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comparison: build/stlport/src/num_put_float.cpp
build/stlport/src/num_put_float.cpp
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| -1:000000000000 | 0:b0401cbbcfdd |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 1999 | |
| 3 * Silicon Graphics Computer Systems, Inc. | |
| 4 * | |
| 5 * Copyright (c) 1999 | |
| 6 * Boris Fomitchev | |
| 7 * | |
| 8 * This material is provided "as is", with absolutely no warranty expressed | |
| 9 * or implied. Any use is at your own risk. | |
| 10 * | |
| 11 * Permission to use or copy this software for any purpose is hereby granted | |
| 12 * without fee, provided the above notices are retained on all copies. | |
| 13 * Permission to modify the code and to distribute modified code is granted, | |
| 14 * provided the above notices are retained, and a notice that the code was | |
| 15 * modified is included with the above copyright notice. | |
| 16 * | |
| 17 */ | |
| 18 | |
| 19 #include "stlport_prefix.h" | |
| 20 | |
| 21 #include <cmath> | |
| 22 #include <ios> | |
| 23 #include <locale> | |
| 24 | |
| 25 #if defined (__DECCXX) | |
| 26 # define NDIG 400 | |
| 27 #else | |
| 28 # define NDIG 82 | |
| 29 #endif | |
| 30 | |
| 31 #define todigit(x) ((x)+'0') | |
| 32 | |
| 33 #if defined (_STLP_UNIX) | |
| 34 | |
| 35 # if defined (__sun) | |
| 36 # include <floatingpoint.h> | |
| 37 # endif | |
| 38 | |
| 39 # if defined (__sun) || defined (__digital__) || defined (__sgi) || defined (_STLP_SCO_OPENSERVER) || defined (__NCR_SVR) | |
| 40 // DEC, SGI & Solaris need this | |
| 41 # include <values.h> | |
| 42 # include <nan.h> | |
| 43 # endif | |
| 44 | |
| 45 # if defined (__QNXNTO__) || ( defined(__GNUC__) && defined(__APPLE__) ) || defined(_STLP_USE_UCLIBC) /* 0.9.26 */ || \ | |
| 46 defined(__FreeBSD__) | |
| 47 # define USE_SPRINTF_INSTEAD | |
| 48 # endif | |
| 49 | |
| 50 # if defined (_AIX) // JFA 3-Aug-2000 | |
| 51 # include <math.h> | |
| 52 # include <float.h> | |
| 53 # endif | |
| 54 | |
| 55 # include <math.h> | |
| 56 #endif | |
| 57 | |
| 58 #include <cstdio> | |
| 59 #include <cstdlib> | |
| 60 | |
| 61 #if defined (_STLP_MSVC_LIB) || defined (__MINGW32__) || defined (__BORLANDC__) || defined (__DJGPP) || \ | |
| 62 defined (_STLP_SCO_OPENSERVER) || defined (__NCR_SVR) | |
| 63 # include <float.h> | |
| 64 #endif | |
| 65 | |
| 66 #if defined (__MRC__) || defined (__SC__) || defined (_CRAY) //*TY 02/24/2000 - added support for MPW | |
| 67 # include <fp.h> | |
| 68 #endif | |
| 69 | |
| 70 #if defined (__CYGWIN__) | |
| 71 # include <ieeefp.h> | |
| 72 #endif | |
| 73 | |
| 74 #if defined (__MSL__) | |
| 75 # include <cstdlib> // for atoi | |
| 76 # include <cstdio> // for snprintf | |
| 77 # include <algorithm> | |
| 78 # include <cassert> | |
| 79 #endif | |
| 80 | |
| 81 #if defined (__ISCPP__) | |
| 82 # include <cfloat> | |
| 83 #endif | |
| 84 | |
| 85 #include <algorithm> | |
| 86 | |
| 87 #if defined (__DMC__) | |
| 88 # define snprintf _snprintf | |
| 89 #endif | |
| 90 | |
| 91 _STLP_BEGIN_NAMESPACE | |
| 92 | |
| 93 _STLP_MOVE_TO_PRIV_NAMESPACE | |
| 94 | |
| 95 #if defined (__MWERKS__) || defined(__BEOS__) | |
| 96 # define USE_SPRINTF_INSTEAD | |
| 97 #endif | |
| 98 | |
| 99 template <int N> | |
| 100 struct _Dig | |
| 101 { | |
| 102 enum { dig = _Dig<N/10>::dig + 1 }; | |
| 103 }; | |
| 104 | |
| 105 _STLP_TEMPLATE_NULL | |
| 106 struct _Dig<0> | |
| 107 { | |
| 108 enum { dig = 0 }; | |
| 109 }; | |
| 110 | |
| 111 #ifdef _STLP_NO_LONG_DOUBLE | |
| 112 # define MAXEDIGITS int(_Dig<DBL_MAX_10_EXP>::dig) | |
| 113 # define MAXFSIG DBL_DIG | |
| 114 # define MAXFCVT (DBL_DIG + 1) | |
| 115 #else | |
| 116 # define MAXEDIGITS int(_Dig<LDBL_MAX_10_EXP>::dig) | |
| 117 # define MAXFSIG LDBL_DIG | |
| 118 # define MAXFCVT (LDBL_DIG + 1) | |
| 119 #endif | |
| 120 | |
| 121 // Tests for infinity and NaN differ on different OSs. We encapsulate | |
| 122 // these differences here. | |
| 123 #if !defined (USE_SPRINTF_INSTEAD) | |
| 124 # if defined (__hpux) && defined (__GNUC__) | |
| 125 # define _STLP_USE_SIGN_HELPER | |
| 126 # elif defined (__DJGPP) || (defined (_STLP_USE_GLIBC) && ! defined (__MSL__)) || \ | |
| 127 defined (__CYGWIN__) || \ | |
| 128 defined (__FreeBSD__) || defined (__NetBSD__) || defined (__OpenBSD__) || \ | |
| 129 defined (__HP_aCC) | |
| 130 static inline bool _Stl_is_nan_or_inf(double x) | |
| 131 # if defined (isfinite) | |
| 132 { return !isfinite(x); } | |
| 133 # else | |
| 134 { return !finite(x); } | |
| 135 # endif | |
| 136 static inline bool _Stl_is_neg_nan(double x) { return isnan(x) && ( copysign(1., x) < 0 ); } | |
| 137 static inline bool _Stl_is_inf(double x) { return isinf(x); } | |
| 138 // inline bool _Stl_is_neg_inf(double x) { return isinf(x) < 0; } | |
| 139 static inline bool _Stl_is_neg_inf(double x) { return isinf(x) && x < 0; } | |
| 140 # elif (defined (__unix) || defined (__unix__)) && \ | |
| 141 !defined (__APPLE__) && !defined (__DJGPP) && !defined(__osf__) && \ | |
| 142 !defined (_CRAY) && !defined (__ANDROID__) | |
| 143 static inline bool _Stl_is_nan_or_inf(double x) { return IsNANorINF(x); } | |
| 144 static inline bool _Stl_is_inf(double x) { return IsNANorINF(x) && IsINF(x); } | |
| 145 static inline bool _Stl_is_neg_inf(double x) { return (IsINF(x)) && (x < 0.0); } | |
| 146 static inline bool _Stl_is_neg_nan(double x) { return IsNegNAN(x); } | |
| 147 # elif defined (_STLP_MSVC_LIB) || defined (__MINGW32__) || defined (__BORLANDC__) | |
| 148 static inline bool _Stl_is_nan_or_inf(double x) { return !_finite(x); } | |
| 149 # if !defined (__BORLANDC__) | |
| 150 static inline bool _Stl_is_inf(double x) { | |
| 151 int fclass = _fpclass(x); | |
| 152 return fclass == _FPCLASS_NINF || fclass == _FPCLASS_PINF; | |
| 153 } | |
| 154 static inline bool _Stl_is_neg_inf(double x) { return _fpclass(x) == _FPCLASS_NINF; } | |
| 155 # else | |
| 156 static inline bool _Stl_is_inf(double x) { return _Stl_is_nan_or_inf(x) && !_isnan(x);} | |
| 157 static inline bool _Stl_is_neg_inf(double x) { return _Stl_is_inf(x) && x < 0 ; } | |
| 158 # endif | |
| 159 static inline bool _Stl_is_neg_nan(double x) { return _isnan(x) && _copysign(1., x) < 0 ; } | |
| 160 # if defined (__BORLANDC__) | |
| 161 static inline bool _Stl_is_nan_or_inf(long double x) { return !_finitel(x); } | |
| 162 static inline bool _Stl_is_inf(long double x) { return _Stl_is_nan_or_inf(x) && !_isnanl(x);} | |
| 163 static inline bool _Stl_is_neg_inf(long double x) { return _Stl_is_inf(x) && x < 0 ; } | |
| 164 static inline bool _Stl_is_neg_nan(long double x) { return _isnanl(x) && _copysignl(1.l, x) < 0 ; } | |
| 165 # elif !defined (_STLP_NO_LONG_DOUBLE) | |
| 166 // Simply there to avoid warning long double -> double implicit conversion: | |
| 167 static inline bool _Stl_is_nan_or_inf(long double x) { return _Stl_is_nan_or_inf(__STATIC_CAST(double, x)); } | |
| 168 static inline bool _Stl_is_inf(long double x) { return _Stl_is_inf(__STATIC_CAST(double, x));} | |
| 169 static inline bool _Stl_is_neg_inf(long double x) { return _Stl_is_neg_inf(__STATIC_CAST(double, x)); } | |
| 170 static inline bool _Stl_is_neg_nan(long double x) { return _Stl_is_neg_nan(__STATIC_CAST(double, x)); } | |
| 171 # endif | |
| 172 # elif defined (__MRC__) || defined (__SC__) || defined (__DMC__) | |
| 173 static bool _Stl_is_nan_or_inf(double x) { return isnan(x) || !isfinite(x); } | |
| 174 static bool _Stl_is_inf(double x) { return !isfinite(x); } | |
| 175 static bool _Stl_is_neg_inf(double x) { return !isfinite(x) && signbit(x); } | |
| 176 static bool _Stl_is_neg_nan(double x) { return isnan(x) && signbit(x); } | |
| 177 # elif /* defined(__FreeBSD__) || defined(__OpenBSD__) || */ (defined(__GNUC__) && defined(__APPLE__)) | |
| 178 static inline bool _Stl_is_nan_or_inf(double x) { return !finite(x); } | |
| 179 static inline bool _Stl_is_inf(double x) { return _Stl_is_nan_or_inf(x) && ! isnan(x); } | |
| 180 static inline bool _Stl_is_neg_inf(double x) { return _Stl_is_inf(x) && x < 0 ; } | |
| 181 static inline bool _Stl_is_neg_nan(double x) { return isnan(x) && copysign(1., x) < 0 ; } | |
| 182 # elif defined( _AIX ) // JFA 11-Aug-2000 | |
| 183 static bool _Stl_is_nan_or_inf(double x) { return isnan(x) || !finite(x); } | |
| 184 static bool _Stl_is_inf(double x) { return !finite(x); } | |
| 185 // bool _Stl_is_neg_inf(double x) { return _class(x) == FP_MINUS_INF; } | |
| 186 static bool _Stl_is_neg_inf(double x) { return _Stl_is_inf(x) && ( copysign(1., x) < 0 ); } | |
| 187 static bool _Stl_is_neg_nan(double x) { return isnan(x) && ( copysign(1., x) < 0 ); } | |
| 188 # elif defined (__ISCPP__) | |
| 189 static inline bool _Stl_is_nan_or_inf (double x) { return _fp_isINF(x) || _fp_isNAN(x); } | |
| 190 static inline bool _Stl_is_inf (double x) { return _fp_isINF(x); } | |
| 191 static inline bool _Stl_is_neg_inf (double x) { return _fp_isINF(x) && x < 0; } | |
| 192 static inline bool _Stl_is_neg_nan (double x) { return _fp_isNAN(x) && x < 0; } | |
| 193 # elif defined (_CRAY) | |
| 194 # if defined (_CRAYIEEE) | |
| 195 static inline bool _Stl_is_nan_or_inf(double x) { return isnan(x) || isinf(x); } | |
| 196 static inline bool _Stl_is_inf(double x) { return isinf(x); } | |
| 197 static inline bool _Stl_is_neg_inf(double x) { return isinf(x) && signbit(x); } | |
| 198 static inline bool _Stl_is_neg_nan(double x) { return isnan(x) && signbit(x); } | |
| 199 # else | |
| 200 static inline bool _Stl_is_nan_or_inf(double x) { return false; } | |
| 201 static inline bool _Stl_is_inf(double x) { return false; } | |
| 202 static inline bool _Stl_is_neg_inf(double x) { return false; } | |
| 203 static inline bool _Stl_is_neg_nan(double x) { return false; } | |
| 204 # endif | |
| 205 # else // nothing from above | |
| 206 # define USE_SPRINTF_INSTEAD | |
| 207 # endif | |
| 208 #endif // !USE_SPRINTF_INSTEAD | |
| 209 | |
| 210 #if !defined (USE_SPRINTF_INSTEAD) | |
| 211 // Reentrant versions of floating-point conversion functions. The argument | |
| 212 // lists look slightly different on different operating systems, so we're | |
| 213 // encapsulating the differences here. | |
| 214 | |
| 215 # if defined (__CYGWIN__) || defined(__DJGPP) | |
| 216 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf) | |
| 217 { return ecvtbuf(x, n, pt, sign, buf); } | |
| 218 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf) | |
| 219 { return fcvtbuf(x, n, pt, sign, buf); } | |
| 220 # if !defined (_STLP_NO_LONG_DOUBLE) | |
| 221 # if defined (__CYGWIN__) | |
| 222 # define _STLP_EMULATE_LONG_DOUBLE_CVT | |
| 223 # else | |
| 224 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign, char* buf) | |
| 225 { return ecvtbuf(x, n, pt, sign, buf); } | |
| 226 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign, char* buf) | |
| 227 { return fcvtbuf(x, n, pt, sign, buf); } | |
| 228 # endif | |
| 229 # endif | |
| 230 # elif defined (_STLP_USE_GLIBC) | |
| 231 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf, size_t bsize) | |
| 232 { return ecvt_r(x, n, pt, sign, buf, bsize) == 0 ? buf : 0; } | |
| 233 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf, size_t bsize) | |
| 234 { return fcvt_r(x, n, pt, sign, buf, bsize) == 0 ? buf : 0; } | |
| 235 # ifndef _STLP_NO_LONG_DOUBLE | |
| 236 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign, char* buf, size_t bsize) | |
| 237 { return qecvt_r(x, n, pt, sign, buf, bsize) == 0 ? buf : 0; } | |
| 238 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign, char* buf, size_t bsize) | |
| 239 { return qfcvt_r(x, n, pt, sign, buf, bsize) == 0 ? buf : 0; } | |
| 240 # endif | |
| 241 # define _STLP_NEED_CVT_BUFFER_SIZE | |
| 242 # elif defined (__sun) | |
| 243 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf) | |
| 244 { return econvert(x, n, pt, sign, buf); } | |
| 245 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf) | |
| 246 { return fconvert(x, n, pt, sign, buf); } | |
| 247 # ifndef _STLP_NO_LONG_DOUBLE | |
| 248 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign, char* buf) | |
| 249 { return qeconvert(&x, n, pt, sign, buf); } | |
| 250 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign, char* buf) | |
| 251 { return qfconvert(&x, n, pt, sign, buf); } | |
| 252 # endif | |
| 253 # elif defined (__DECCXX) | |
| 254 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf, size_t bsize) | |
| 255 { return (ecvt_r(x, n, pt, sign, buf, bsize) == 0 ? buf : 0); } | |
| 256 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf, size_t bsize) | |
| 257 { return (fcvt_r(x, n, pt, sign, buf, bsize) == 0 ? buf : 0); } | |
| 258 # ifndef _STLP_NO_LONG_DOUBLE | |
| 259 // fbp : no "long double" conversions ! | |
| 260 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign, char* buf, size_t bsize) | |
| 261 { return (ecvt_r((double)x, n, pt, sign, buf, bsize) == 0 ? buf : 0) ; } | |
| 262 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign, char* buf, size_t bsize) | |
| 263 { return (fcvt_r((double)x, n, pt, sign, buf, bsize) == 0 ? buf : 0); } | |
| 264 # endif | |
| 265 # define _STLP_NEED_CVT_BUFFER_SIZE | |
| 266 # elif defined (__hpux) | |
| 267 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign) | |
| 268 { return ecvt(x, n, pt, sign); } | |
| 269 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign) | |
| 270 { return fcvt(x, n, pt, sign); } | |
| 271 # if !defined (_STLP_NO_LONG_DOUBLE) | |
| 272 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign) | |
| 273 { return _ldecvt(*(long_double*)&x, n, pt, sign); } | |
| 274 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign) | |
| 275 { return _ldfcvt(*(long_double*)&x, n, pt, sign); } | |
| 276 # endif | |
| 277 # define _STLP_CVT_NEED_SYNCHRONIZATION | |
| 278 # elif defined (__unix) && !defined (__APPLE__) && !defined (_CRAY) && \ | |
| 279 !defined (__ANDROID__) | |
| 280 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf) | |
| 281 { return ecvt_r(x, n, pt, sign, buf); } | |
| 282 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf) | |
| 283 { return fcvt_r(x, n, pt, sign, buf); } | |
| 284 # if !defined (_STLP_NO_LONG_DOUBLE) | |
| 285 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign, char* buf) | |
| 286 { return qecvt_r(x, n, pt, sign, buf); } | |
| 287 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign, char* buf) | |
| 288 { return qfcvt_r(x, n, pt, sign, buf); } | |
| 289 # endif | |
| 290 # elif defined (_STLP_MSVC_LIB) || defined (__MINGW32__) || defined (__BORLANDC__) | |
| 291 # if defined (_STLP_USE_SAFE_STRING_FUNCTIONS) | |
| 292 # define _STLP_APPEND(a, b) a##b | |
| 293 # define _STLP_BUF_PARAMS , char* buf, size_t bsize | |
| 294 # define _STLP_SECURE_FUN(F, X, N, PT, SIGN) _STLP_APPEND(F, _s)(buf, bsize, X, N, PT, SIGN); return buf | |
| 295 # else | |
| 296 # define _STLP_BUF_PARAMS | |
| 297 # define _STLP_SECURE_FUN(F, X, N, PT, SIGN) return F(X, N, PT, SIGN) | |
| 298 # define _STLP_CVT_NEED_SYNCHRONIZATION | |
| 299 # endif | |
| 300 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign _STLP_BUF_PARAMS) | |
| 301 { _STLP_SECURE_FUN(_ecvt, x, n, pt, sign); } | |
| 302 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign _STLP_BUF_PARAMS) | |
| 303 { _STLP_SECURE_FUN(_fcvt, x, n, pt, sign); } | |
| 304 # if !defined (_STLP_NO_LONG_DOUBLE) | |
| 305 # if defined (_STLP_USE_SAFE_STRING_FUNCTIONS) | |
| 306 # define _STLP_PARAMS , buf, bsize | |
| 307 # else | |
| 308 # define _STLP_PARAMS | |
| 309 # endif | |
| 310 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign _STLP_BUF_PARAMS) | |
| 311 { return _Stl_ecvtR(__STATIC_CAST(double, x), n, pt, sign _STLP_PARAMS); } | |
| 312 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign _STLP_BUF_PARAMS) | |
| 313 { return _Stl_fcvtR(__STATIC_CAST(double, x), n, pt, sign _STLP_PARAMS); } | |
| 314 # undef _STLP_PARAMS | |
| 315 # endif | |
| 316 # undef _STLP_SECURE_FUN | |
| 317 # undef _STLP_BUF_PARAMS | |
| 318 # undef _STLP_APPEND | |
| 319 # if defined (__BORLANDC__) /* || defined (__GNUC__) MinGW do not support 'L' modifier so emulation do not work */ | |
| 320 # define _STLP_EMULATE_LONG_DOUBLE_CVT | |
| 321 # endif | |
| 322 # elif defined (__ISCPP__) | |
| 323 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf) | |
| 324 { return _fp_ecvt( x, n, pt, sign, buf); } | |
| 325 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf) | |
| 326 { return _fp_fcvt(x, n, pt, sign, buf); } | |
| 327 # if !defined (_STLP_NO_LONG_DOUBLE) | |
| 328 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign, char* buf) | |
| 329 { return _fp_ecvt( x, n, pt, sign, buf); } | |
| 330 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign, char* buf) | |
| 331 { return _fp_fcvt(x, n, pt, sign, buf); } | |
| 332 # endif | |
| 333 # elif defined (_AIX) || defined (__FreeBSD__) || defined (__NetBSD__) || defined (__OpenBSD__) || \ | |
| 334 defined (__MRC__) || defined (__SC__) || defined (_CRAY) || \ | |
| 335 defined (_STLP_SCO_OPENSERVER) || defined (__NCR_SVR) || \ | |
| 336 defined (__DMC__) | |
| 337 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign) | |
| 338 { return ecvt(x, n, pt, sign ); } | |
| 339 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign) | |
| 340 { return fcvt(x, n, pt, sign); } | |
| 341 # if !defined (_STLP_NO_LONG_DOUBLE) | |
| 342 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign) | |
| 343 { return ecvt(x, n, pt, sign ); } | |
| 344 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign) | |
| 345 { return fcvt(x, n, pt, sign); } | |
| 346 # endif | |
| 347 # define _STLP_CVT_NEED_SYNCHRONIZATION | |
| 348 # else | |
| 349 # error Missing _Stl_ecvtR and _Stl_fcvtR implementations. | |
| 350 # endif | |
| 351 | |
| 352 #if defined (_STLP_CVT_NEED_SYNCHRONIZATION) | |
| 353 /* STLport synchronize access to *cvt functions but those methods might | |
| 354 * be called from outside, in this case we will still have a race condition. */ | |
| 355 # if defined (_STLP_THREADS) | |
| 356 static _STLP_STATIC_MUTEX& put_float_mutex() { | |
| 357 static _STLP_STATIC_MUTEX __put_float_mutex _STLP_MUTEX_INITIALIZER; | |
| 358 return __put_float_mutex; | |
| 359 } | |
| 360 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char* buf) { | |
| 361 _STLP_auto_lock lock(put_float_mutex()); | |
| 362 strcpy(buf, _Stl_ecvtR(x, n, pt, sign)); return buf; | |
| 363 } | |
| 364 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char* buf) { | |
| 365 _STLP_auto_lock lock(put_float_mutex()); | |
| 366 strcpy(buf, _Stl_fcvtR(x, n, pt, sign)); return buf; | |
| 367 } | |
| 368 # if !defined (_STLP_NO_LONG_DOUBLE) && !defined (_STLP_EMULATE_LONG_DOUBLE_CVT) | |
| 369 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign, char* buf) { | |
| 370 _STLP_auto_lock lock(put_float_mutex()); | |
| 371 strcpy(buf, _Stl_ecvtR(x, n, pt, sign)); return buf; | |
| 372 } | |
| 373 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign, char* buf) { | |
| 374 _STLP_auto_lock lock(put_float_mutex()); | |
| 375 strcpy(buf, _Stl_fcvtR(x, n, pt, sign)); return buf; | |
| 376 } | |
| 377 # endif | |
| 378 # else | |
| 379 static inline char* _Stl_ecvtR(double x, int n, int* pt, int* sign, char*) | |
| 380 { return _Stl_ecvtR(x, n, pt, sign); } | |
| 381 static inline char* _Stl_fcvtR(double x, int n, int* pt, int* sign, char*) | |
| 382 { return _Stl_fcvtR(x, n, pt, sign); } | |
| 383 # if !defined (_STLP_NO_LONG_DOUBLE) && !defined (_STLP_EMULATE_LONG_DOUBLE_CVT) | |
| 384 static inline char* _Stl_ecvtR(long double x, int n, int* pt, int* sign, char*) | |
| 385 { return _Stl_ecvtR(x, n, pt, sign); } | |
| 386 static inline char* _Stl_fcvtR(long double x, int n, int* pt, int* sign, char*) | |
| 387 { return _Stl_fcvtR(x, n, pt, sign); } | |
| 388 # endif | |
| 389 # endif | |
| 390 #endif | |
| 391 | |
| 392 # if !defined (_STLP_USE_SAFE_STRING_FUNCTIONS) && !defined (_STLP_NEED_CVT_BUFFER_SIZE) | |
| 393 # define _STLP_CVT_BUFFER(B) B | |
| 394 # else | |
| 395 # define _STLP_CVT_BUFFER(B) _STLP_ARRAY_AND_SIZE(B) | |
| 396 # endif | |
| 397 | |
| 398 # if defined (_STLP_EMULATE_LONG_DOUBLE_CVT) | |
| 399 static void __fill_fmtbuf(char* fmtbuf, ios_base::fmtflags flags, char long_modifier); | |
| 400 | |
| 401 // Emulation of ecvt/fcvt functions using sprintf: | |
| 402 static char* _Stl_ecvtR(long double x, int n, int* pt, int* sign, char* buf) { | |
| 403 // If long double value can be safely converted to double without losing precision | |
| 404 // we use the ecvt function for double: | |
| 405 double y = __STATIC_CAST(double, x); | |
| 406 if (x == y) | |
| 407 return _Stl_ecvtR(y, n, pt, sign, buf); | |
| 408 | |
| 409 char fmtbuf[32]; | |
| 410 __fill_fmtbuf(fmtbuf, 0, 'L'); | |
| 411 sprintf(buf, fmtbuf, n, x < 0.0l ? -x : x); | |
| 412 /* We are waiting for something having the form x.xxxe+yyyy */ | |
| 413 *pt = 0; | |
| 414 *sign = 0; | |
| 415 int i = -1; | |
| 416 int offset = 0; | |
| 417 while (buf[++i] != 0 && n != 0) { | |
| 418 if (buf[i] >= '0' && buf[i] <= '9') { | |
| 419 --n; | |
| 420 if (offset != 0) | |
| 421 buf[i - offset] = buf[i]; | |
| 422 } | |
| 423 else { | |
| 424 if (offset != 0) break; | |
| 425 ++offset; | |
| 426 *pt = i; | |
| 427 } | |
| 428 } | |
| 429 if (offset != 0) | |
| 430 buf[i - offset] = 0; | |
| 431 // Extract exponent part in point position: | |
| 432 int e = 0; | |
| 433 while (buf[++i] != 0) { | |
| 434 if (buf[i] >= '0' && buf[i] <= '9') { | |
| 435 e = e * 10 + (buf[i] - '0'); | |
| 436 } | |
| 437 } | |
| 438 *pt += e; | |
| 439 return buf; | |
| 440 } | |
| 441 | |
| 442 static char* _Stl_fcvtR(long double x, int n, int* pt, int* sign, char* buf) { | |
| 443 // If long double value can be safely converted to double without losing precision | |
| 444 // we use the fcvt function for double: | |
| 445 double y = __STATIC_CAST(double, x); | |
| 446 if (x == y) | |
| 447 return _Stl_fcvtR(y, n, pt, sign, buf); | |
| 448 | |
| 449 char fmtbuf[32]; | |
| 450 __fill_fmtbuf(fmtbuf, ios_base::fixed, 'L'); | |
| 451 sprintf(buf, fmtbuf, n, x < 0.0l ? -x : x); | |
| 452 *pt = 0; | |
| 453 *sign = 0; | |
| 454 int i = -1; | |
| 455 int offset = 0; | |
| 456 while (buf[++i] != 0 && (offset == 0 || n != 0)) { | |
| 457 if (buf[i] >= '0' && buf[i] <= '9') { | |
| 458 if (offset != 0) { | |
| 459 --n; | |
| 460 buf[i - offset] = buf[i]; | |
| 461 } | |
| 462 } | |
| 463 else { | |
| 464 ++offset; | |
| 465 *pt = i; | |
| 466 } | |
| 467 } | |
| 468 if (offset != 0) | |
| 469 buf[i - offset] = 0; | |
| 470 else | |
| 471 *pt = i; | |
| 472 return buf; | |
| 473 } | |
| 474 #endif | |
| 475 | |
| 476 //---------------------------------------------------------------------- | |
| 477 // num_put | |
| 478 | |
| 479 // __format_float formats a mantissa and exponent as returned by | |
| 480 // one of the conversion functions (ecvt_r, fcvt_r, qecvt_r, qfcvt_r) | |
| 481 // according to the specified precision and format flags. This is | |
| 482 // based on doprnt but is much simpler since it is concerned only | |
| 483 // with floating point input and does not consider all formats. It | |
| 484 // also does not deal with blank padding, which is handled by | |
| 485 // __copy_float_and_fill. | |
| 486 | |
| 487 static size_t __format_float_scientific( __iostring& buf, const char *bp, | |
| 488 int decpt, int sign, bool is_zero, | |
| 489 ios_base::fmtflags flags, | |
| 490 int precision) { | |
| 491 // sign if required | |
| 492 if (sign) | |
| 493 buf += '-'; | |
| 494 else if (flags & ios_base::showpos) | |
| 495 buf += '+'; | |
| 496 | |
| 497 // first digit of mantissa | |
| 498 buf += *bp++; | |
| 499 | |
| 500 // start of grouping position, grouping won't occur in scientific notation | |
| 501 // as it is impossible to have something like 1234.0e04 but we return a correct | |
| 502 // group position for coherency with __format_float_fixed. | |
| 503 size_t __group_pos = buf.size(); | |
| 504 | |
| 505 // decimal point if required | |
| 506 if (precision != 0 || flags & ios_base::showpoint) { | |
| 507 buf += '.'; | |
| 508 } | |
| 509 | |
| 510 // rest of mantissa | |
| 511 while (*bp != 0 && precision--) | |
| 512 buf += *bp++; | |
| 513 | |
| 514 // trailing 0 if needed | |
| 515 if (precision > 0) | |
| 516 buf.append(precision, '0'); | |
| 517 | |
| 518 // exponent size = number of digits + exponent sign + exponent symbol + trailing zero | |
| 519 char expbuf[MAXEDIGITS + 3]; | |
| 520 //We start filling at the buffer end | |
| 521 char *suffix = expbuf + MAXEDIGITS + 2; | |
| 522 *suffix = 0; | |
| 523 if (!is_zero) { | |
| 524 int nn = decpt - 1; | |
| 525 if (nn < 0) | |
| 526 nn = -nn; | |
| 527 for (; nn > 9; nn /= 10) | |
| 528 *--suffix = (char) todigit(nn % 10); | |
| 529 *--suffix = (char) todigit(nn); | |
| 530 } | |
| 531 | |
| 532 // prepend leading zeros to exponent | |
| 533 // C89 Standard says that it should be at least 2 digits, C99 Standard says that | |
| 534 // we stop prepend zeros if more than 3 digits. To repect both STLport prepend zeros | |
| 535 // until it is 2 digits. | |
| 536 while (suffix > &expbuf[MAXEDIGITS]) | |
| 537 *--suffix = '0'; | |
| 538 | |
| 539 // put in the exponent sign | |
| 540 *--suffix = (char) ((decpt > 0 || is_zero ) ? '+' : '-'); | |
| 541 | |
| 542 // put in the e | |
| 543 *--suffix = flags & ios_base::uppercase ? 'E' : 'e'; | |
| 544 | |
| 545 // copy the suffix | |
| 546 buf += suffix; | |
| 547 return __group_pos; | |
| 548 } | |
| 549 | |
| 550 static size_t __format_float_fixed( __iostring &buf, const char *bp, | |
| 551 int decpt, int sign, | |
| 552 ios_base::fmtflags flags, | |
| 553 int precision) { | |
| 554 if ( sign && (decpt > -precision) && (*bp != 0) ) | |
| 555 buf += '-'; | |
| 556 else if ( flags & ios_base::showpos ) | |
| 557 buf += '+'; | |
| 558 | |
| 559 // digits before decimal point | |
| 560 int nnn = decpt; | |
| 561 do { | |
| 562 buf += (nnn <= 0 || *bp == 0) ? '0' : *bp++; | |
| 563 } while ( --nnn > 0 ); | |
| 564 | |
| 565 // start of grouping position | |
| 566 size_t __group_pos = buf.size(); | |
| 567 | |
| 568 // decimal point if needed | |
| 569 if ( flags & ios_base::showpoint || precision > 0 ) { | |
| 570 buf += '.'; | |
| 571 } | |
| 572 | |
| 573 // digits after decimal point if any | |
| 574 while ( *bp != 0 && --precision >= 0 ) { | |
| 575 buf += (++decpt <= 0) ? '0' : *bp++; | |
| 576 } | |
| 577 | |
| 578 // trailing zeros if needed | |
| 579 if (precision > 0) | |
| 580 buf.append(precision, '0'); | |
| 581 | |
| 582 return __group_pos; | |
| 583 } | |
| 584 | |
| 585 #if defined (_STLP_USE_SIGN_HELPER) | |
| 586 template<class _FloatT> | |
| 587 struct float_sign_helper { | |
| 588 float_sign_helper(_FloatT __x) | |
| 589 { _M_number._num = __x; } | |
| 590 | |
| 591 bool is_negative() const { | |
| 592 const unsigned short sign_mask(1 << (sizeof(unsigned short) * CHAR_BIT - 1)); | |
| 593 return (get_sign_word() & sign_mask) != 0; | |
| 594 } | |
| 595 private: | |
| 596 union { | |
| 597 unsigned short _Words[8]; | |
| 598 _FloatT _num; | |
| 599 } _M_number; | |
| 600 | |
| 601 unsigned short get_word_higher() const _STLP_NOTHROW | |
| 602 { return _M_number._Words[0]; } | |
| 603 unsigned short get_word_lower() const _STLP_NOTHROW | |
| 604 { return _M_number._Words[(sizeof(_FloatT) >= 12 ? 10 : sizeof(_FloatT)) / sizeof(unsigned short) - 1]; } | |
| 605 unsigned short get_sign_word() const _STLP_NOTHROW | |
| 606 # if defined (_STLP_BIG_ENDIAN) | |
| 607 { return get_word_higher(); } | |
| 608 # else /* _STLP_LITTLE_ENDIAN */ | |
| 609 { return get_word_lower(); } | |
| 610 # endif | |
| 611 }; | |
| 612 #endif | |
| 613 | |
| 614 template <class _FloatT> | |
| 615 static size_t __format_nan_or_inf(__iostring& buf, _FloatT x, ios_base::fmtflags flags) { | |
| 616 static const char* inf[2] = { "inf", "Inf" }; | |
| 617 static const char* nan[2] = { "nan", "NaN" }; | |
| 618 const char** inf_or_nan; | |
| 619 #if !defined (_STLP_USE_SIGN_HELPER) | |
| 620 if (_Stl_is_inf(x)) { // Infinity | |
| 621 inf_or_nan = inf; | |
| 622 if (_Stl_is_neg_inf(x)) | |
| 623 buf += '-'; | |
| 624 else if (flags & ios_base::showpos) | |
| 625 buf += '+'; | |
| 626 } else { // NaN | |
| 627 inf_or_nan = nan; | |
| 628 if (_Stl_is_neg_nan(x)) | |
| 629 buf += '-'; | |
| 630 else if (flags & ios_base::showpos) | |
| 631 buf += '+'; | |
| 632 } | |
| 633 #else | |
| 634 typedef numeric_limits<_FloatT> limits; | |
| 635 if (x == limits::infinity() || x == -limits::infinity()) { | |
| 636 inf_or_nan = inf; | |
| 637 } else { // NaN | |
| 638 inf_or_nan = nan; | |
| 639 } | |
| 640 float_sign_helper<_FloatT> helper(x); | |
| 641 if (helper.is_negative()) | |
| 642 buf += '-'; | |
| 643 else if (flags & ios_base::showpos) | |
| 644 buf += '+'; | |
| 645 #endif | |
| 646 size_t ret = buf.size(); | |
| 647 buf += inf_or_nan[flags & ios_base::uppercase ? 1 : 0]; | |
| 648 return ret; | |
| 649 } | |
| 650 | |
| 651 static inline size_t __format_float(__iostring &buf, const char * bp, | |
| 652 int decpt, int sign, bool is_zero, | |
| 653 ios_base::fmtflags flags, | |
| 654 int precision) { | |
| 655 size_t __group_pos = 0; | |
| 656 switch (flags & ios_base::floatfield) { | |
| 657 case ios_base::scientific: | |
| 658 __group_pos = __format_float_scientific( buf, bp, decpt, sign, is_zero, | |
| 659 flags, precision); | |
| 660 break; | |
| 661 case ios_base::fixed: | |
| 662 __group_pos = __format_float_fixed( buf, bp, decpt, sign, | |
| 663 flags, precision); | |
| 664 break; | |
| 665 default: // g format | |
| 666 // establish default precision | |
| 667 if (flags & ios_base::showpoint || precision > 0) { | |
| 668 if (precision == 0) precision = 1; | |
| 669 } else | |
| 670 precision = 6; | |
| 671 | |
| 672 // reset exponent if value is zero | |
| 673 if (is_zero) | |
| 674 decpt = 1; | |
| 675 | |
| 676 int kk = precision; | |
| 677 if (!(flags & ios_base::showpoint)) { | |
| 678 size_t n = strlen(bp); | |
| 679 if (n < (size_t)kk) | |
| 680 kk = (int)n; | |
| 681 while (kk >= 1 && bp[kk-1] == '0') | |
| 682 --kk; | |
| 683 } | |
| 684 | |
| 685 if (decpt < -3 || decpt > precision) { | |
| 686 precision = kk - 1; | |
| 687 __group_pos = __format_float_scientific( buf, bp, decpt, sign, is_zero, | |
| 688 flags, precision); | |
| 689 } else { | |
| 690 precision = kk - decpt; | |
| 691 __group_pos = __format_float_fixed( buf, bp, decpt, sign, | |
| 692 flags, precision); | |
| 693 } | |
| 694 break; | |
| 695 } /* switch */ | |
| 696 return __group_pos; | |
| 697 } | |
| 698 | |
| 699 #endif | |
| 700 | |
| 701 #if defined (USE_SPRINTF_INSTEAD) || defined (_STLP_EMULATE_LONG_DOUBLE_CVT) | |
| 702 struct GroupPos { | |
| 703 bool operator () (char __c) const { | |
| 704 return __c == '.' || | |
| 705 __c == 'e' || __c == 'E'; | |
| 706 } | |
| 707 }; | |
| 708 | |
| 709 // Creates a format string for sprintf() | |
| 710 static void __fill_fmtbuf(char* fmtbuf, ios_base::fmtflags flags, char long_modifier) { | |
| 711 fmtbuf[0] = '%'; | |
| 712 int i = 1; | |
| 713 | |
| 714 if (flags & ios_base::showpos) | |
| 715 fmtbuf[i++] = '+'; | |
| 716 | |
| 717 if (flags & ios_base::showpoint) | |
| 718 fmtbuf[i++] = '#'; | |
| 719 | |
| 720 fmtbuf[i++] = '.'; | |
| 721 fmtbuf[i++] = '*'; | |
| 722 | |
| 723 if (long_modifier) | |
| 724 fmtbuf[i++] = long_modifier; | |
| 725 | |
| 726 switch (flags & ios_base::floatfield) | |
| 727 { | |
| 728 case ios_base::scientific: | |
| 729 fmtbuf[i++] = (flags & ios_base::uppercase) ? 'E' : 'e'; | |
| 730 break; | |
| 731 case ios_base::fixed: | |
| 732 # if defined (__FreeBSD__) | |
| 733 fmtbuf[i++] = 'f'; | |
| 734 # else | |
| 735 fmtbuf[i++] = (flags & ios_base::uppercase) ? 'F' : 'f'; | |
| 736 # endif | |
| 737 break; | |
| 738 default: | |
| 739 fmtbuf[i++] = (flags & ios_base::uppercase) ? 'G' : 'g'; | |
| 740 break; | |
| 741 } | |
| 742 | |
| 743 fmtbuf[i] = 0; | |
| 744 } | |
| 745 | |
| 746 #endif /* USE_SPRINTF_INSTEAD */ | |
| 747 | |
| 748 template <class _FloatT> | |
| 749 static size_t __write_floatT(__iostring &buf, ios_base::fmtflags flags, int precision, | |
| 750 _FloatT x | |
| 751 #if defined (USE_SPRINTF_INSTEAD) | |
| 752 , char modifier) { | |
| 753 /* In theory, if we want 'arbitrary' precision, we should use 'arbitrary' | |
| 754 * buffer size below, but really we limited by exponent part in double. | |
| 755 * - ptr | |
| 756 */ | |
| 757 typedef numeric_limits<_FloatT> limits; | |
| 758 char static_buf[limits::max_exponent10 + 6]; // 6: -xxx.yyyE-zzz (sign, dot, E, exp sign, \0) | |
| 759 char fmtbuf[32]; | |
| 760 __fill_fmtbuf(fmtbuf, flags, modifier); | |
| 761 snprintf(_STLP_ARRAY_AND_SIZE(static_buf), fmtbuf, precision, x); | |
| 762 buf = static_buf; | |
| 763 return find_if(buf.begin(), buf.end(), GroupPos()) - buf.begin(); | |
| 764 #else | |
| 765 ) { | |
| 766 typedef numeric_limits<_FloatT> limits; | |
| 767 //If numeric_limits support is correct we use the exposed values to detect NaN and infinity: | |
| 768 if (limits::has_infinity && limits::has_quiet_NaN) { | |
| 769 if (!(x == x) || // NaN check | |
| 770 (x == limits::infinity() || x == -limits::infinity())) { | |
| 771 return __format_nan_or_inf(buf, x, flags); | |
| 772 } | |
| 773 } | |
| 774 // numeric_limits support is not good enough, we rely on platform dependent function | |
| 775 // _Stl_is_nan_or_inf that do not support long double. | |
| 776 else if (_Stl_is_nan_or_inf(x)) { | |
| 777 return __format_nan_or_inf(buf, x, flags); | |
| 778 } | |
| 779 # if defined (__MINGW32__) | |
| 780 //For the moment MinGW is limited to display at most numeric_limits<double>::max() | |
| 781 if (x > numeric_limits<double>::max() || | |
| 782 x < -numeric_limits<double>::max()) { | |
| 783 return __format_nan_or_inf(buf, x, flags); | |
| 784 } | |
| 785 # endif | |
| 786 | |
| 787 /* Buffer size is max number of digits which is the addition of: | |
| 788 * - max_exponent10: max number of digits in fixed mode | |
| 789 * - digits10 + 2: max number of significant digits | |
| 790 * - trailing '\0' | |
| 791 */ | |
| 792 char cvtbuf[limits::max_exponent10 + limits::digits10 + 2 + 1]; | |
| 793 char *bp; | |
| 794 int decpt, sign; | |
| 795 | |
| 796 switch (flags & ios_base::floatfield) { | |
| 797 case ios_base::fixed: | |
| 798 { | |
| 799 /* Here, number of digits represents digits _after_ decimal point. | |
| 800 * In order to limit static buffer size we have to give 2 different values depending on x value. | |
| 801 * For small values (abs(x) < 1) we need as many digits as requested by precision limited by the maximum number of digits | |
| 802 * which is min_exponent10 + digits10 + 2 | |
| 803 * For bigger values we won't have more than limits::digits10 + 2 digits after decimal point. */ | |
| 804 int digits10 = (x > -1.0 && x < 1.0 ? -limits::min_exponent10 + limits::digits10 + 2 | |
| 805 : limits::digits10 + 2); | |
| 806 bp = _Stl_fcvtR(x, (min) (precision, digits10), &decpt, &sign, _STLP_CVT_BUFFER(cvtbuf) ); | |
| 807 } | |
| 808 break; | |
| 809 case ios_base::scientific: | |
| 810 default: | |
| 811 /* Here, number of digits is total number of digits which is limited to digits10 + 2. */ | |
| 812 { | |
| 813 int digits10 = limits::digits10 + 2; | |
| 814 bp = _Stl_ecvtR(x, (min) (precision, digits10), &decpt, &sign, _STLP_CVT_BUFFER(cvtbuf) ); | |
| 815 } | |
| 816 break; | |
| 817 } | |
| 818 return __format_float(buf, bp, decpt, sign, x == 0.0, flags, precision); | |
| 819 #endif | |
| 820 } | |
| 821 | |
| 822 size_t _STLP_CALL | |
| 823 __write_float(__iostring &buf, ios_base::fmtflags flags, int precision, | |
| 824 double x) { | |
| 825 return __write_floatT(buf, flags, precision, x | |
| 826 #if defined (USE_SPRINTF_INSTEAD) | |
| 827 , 0 | |
| 828 #endif | |
| 829 ); | |
| 830 } | |
| 831 | |
| 832 #if !defined (_STLP_NO_LONG_DOUBLE) | |
| 833 size_t _STLP_CALL | |
| 834 __write_float(__iostring &buf, ios_base::fmtflags flags, int precision, | |
| 835 long double x) { | |
| 836 return __write_floatT(buf, flags, precision, x | |
| 837 #if defined (USE_SPRINTF_INSTEAD) | |
| 838 , 'L' | |
| 839 #endif | |
| 840 ); | |
| 841 } | |
| 842 #endif | |
| 843 | |
| 844 void _STLP_CALL __get_floor_digits(__iostring &out, _STLP_LONGEST_FLOAT_TYPE __x) { | |
| 845 typedef numeric_limits<_STLP_LONGEST_FLOAT_TYPE> limits; | |
| 846 #if defined (USE_SPRINTF_INSTEAD) | |
| 847 char cvtbuf[limits::max_exponent10 + 6]; | |
| 848 # if !defined (_STLP_NO_LONG_DOUBLE) | |
| 849 snprintf(_STLP_ARRAY_AND_SIZE(cvtbuf), "%Lf", __x); // check for 1234.56! | |
| 850 # else | |
| 851 snprintf(_STLP_ARRAY_AND_SIZE(cvtbuf), "%f", __x); // check for 1234.56! | |
| 852 # endif | |
| 853 char *p = strchr( cvtbuf, '.' ); | |
| 854 if ( p == 0 ) { | |
| 855 out.append( cvtbuf ); | |
| 856 } else { | |
| 857 out.append( cvtbuf, p ); | |
| 858 } | |
| 859 #else | |
| 860 char cvtbuf[limits::max_exponent10 + 1]; | |
| 861 char * bp; | |
| 862 int decpt, sign; | |
| 863 bp = _Stl_fcvtR(__x, 0, &decpt, &sign, _STLP_CVT_BUFFER(cvtbuf)); | |
| 864 | |
| 865 if (sign) { | |
| 866 out += '-'; | |
| 867 } | |
| 868 out.append(bp, bp + decpt); | |
| 869 #endif | |
| 870 } | |
| 871 | |
| 872 | |
| 873 #if !defined (_STLP_NO_WCHAR_T) | |
| 874 void _STLP_CALL __convert_float_buffer( __iostring const& str, __iowstring &out, | |
| 875 const ctype<wchar_t>& ct, wchar_t dot, bool __check_dot) { | |
| 876 string::const_iterator str_ite(str.begin()), str_end(str.end()); | |
| 877 | |
| 878 //First loop, check the dot char | |
| 879 if (__check_dot) { | |
| 880 while (str_ite != str_end) { | |
| 881 if (*str_ite != '.') { | |
| 882 out += ct.widen(*str_ite++); | |
| 883 } else { | |
| 884 out += dot; | |
| 885 break; | |
| 886 } | |
| 887 } | |
| 888 } else { | |
| 889 if (str_ite != str_end) { | |
| 890 out += ct.widen(*str_ite); | |
| 891 } | |
| 892 } | |
| 893 | |
| 894 if (str_ite != str_end) { | |
| 895 //Second loop, dot has been found, no check anymore | |
| 896 while (++str_ite != str_end) { | |
| 897 out += ct.widen(*str_ite); | |
| 898 } | |
| 899 } | |
| 900 } | |
| 901 | |
| 902 #endif | |
| 903 | |
| 904 void _STLP_CALL | |
| 905 __adjust_float_buffer(__iostring &str, char dot) { | |
| 906 if ('.' != dot) { | |
| 907 size_t __dot_pos = str.find('.'); | |
| 908 if (__dot_pos != string::npos) { | |
| 909 str[__dot_pos] = dot; | |
| 910 } | |
| 911 } | |
| 912 } | |
| 913 | |
| 914 _STLP_MOVE_TO_STD_NAMESPACE | |
| 915 _STLP_END_NAMESPACE | |
| 916 | |
| 917 // Local Variables: | |
| 918 // mode:C++ | |
| 919 // End: |
