)
{
   int result;
   va_list va;
   va_start(va, fmt);
   result = STB_SPRINTF_DECORATE(vsprintfcb)(0, 0, buf, fmt, va);
   va_end(va);
   return result;
}

typedef struct stbsp__context {
   char *buf;
   int count;
   int length;
   char tmp[STB_SPRINTF_MIN];
} stbsp__context;

static char *stbsp__clamp_callback(const char *buf, void *user, int len)
{
   stbsp__context *c = (stbsp__context *)user;
   c->length += len;

   if (len > c->count)
      len = c->count;

   if (len) {
      if (buf != c->buf) {
         const char *s, *se;
         char *d;
         d = c->buf;
         s = buf;
         se = buf + len;
         do {
            *d++ = *s++;
         } while (s < se);
      }
      c->buf += len;
      c->count -= len;
   }

   if (c->count <= 0)
      return c->tmp;
   return (c->count >= STB_SPRINTF_MIN) ? c->buf : c->tmp; 
}

static char * stbsp__count_clamp_callback( const char * buf, void * user, int len )
{
   stbsp__context * c = (stbsp__context*)user;
   (void) sizeof(buf);

   c->length += len;
   return c->tmp; 
}

STBSP__PUBLICDEF int STB_SPRINTF_DECORATE( vsnprintf )( char * buf, int count, char const * fmt, va_list va )
{
   stbsp__context c;

   if ( (count == 0) && !buf )
   {
      c.length = 0;

      STB_SPRINTF_DECORATE( vsprintfcb )( stbsp__count_clamp_callback, &c, c.tmp, fmt, va );
   }
   else
   {
      int l;

      c.buf = buf;
      c.count = count;
      c.length = 0;

      STB_SPRINTF_DECORATE( vsprintfcb )( stbsp__clamp_callback, &c, stbsp__clamp_callback(0,&c,0), fmt, va );

      
      l = (int)( c.buf - buf );
      if ( l >= count ) 
         l = count - 1;
      buf[l] = 0;
   }

   return c.length;
}

STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(snprintf)(char *buf, int count, char const *fmt, ...)
{
   int result;
   va_list va;
   va_start(va, fmt);

   result = STB_SPRINTF_DECORATE(vsnprintf)(buf, count, fmt, va);
   va_end(va);

   return result;
}

STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(vsprintf)(char *buf, char const *fmt, va_list va)
{
   return STB_SPRINTF_DECORATE(vsprintfcb)(0, 0, buf, fmt, va);
}




#ifndef STB_SPRINTF_NOFLOAT


#define STBSP__COPYFP(dest, src)                   \
   {                                               \
      int cn;                                      \
      for (cn = 0; cn < 8; cn++)                   \
         ((char *)&dest)[cn] = ((char *)&src)[cn]; \
   }


static stbsp__int32 stbsp__real_to_parts(stbsp__int64 *bits, stbsp__int32 *expo, double value)
{
   double d;
   stbsp__int64 b = 0;

   
   d = value;

   STBSP__COPYFP(b, d);

   *bits = b & ((((stbsp__uint64)1) << 52) - 1);
   *expo = (stbsp__int32)(((b >> 52) & 2047) - 1023);

   return (stbsp__int32)((stbsp__uint64) b >> 63);
}

static double const stbsp__bot[23] = {
/*    1e+000, 1e+001, 1e+002, 1e+003, 1e+004, 1e+005, 1e+006, 1e+007, 1e+008, 1e+009, 1e+010, 1e+011, */
/*    1e+012, 1e+013, 1e+014, 1e+015, 1e+016, 1e+017, 1e+018, 1e+019, 1e+020, 1e+021, 1e+022 */
0
};
static double const stbsp__negbot[22] = {
0
/*    1e-001, 1e-002, 1e-003, 1e-004, 1e-005, 1e-006, 1e-007, 1e-008, 1e-009, 1e-010, 1e-011, */
/*    1e-012, 1e-013, 1e-014, 1e-015, 1e-016, 1e-017, 1e-018, 1e-019, 1e-020, 1e-021, 1e-022 */
};
static double const stbsp__negboterr[22] = {
0
/*    -5.551115123125783e-018,  -2.0816681711721684e-019, -2.0816681711721686e-020, -4.7921736023859299e-021, -8.1803053914031305e-022, 4.5251888174113741e-023, */
/*    4.5251888174113739e-024,  -2.0922560830128471e-025, -6.2281591457779853e-026, -3.6432197315497743e-027, 6.0503030718060191e-028,  2.0113352370744385e-029, */
/*    -3.0373745563400371e-030, 1.1806906454401013e-032,  -7.7705399876661076e-032, 2.0902213275965398e-033,  -7.1542424054621921e-034, -7.1542424054621926e-035, */
/*    2.4754073164739869e-036,  5.4846728545790429e-037,  9.2462547772103625e-038,  -4.8596774326570872e-039 */
};
static double const stbsp__top[13] = {
0
/*    1e+023, 1e+046, 1e+069, 1e+092, 1e+115, 1e+138, 1e+161, 1e+184, 1e+207, 1e+230, 1e+253, 1e+276, 1e+299 */
};
static double const stbsp__negtop[13] = {
0
/*    1e-023, 1e-046, 1e-069, 1e-092, 1e-115, 1e-138, 1e-161, 1e-184, 1e-207, 1e-230, 1e-253, 1e-276, 1e-299 */
};
static double const stbsp__toperr[13] = {
0
/*    8388608, */
/*    6.8601809640529717e+028, */
/*    -7.253143638152921e+052, */
/*    -4.3377296974619174e+075, */
/*    -1.5559416129466825e+098, */
/*    -3.2841562489204913e+121, */
/*    -3.7745893248228135e+144, */
/*    -1.7356668416969134e+167, */
/*    -3.8893577551088374e+190, */
/*    -9.9566444326005119e+213, */
/*    6.3641293062232429e+236, */
/*    -5.2069140800249813e+259, */
/*    -5.2504760255204387e+282 */
};
static double const stbsp__negtoperr[13] = {
0
/*    3.9565301985100693e-040,  -2.299904345391321e-063,  3.6506201437945798e-086,  1.1875228833981544e-109, */
/*    -5.0644902316928607e-132, -6.7156837247865426e-155, -2.812077463003139e-178,  -5.7778912386589953e-201, */
/*    7.4997100559334532e-224,  -4.6439668915134491e-247, -6.3691100762962136e-270, -9.436808465446358e-293, */
/*    8.0970921678014997e-317 */
};

#if defined(_MSC_VER) && (_MSC_VER <= 1200)
static stbsp__uint64 const stbsp__powten[20] = {
   1,
   10,
   100,
   1000,
   10000,
   100000,
   1000000,
   10000000,
   100000000,
   1000000000,
   10000000000,
   100000000000,
   1000000000000,
   10000000000000,
   100000000000000,
   1000000000000000,
   10000000000000000,
   100000000000000000,
   1000000000000000000,
   10000000000000000000U
};
#define stbsp__tento19th ((stbsp__uint64)1000000000000000000)
#else
static stbsp__uint64 const stbsp__powten[20] = {
   1,
   10,
   100,
   1000,
   10000,
   100000,
   1000000,
   10000000,
   100000000,
   1000000000,
   10000000000ULL,
   100000000000ULL,
   1000000000000ULL,
   10000000000000ULL,
   100000000000000ULL,
   1000000000000000ULL,
   10000000000000000ULL,
   100000000000000000ULL,
   1000000000000000000ULL,
   10000000000000000000ULL
};
#define stbsp__tento19th (1000000000000000000ULL)
#endif

#define stbsp__ddmulthi(oh, ol, xh, yh)                            \
   {                                                               \
      double ahi = 0, alo, bhi = 0, blo;                           \
      stbsp__int64 bt;                                             \
      oh = xh * yh;                                                \
      STBSP__COPYFP(bt, xh);                                       \
      bt &= ((~(stbsp__uint64)0) << 27);                           \
      STBSP__COPYFP(ahi, bt);                                      \
      alo = xh - ahi;                                              \
      STBSP__COPYFP(bt, yh);                                       \
      bt &= ((~(stbsp__uint64)0) << 27);                           \
      STBSP__COPYFP(bhi, bt);                                      \
      blo = yh - bhi;                                              \
      ol = ((ahi * bhi - oh) + ahi * blo + alo * bhi) + alo * blo; \
   }

#define stbsp__ddtoS64(ob, xh, xl)          \
   {                                        \
      double ahi = 0, alo, vh, t;           \
      ob = (stbsp__int64)xh;                \
      vh = (double)ob;                      \
      ahi = (xh - vh);                      \
      t = (ahi - xh);                       \
      alo = (xh - (ahi - t)) - (vh + t);    \
      ob += (stbsp__int64)(ahi + alo + xl); \
   }

#define stbsp__ddrenorm(oh, ol) \
   {                            \
      double s;                 \
      s = oh + ol;              \
      ol = ol - (s - oh);       \
      oh = s;                   \
   }

#define stbsp__ddmultlo(oh, ol, xh, xl, yh, yl) ol = ol + (xh * yl + xl * yh);

#define stbsp__ddmultlos(oh, ol, xh, yl) ol = ol + (xh * yl);

static void stbsp__raise_to_power10(double *ohi, double *olo, double d, stbsp__int32 power) 
{
   double ph, pl;
   if ((power >= 0) && (power <= 22)) {
      stbsp__ddmulthi(ph, pl, d, stbsp__bot[power]);
   } else {
      stbsp__int32 e, et, eb;
      double p2h, p2l;

      e = power;
      if (power < 0)
         e = -e;
      et = (e * 0x2c9) >> 14; /* %23 */
      if (et > 13)
         et = 13;
      eb = e - (et * 23);

      ph = d;
      pl = 0.0;
      if (power < 0) {
         if (eb) {
            --eb;
            stbsp__ddmulthi(ph, pl, d, stbsp__negbot[eb]);
            stbsp__ddmultlos(ph, pl, d, stbsp__negboterr[eb]);
         }
         if (et) {
            stbsp__ddrenorm(ph, pl);
            --et;
            stbsp__ddmulthi(p2h, p2l, ph, stbsp__negtop[et]);
            stbsp__ddmultlo(p2h, p2l, ph, pl, stbsp__negtop[et], stbsp__negtoperr[et]);
            ph = p2h;
            pl = p2l;
         }
      } else {
         if (eb) {
            e = eb;
            if (eb > 22)
               eb = 22;
            e -= eb;
            stbsp__ddmulthi(ph, pl, d, stbsp__bot[eb]);
            if (e) {
               stbsp__ddrenorm(ph, pl);
               stbsp__ddmulthi(p2h, p2l, ph, stbsp__bot[e]);
               stbsp__ddmultlos(p2h, p2l, stbsp__bot[e], pl);
               ph = p2h;
               pl = p2l;
            }
         }
         if (et) {
            stbsp__ddrenorm(ph, pl);
            --et;
            stbsp__ddmulthi(p2h, p2l, ph, stbsp__top[et]);
            stbsp__ddmultlo(p2h, p2l, ph, pl, stbsp__top[et], stbsp__toperr[et]);
            ph = p2h;
            pl = p2l;
         }
      }
   }
   stbsp__ddrenorm(ph, pl);
   *ohi = ph;
   *olo = pl;
}





static stbsp__int32 stbsp__real_to_str(char const **start, stbsp__uint32 *len, char *out, stbsp__int32 *decimal_pos, double value, stbsp__uint32 frac_digits)
{
   double d;
   stbsp__int64 bits = 0;
   stbsp__int32 expo, e, ng, tens;

   d = value;
   STBSP__COPYFP(bits, d);
   expo = (stbsp__int32)((bits >> 52) & 2047);
   ng = (stbsp__int32)((stbsp__uint64) bits >> 63);
   if (ng)
      d = -d;

   if (expo == 2047) 
   {
      *start = (bits & ((((stbsp__uint64)1) << 52) - 1)) ? "NaN" : "Inf";
      *decimal_pos = STBSP__SPECIAL;
      *len = 3;
      return ng;
   }

   if (expo == 0) 
   {
      if (((stbsp__uint64) bits << 1) == 0) 
      {
         *decimal_pos = 1;
         *start = out;
         out[0] = '0';
         *len = 1;
         return ng;
      }
      
      {
         stbsp__int64 v = ((stbsp__uint64)1) << 51;
         while ((bits & v) == 0) {
            --expo;
            v >>= 1;
         }
      }
   }

   
   {
      double ph, pl;

      
      tens = expo - 1023;
      tens = (tens < 0) ? ((tens * 617) / 2048) : (((tens * 1233) / 4096) + 1);

      
      stbsp__raise_to_power10(&ph, &pl, d, 18 - tens);

      
      stbsp__ddtoS64(bits, ph, pl);

      
      if (((stbsp__uint64)bits) >= stbsp__tento19th)
         ++tens;
   }

   
   frac_digits = (frac_digits & 0x80000000) ? ((frac_digits & 0x7ffffff) + 1) : (tens + frac_digits);
   if ((frac_digits < 24)) {
      stbsp__uint32 dg = 1;
      if ((stbsp__uint64)bits >= stbsp__powten[9])
         dg = 10;
      while ((stbsp__uint64)bits >= stbsp__powten[dg]) {
         ++dg;
         if (dg == 20)
            goto noround;
      }
      if (frac_digits < dg) {
         stbsp__uint64 r;
         
         e = dg - frac_digits;
         if ((stbsp__uint32)e >= 24)
            goto noround;
         r = stbsp__powten[e];
         bits = bits + (r / 2);
         if ((stbsp__uint64)bits >= stbsp__powten[dg])
            ++tens;
         bits /= r;
      }
   noround:;
   }

   
   if (bits) {
      stbsp__uint32 n;
      for (;;) {
         if (bits <= 0xffffffff)
            break;
         if (bits % 1000)
            goto donez;
         bits /= 1000;
      }
      n = (stbsp__uint32)bits;
      while ((n % 1000) == 0)
         n /= 1000;
      bits = n;
   donez:;
   }

   
   out += 64;
   e = 0;
   for (;;) {
      stbsp__uint32 n;
      char *o = out - 8;
      
      if (bits >= 100000000) {
         n = (stbsp__uint32)(bits % 100000000);
         bits /= 100000000;
      } else {
         n = (stbsp__uint32)bits;
         bits = 0;
      }
      while (n) {
         out -= 2;
         *(stbsp__uint16 *)out = *(stbsp__uint16 *)&stbsp__digitpair.pair[(n % 100) * 2];
         n /= 100;
         e += 2;
      }
      if (bits == 0) {
         if ((e) && (out[0] == '0')) {
            ++out;
            --e;
         }
         break;
      }
      while (out != o) {
         *--out = '0';
         ++e;
      }
   }

   *decimal_pos = tens;
   *start = out;
   *len = e;
   return ng;
}

#undef stbsp__ddmulthi
#undef stbsp__ddrenorm
#undef stbsp__ddmultlo
#undef stbsp__ddmultlos
#undef STBSP__SPECIAL
#undef STBSP__COPYFP

#endif 


#undef stbsp__uint16
#undef stbsp__uint32
#undef stbsp__int32
#undef stbsp__uint64
#undef stbsp__int64
#undef STBSP__UNALIGNED

#endif 

/*
------------------------------------------------------------------------------
This software is available under 2 licenses -- choose whichever you prefer.
------------------------------------------------------------------------------
ALTERNATIVE A - MIT License
Copyright (c) 2017 Sean Barrett
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
------------------------------------------------------------------------------
ALTERNATIVE B - Public Domain (www.unlicense.org)
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
software, either in source code form or as a compiled binary, for any purpose,
commercial or non-commercial, and by any means.
In jurisdictions that recognize copyright laws, the author or authors of this
software dedicate any and all copyright interest in the software to the public
domain. We make this dedication for the benefit of the public at large and to
the detriment of our heirs and successors. We intend this dedication to be an
overt act of relinquishment in perpetuity of all present and future rights to
this software under copyright law.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
------------------------------------------------------------------------------
*/