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  • Committer: Dan
  • Date: 2011-11-03 00:18:13 UTC
  • Revision ID: dan@waxworlds.org-20111103001813-gwefcqb2m5mk1ye2
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1
 
/*      Copyright (C) 2004 Garrett A. Kajmowicz
2
 
 
3
 
        This file is part of the uClibc++ Library.
4
 
 
5
 
        This library is free software; you can redistribute it and/or
6
 
        modify it under the terms of the GNU Lesser General Public
7
 
        License as published by the Free Software Foundation; either
8
 
        version 2.1 of the License, or (at your option) any later version.
9
 
 
10
 
        This library is distributed in the hope that it will be useful,
11
 
        but WITHOUT ANY WARRANTY; without even the implied warranty of
12
 
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 
        Lesser General Public License for more details.
14
 
 
15
 
        You should have received a copy of the GNU Lesser General Public
16
 
        License along with this library; if not, write to the Free Software
17
 
        Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18
 
*/
19
 
 
20
 
#include <basic_definitions>
21
 
#include <cstddef>
22
 
#include <ios>
23
 
#include <cctype>
24
 
#include <string>
25
 
 
26
 
#ifndef __STD_HEADER_OSTREAM_HELPERS
27
 
#define __STD_HEADER_OSTREAM_HELPERS 1
28
 
 
29
 
#pragma GCC visibility push(default)
30
 
 
31
 
namespace std{
32
 
 
33
 
        /* We are making the following template class for serveral reasons.  Firstly,
34
 
         * we want to keep the main ostream code neat and tidy.  Secondly, we want it
35
 
         * to be easy to do partial specialization of the ostream code so that it can
36
 
         * be expanded and put into the library.  This will allow us to make application
37
 
         * code smaller at the expense of increased library size.  This is a fair
38
 
         * trade-off when there are multiple applications being compiled.  Also, this
39
 
         * feature will be used optionally via configuration options.  It will also
40
 
         * allow us to keep the code bases in sync, dramatically simplifying the
41
 
         * maintenance required.  We specialized for char because wchar and others
42
 
         * require different scanf functions
43
 
         */
44
 
 
45
 
 
46
 
 
47
 
        template <class traits, class charT, class dataType> class _UCXXEXPORT __ostream_printout{
48
 
        public:
49
 
                static void printout(basic_ostream<charT,traits>& stream, const dataType n);
50
 
        };
51
 
 
52
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, signed long int>{
53
 
        public:
54
 
                static void printout(basic_ostream<char, traits >& stream, const signed long int n)
55
 
                {
56
 
                        char buffer[20];
57
 
                        const char * c_ld = "%ld";
58
 
                        const char * c_lo = "%lo";
59
 
                        const char * c_lX = "%lX";
60
 
                        const char * c_lx = "%lx";
61
 
                        const char * c_hashlo = "%#lo";
62
 
                        const char * c_hashlX = "%#lX";
63
 
                        const char * c_hashlx = "%#lx";
64
 
 
65
 
                        const char * formatString=0;
66
 
 
67
 
                        if( stream.flags() & ios_base::dec){
68
 
                                formatString = c_ld;
69
 
                        }else if( stream.flags() & ios_base::oct){
70
 
                                if( stream.flags() & ios_base::showbase){
71
 
                                        formatString = c_hashlo;
72
 
                                }else{
73
 
                                        formatString = c_lo;
74
 
                                }
75
 
                        }else if (stream.flags() & ios_base::hex){
76
 
                                if(stream.flags() & ios_base::showbase){
77
 
                                        if(stream.flags() & ios_base::uppercase){
78
 
                                                formatString = c_hashlX;
79
 
                                        }else{
80
 
                                                formatString = c_hashlx;
81
 
                                        }
82
 
                                }else{
83
 
                                        if(stream.flags() & ios_base::uppercase){
84
 
                                                formatString = c_lX;
85
 
                                        }else{
86
 
                                                formatString = c_lx;
87
 
                                        }
88
 
                                }
89
 
                        }
90
 
 
91
 
                        stream.printout(buffer, snprintf(buffer, 20, formatString, n) );
92
 
 
93
 
                        if(stream.flags() & ios_base::unitbuf){
94
 
                                stream.flush();
95
 
                        }
96
 
 
97
 
                }
98
 
        };
99
 
 
100
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, unsigned long int>{
101
 
        public:
102
 
                static void printout(basic_ostream<char, traits >& stream, const unsigned long int n)
103
 
                {
104
 
                        char buffer[20];
105
 
                        const char * c_lo = "%lo";
106
 
                        const char * c_lu = "%lu";
107
 
                        const char * c_lX = "%lX";
108
 
                        const char * c_lx = "%lx";
109
 
                        const char * c_hashlo = "%#lo";
110
 
                        const char * c_hashlX = "%#lX";
111
 
                        const char * c_hashlx = "%#lx";
112
 
                        const char * formatString=0;
113
 
 
114
 
                        if( stream.flags() & ios_base::dec){
115
 
                                formatString = c_lu;
116
 
                        }else if( stream.flags() & ios_base::oct){
117
 
                                if( stream.flags() & ios_base::showbase){
118
 
                                        formatString = c_hashlo;
119
 
                                }else{
120
 
                                        formatString = c_lo;
121
 
                                }
122
 
                        }else if (stream.flags() & ios_base::hex){
123
 
                                if(stream.flags() & ios_base::showbase){
124
 
                                        if(stream.flags() & ios_base::uppercase){
125
 
                                                formatString = c_hashlX;
126
 
                                        }else{
127
 
                                                formatString = c_hashlx;
128
 
                                        }
129
 
                                }else{
130
 
                                        if(stream.flags() & ios_base::uppercase){
131
 
                                                formatString = c_lX;
132
 
                                        }else{
133
 
                                                formatString = c_lx;
134
 
                                        }
135
 
                                }
136
 
                        }
137
 
 
138
 
                        stream.printout(buffer, snprintf(buffer, 20, formatString, n));
139
 
                        if(stream.flags() & ios_base::unitbuf){
140
 
                                stream.flush();
141
 
                        }
142
 
                }
143
 
        };
144
 
 
145
 
#ifndef __STRICT_ANSI__
146
 
 
147
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, signed long long int>{
148
 
        public:
149
 
                static void printout(basic_ostream<char, traits >& stream, const signed long long int n)
150
 
                {
151
 
                        char buffer[28];
152
 
                        const char * lld = "%lld";
153
 
                        const char * llo = "%llo";
154
 
                        const char * llX = "%llX";
155
 
                        const char * llx = "%llx";
156
 
                        const char * hashllo = "%#llo";
157
 
                        const char * hashllX = "%#llX";
158
 
                        const char * hashllx = "%#llx";
159
 
                        const char * formatString=0;
160
 
 
161
 
                        if( stream.flags() & ios_base::dec){
162
 
                                formatString = lld;
163
 
                        }else if( stream.flags() & ios_base::oct){
164
 
                                if( stream.flags() & ios_base::showbase){
165
 
                                        formatString = hashllo;
166
 
                                }else{
167
 
                                        formatString = llo;
168
 
                                }
169
 
                        }else if (stream.flags() & ios_base::hex){
170
 
                                if(stream.flags() & ios_base::showbase){
171
 
                                        if(stream.flags() & ios_base::uppercase){
172
 
                                                formatString = hashllX;
173
 
                                        }else{
174
 
                                                formatString = hashllx;
175
 
                                        }
176
 
                                }else{
177
 
                                        if(stream.flags() & ios_base::uppercase){
178
 
                                                formatString = llX;
179
 
                                        }else{
180
 
                                                formatString = llx;
181
 
                                        }
182
 
                                }
183
 
                        }
184
 
 
185
 
                        stream.printout(buffer, snprintf(buffer, 27, formatString, n) );
186
 
 
187
 
                        if(stream.flags() & ios_base::unitbuf){
188
 
                                stream.flush();
189
 
                        }
190
 
                }
191
 
        };
192
 
 
193
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, unsigned long long int>{
194
 
        public:
195
 
                static void printout(basic_ostream<char, traits >& stream, const unsigned long long int n)
196
 
                {
197
 
                        char buffer[28];
198
 
                        const char * llo = "%llo";
199
 
                        const char * llu = "%llu";
200
 
                        const char * llX = "%llX";
201
 
                        const char * llx = "%llx";
202
 
                        const char * hashllo = "%#llo";
203
 
                        const char * hashllX = "%#llX";
204
 
                        const char * hashllx = "%#llx";
205
 
                        const char * formatString=0;
206
 
 
207
 
                        if( stream.flags() & ios_base::dec){
208
 
                                formatString = llu;
209
 
                        }else if( stream.flags() & ios_base::oct){
210
 
                                if( stream.flags() & ios_base::showbase){
211
 
                                        formatString = hashllo;
212
 
                                }else{
213
 
                                        formatString = llo;
214
 
                                }
215
 
                        }else if (stream.flags() & ios_base::hex){
216
 
                                if(stream.flags() & ios_base::showbase){
217
 
                                        if(stream.flags() & ios_base::uppercase){
218
 
                                                formatString = hashllX;
219
 
                                        }else{
220
 
                                                formatString = hashllx;
221
 
                                        }
222
 
                                }else{
223
 
                                        if(stream.flags() & ios_base::uppercase){
224
 
                                                formatString = llX;
225
 
                                        }else{
226
 
                                                formatString = llx;
227
 
                                        }
228
 
                                }
229
 
                        }
230
 
 
231
 
                        stream.printout(buffer, snprintf(buffer, 27, formatString, n) );
232
 
 
233
 
                        if(stream.flags() & ios_base::unitbuf){
234
 
                                stream.flush();
235
 
                        }
236
 
                }
237
 
        };
238
 
 
239
 
 
240
 
#endif  //__STRICT_ANSI__
241
 
 
242
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, float>{
243
 
        public:
244
 
                static void printout(basic_ostream<char, traits >& stream, const float f)
245
 
                {
246
 
                        char buffer[32];
247
 
                        int length;
248
 
                        
249
 
                        //length = snprintf(buffer, 32, "%*.*f",static_cast<int>(stream.width()),static_cast<int>(stream.precision()), f);
250
 
                        length = strlen(dtostrf(f, static_cast<int>(stream.width()), static_cast<int>(stream.precision()), buffer));
251
 
                                        
252
 
                        stream.printout(buffer, length);
253
 
                        if(stream.flags() & ios_base::unitbuf){
254
 
                                stream.flush();
255
 
                        }
256
 
                }
257
 
        };
258
 
 
259
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, double>{
260
 
        public:
261
 
                static void printout(basic_ostream<char, traits >& stream, const double f)
262
 
                {
263
 
                        char buffer[32];
264
 
                        int length;
265
 
                        if(stream.flags() & ios_base::scientific){
266
 
                                if(stream.flags() & ios_base::uppercase){
267
 
#if defined( __AVR__ )
268
 
                                        length = strlen(dtostre(f, buffer, static_cast<int>(stream.precision()),  0x04 ));
269
 
#else           
270
 
                                        length = snprintf(buffer, 32, "%*.*E", static_cast<int>(stream.width()),static_cast<int>(stream.precision()), f);
271
 
#endif
272
 
                                }else{
273
 
#if defined( __AVR__ )
274
 
                                        length = strlen(dtostre(f, buffer, static_cast<int>(stream.precision()), 0));
275
 
#else                           
276
 
                                        length = snprintf(buffer, 32, "%*.*e", static_cast<int>(stream.width()),static_cast<int>(stream.precision()), f);
277
 
#endif                                  
278
 
                                }
279
 
                        } else if(stream.flags() & ios_base::fixed){
280
 
#if defined( __AVR__ )
281
 
                                length = strlen(dtostrf(f, static_cast<int>(stream.width()), static_cast<int>(stream.precision()), buffer));
282
 
#else                   
283
 
                                length = snprintf(buffer, 32, "%*.*f",static_cast<int>(stream.width()),static_cast<int>(stream.precision()), f);
284
 
#endif                          
285
 
                        } else {
286
 
#if defined( __AVR__ )
287
 
                                length = strlen(dtostrf(f, static_cast<int>(stream.width()), static_cast<int>(stream.precision()), buffer));
288
 
#else                   
289
 
                                length = snprintf(buffer, 32, "%*.*g",static_cast<int>(stream.width()),static_cast<int>(stream.precision()), f);
290
 
#endif                          
291
 
                        }
292
 
                        stream.printout(buffer, length);
293
 
                        if(stream.flags() & ios_base::unitbuf){
294
 
                                stream.flush();
295
 
                        }
296
 
                }
297
 
        };
298
 
 
299
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, long double>{
300
 
        public:
301
 
                static void printout(basic_ostream<char, traits >& stream, const long double f)
302
 
                {
303
 
                        char buffer[32];
304
 
                        int length;
305
 
                        if(stream.flags() & ios_base::scientific){
306
 
                                if(stream.flags() & ios_base::uppercase){
307
 
                                        length = snprintf(buffer, 32, "%*.*LE", static_cast<int>(stream.width()), static_cast<int>(stream.precision()), f);
308
 
                                }else{
309
 
                                        length = snprintf(buffer, 32, "%*.*Le", static_cast<int>(stream.width()), static_cast<int>(stream.precision()), f);
310
 
                                }
311
 
                        } else if(stream.flags() & ios_base::fixed){
312
 
                                length = snprintf(buffer, 32, "%*.*Lf", static_cast<int>(stream.width()), static_cast<int>(stream.precision()), f);
313
 
                        } else {
314
 
                                length = snprintf(buffer, 32, "%*.*Lg", static_cast<int>(stream.width()), static_cast<int>(stream.precision()), f);
315
 
                        }
316
 
                        stream.printout(buffer, length);
317
 
                        if(stream.flags() & ios_base::unitbuf){
318
 
                                stream.flush();
319
 
                        }
320
 
 
321
 
                }
322
 
        };
323
 
 
324
 
#ifdef __UCLIBCXX_HAS_WCHAR__
325
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, wchar_t, signed long int>{
326
 
        public:
327
 
                static void printout(basic_ostream<wchar_t, traits >& stream, const signed long int n)
328
 
                {
329
 
                        wchar_t buffer[20];
330
 
                        if( stream.flags() & ios_base::dec){
331
 
                                stream.printout(buffer, swprintf(buffer, 20, L"%ld", n));
332
 
                        }else if( stream.flags() & ios_base::oct){
333
 
                                if( stream.flags() & ios_base::showbase){
334
 
                                        stream.printout(buffer, swprintf(buffer, 20, L"%#lo", n));
335
 
                                }else{
336
 
                                        stream.printout(buffer, swprintf(buffer, 20, L"%lo", n) );
337
 
                                }
338
 
                        }else if (stream.flags() & ios_base::hex){
339
 
                                if(stream.flags() & ios_base::showbase){
340
 
                                        if(stream.flags() & ios_base::uppercase){
341
 
                                                stream.printout(buffer, swprintf(buffer, 20, L"%#lX", n) );
342
 
                                        }else{
343
 
                                                stream.printout(buffer, swprintf(buffer, 20, L"%#lx", n) );
344
 
                                        }
345
 
                                }else{
346
 
                                        if(stream.flags() & ios_base::uppercase){
347
 
                                                stream.printout(buffer, swprintf(buffer, 20, L"%lX", n) );
348
 
                                        }else{
349
 
                                                stream.printout(buffer, swprintf(buffer, 20, L"%lx", n) );
350
 
                                        }
351
 
                                }
352
 
                        }
353
 
                        if(stream.flags() & ios_base::unitbuf){
354
 
                                stream.flush();
355
 
                        }
356
 
                }
357
 
        };
358
 
 
359
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, wchar_t, unsigned long int>{
360
 
        public:
361
 
                static void printout(basic_ostream<wchar_t, traits >& stream, const unsigned long int n)
362
 
                {
363
 
                        wchar_t buffer[20];
364
 
                        if( stream.flags() & ios_base::dec){
365
 
                                stream.printout(buffer, swprintf(buffer, 20, L"%lu", n));
366
 
                        }else if( stream.flags() & ios_base::oct){
367
 
                                if( stream.flags() & ios_base::showbase){
368
 
                                        stream.printout(buffer, swprintf(buffer, 20, L"%#lo", n));
369
 
                                }else{
370
 
                                        stream.printout(buffer, swprintf(buffer, 20, L"%lo", n) );
371
 
                                }
372
 
                        }else if (stream.flags() & ios_base::hex){
373
 
                                if(stream.flags() & ios_base::showbase){
374
 
                                        if(stream.flags() & ios_base::uppercase){
375
 
                                                stream.printout(buffer, swprintf(buffer, 20, L"%#lX", n) );
376
 
                                        }else{
377
 
                                                stream.printout(buffer, swprintf(buffer, 20, L"%#lx", n) );
378
 
                                        }
379
 
                                }else{
380
 
                                        if(stream.flags() & ios_base::uppercase){
381
 
                                                stream.printout(buffer, swprintf(buffer, 20, L"%lX", n) );
382
 
                                        }else{
383
 
                                                stream.printout(buffer, swprintf(buffer, 20, L"%lx", n) );
384
 
                                        }
385
 
                                }
386
 
                        }
387
 
                        if(stream.flags() & ios_base::unitbuf){
388
 
                                stream.flush();
389
 
                        }
390
 
                }
391
 
        };
392
 
 
393
 
#ifndef __STRICT_ANSI__
394
 
 
395
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, wchar_t, signed long long int>{
396
 
        public:
397
 
                static void printout(basic_ostream<wchar_t, traits >& stream, const signed long long int n)
398
 
                {
399
 
                        wchar_t buffer[28];
400
 
                        if( stream.flags() & ios_base::dec){
401
 
                                stream.printout(buffer, swprintf(buffer, 27, L"%lld", n));
402
 
                        }else if( stream.flags() & ios_base::oct){
403
 
                                if( stream.flags() & ios_base::showbase){
404
 
                                        stream.printout(buffer, swprintf(buffer, 27, L"%#llo", n));
405
 
                                }else{
406
 
                                        stream.printout(buffer, swprintf(buffer, 27, L"%llo", n) );
407
 
                                }
408
 
                        }else if (stream.flags() & ios_base::hex){
409
 
                                if(stream.flags() & ios_base::showbase){
410
 
                                        if(stream.flags() & ios_base::uppercase){
411
 
                                                stream.printout(buffer, swprintf(buffer, 27, L"%#llX", n) );
412
 
                                        }else{
413
 
                                                stream.printout(buffer, swprintf(buffer, 27, L"%#llx", n) );
414
 
                                        }
415
 
                                }else{
416
 
                                        if(stream.flags() & ios_base::uppercase){
417
 
                                                stream.printout(buffer, swprintf(buffer, 27, L"%llX", n) );
418
 
                                        }else{
419
 
                                                stream.printout(buffer, swprintf(buffer, 27, L"%llx", n) );
420
 
                                        }
421
 
                                }
422
 
                        }
423
 
                        if(stream.flags() & ios_base::unitbuf){
424
 
                                stream.flush();
425
 
                        }
426
 
                }
427
 
        };
428
 
 
429
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, wchar_t, unsigned long long int>{
430
 
        public:
431
 
                static void printout(basic_ostream<wchar_t, traits >& stream, const unsigned long long int n)
432
 
                {
433
 
                        wchar_t buffer[28];
434
 
                        if( stream.flags() & ios_base::dec){
435
 
                                stream.printout(buffer, swprintf(buffer, 27, L"%llu", n));
436
 
                        }else if( stream.flags() & ios_base::oct){
437
 
                                if( stream.flags() & ios_base::showbase){
438
 
                                        stream.printout(buffer, swprintf(buffer, 27, L"%#llo", n));
439
 
                                }else{
440
 
                                        stream.printout(buffer, swprintf(buffer, 27, L"%llo", n) );
441
 
                                }
442
 
                        }else if (stream.flags() & ios_base::hex){
443
 
                                if(stream.flags() & ios_base::showbase){
444
 
                                        if(stream.flags() & ios_base::uppercase){
445
 
                                                stream.printout(buffer, swprintf(buffer, 27, L"%#llX", n) );
446
 
                                        }else{
447
 
                                                stream.printout(buffer, swprintf(buffer, 27, L"%#llx", n) );
448
 
                                        }
449
 
                                }else{
450
 
                                        if(stream.flags() & ios_base::uppercase){
451
 
                                                stream.printout(buffer, swprintf(buffer, 27, L"%llX", n) );
452
 
                                        }else{
453
 
                                                stream.printout(buffer, swprintf(buffer, 27, L"%llx", n) );
454
 
                                        }
455
 
                                }
456
 
                        }
457
 
                        if(stream.flags() & ios_base::unitbuf){
458
 
                                stream.flush();
459
 
                        }
460
 
                }
461
 
        };
462
 
 
463
 
 
464
 
#endif  //__STRICT_ANSI__
465
 
 
466
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, wchar_t, double>{
467
 
        public:
468
 
                static void printout(basic_ostream<wchar_t, traits >& stream, const double f)
469
 
                {
470
 
                        wchar_t buffer[32];
471
 
                        wchar_t format_string[32];
472
 
                        if(stream.flags() & ios_base::scientific){
473
 
                                if(stream.flags() & ios_base::uppercase){
474
 
                                        swprintf(format_string, 32, L"%%%u.%uE", static_cast<int>(stream.width()), static_cast<unsigned int>(stream.precision()));
475
 
                                }else{
476
 
                                        swprintf(format_string, 32, L"%%%u.%ue", static_cast<int>(stream.width()), static_cast<unsigned int>(stream.precision()));
477
 
                                }
478
 
                        } else if(stream.flags() & ios_base::fixed){
479
 
                                swprintf(format_string, 32, L"%%%u.%uf", static_cast<int>(stream.width()), static_cast<unsigned int>(stream.precision()));
480
 
                        } else {
481
 
                                swprintf(format_string, 32, L"%%%u.%ug", static_cast<int>(stream.width()), static_cast<unsigned int>(stream.precision()));
482
 
                        }
483
 
                        stream.printout(buffer, swprintf(buffer, 32, format_string, f) );
484
 
                        if(stream.flags() & ios_base::unitbuf){
485
 
                                stream.flush();
486
 
                        }
487
 
                }
488
 
        };
489
 
 
490
 
        template <class traits> class _UCXXEXPORT __ostream_printout<traits, wchar_t, long double>{
491
 
        public:
492
 
                static void printout(basic_ostream<wchar_t, traits >& stream, const long double f)
493
 
                {
494
 
                        wchar_t buffer[32];
495
 
                        wchar_t format_string[32];
496
 
                        if(stream.flags() & ios_base::scientific){
497
 
                                if(stream.flags() & ios_base::uppercase){
498
 
                                        swprintf(format_string, 32, L"%%%u.%uLE", static_cast<unsigned int>(stream.width()), static_cast<unsigned int>(stream.precision()));
499
 
                                }else{
500
 
                                        swprintf(format_string, 32, L"%%%u.%uLe", static_cast<unsigned int>(stream.width()), static_cast<unsigned int>(stream.precision()));
501
 
                                }
502
 
                        } else if(stream.flags() & ios_base::fixed){
503
 
                                swprintf(format_string, 32, L"%%%u.%uLf", static_cast<unsigned int>(stream.width()), static_cast<unsigned int>(stream.precision()));
504
 
                        } else {
505
 
                                swprintf(format_string, 32, L"%%%u.%uLg", static_cast<unsigned int>(stream.width()), static_cast<unsigned int>(stream.precision()));
506
 
                        }
507
 
                        stream.printout(buffer, swprintf(buffer, 32, format_string, f) );
508
 
                        if(stream.flags() & ios_base::unitbuf){
509
 
                                stream.flush();
510
 
                        }
511
 
                }
512
 
        };
513
 
 
514
 
#endif //__UCLIBCXX_HAS_WCHAR__
515
 
 
516
 
}
517
 
 
518
 
#pragma GCC visibility pop
519
 
 
520
 
#endif
521
 
 
522
 
 
523