LibreOffice: rtl/math.hxx Source File

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math.hxx
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1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20/*
21 * This file is part of LibreOffice published API.
22 */
23
24#ifndef INCLUDED_RTL_MATH_HXX
25#define INCLUDED_RTL_MATH_HXX
26
27#include "rtl/math.h"
28#include "rtl/strbuf.hxx"
29#include "rtl/string.hxx"
30#include "rtl/ustring.hxx"
31#include "rtl/ustrbuf.hxx"
32#include "sal/mathconf.h"
33#include "sal/types.h"
34
35#include <cstddef>
36#include <math.h>
37
38namespace rtl {
39
40 namespace math {
41
44 inline rtl::OString doubleToString(double fValue, rtl_math_StringFormat eFormat,
45 sal_Int32 nDecPlaces,
46 char cDecSeparator,
47 sal_Int32 const * pGroups,
48 char cGroupSeparator,
49 bool bEraseTrailingDecZeros = false)
50{
51 rtl::OString aResult;
52 rtl_math_doubleToString(&aResult.pData, NULL, 0, fValue, eFormat, nDecPlaces,
53 cDecSeparator, pGroups, cGroupSeparator,
54 bEraseTrailingDecZeros);
55 return aResult;
56}
57
60 inline rtl::OString doubleToString(double fValue, rtl_math_StringFormat eFormat,
61 sal_Int32 nDecPlaces,
62 char cDecSeparator,
63 bool bEraseTrailingDecZeros = false)
64{
65 rtl::OString aResult;
66 rtl_math_doubleToString(&aResult.pData, NULL, 0, fValue, eFormat, nDecPlaces,
67 cDecSeparator, NULL, 0, bEraseTrailingDecZeros);
68 return aResult;
69}
70
76 inline void doubleToStringBuffer(
77 rtl::OStringBuffer& rBuffer, double fValue, rtl_math_StringFormat eFormat,
78 sal_Int32 nDecPlaces, char cDecSeparator, sal_Int32 const * pGroups,
79 char cGroupSeparator, bool bEraseTrailingDecZeros = false)
80{
81 rtl_String ** pData;
82 sal_Int32 * pCapacity;
83 rBuffer.accessInternals(&pData, &pCapacity);
84 rtl_math_doubleToString(
85 pData, pCapacity, rBuffer.getLength(), fValue, eFormat, nDecPlaces,
86 cDecSeparator, pGroups, cGroupSeparator, bEraseTrailingDecZeros);
87}
88
94 inline void doubleToStringBuffer(
95 rtl::OStringBuffer& rBuffer, double fValue, rtl_math_StringFormat eFormat,
96 sal_Int32 nDecPlaces, char cDecSeparator,
97 bool bEraseTrailingDecZeros = false)
98{
99 rtl_String ** pData;
100 sal_Int32 * pCapacity;
101 rBuffer.accessInternals(&pData, &pCapacity);
102 rtl_math_doubleToString(
103 pData, pCapacity, rBuffer.getLength(), fValue, eFormat, nDecPlaces,
104 cDecSeparator, NULL, 0, bEraseTrailingDecZeros);
105}
106
109 inline rtl::OUString doubleToUString(double fValue,
110 rtl_math_StringFormat eFormat,
111 sal_Int32 nDecPlaces,
112 sal_Unicode cDecSeparator,
113 sal_Int32 const * pGroups,
114 sal_Unicode cGroupSeparator,
115 bool bEraseTrailingDecZeros = false)
116{
117 rtl::OUString aResult;
118 rtl_math_doubleToUString(&aResult.pData, NULL, 0, fValue, eFormat, nDecPlaces,
119 cDecSeparator, pGroups, cGroupSeparator,
120 bEraseTrailingDecZeros);
121 return aResult;
122}
123
126 inline rtl::OUString doubleToUString(double fValue,
127 rtl_math_StringFormat eFormat,
128 sal_Int32 nDecPlaces,
129 sal_Unicode cDecSeparator,
130 bool bEraseTrailingDecZeros = false)
131{
132 rtl::OUString aResult;
133 rtl_math_doubleToUString(&aResult.pData, NULL, 0, fValue, eFormat, nDecPlaces,
134 cDecSeparator, NULL, 0, bEraseTrailingDecZeros);
135 return aResult;
136}
137
141 inline void doubleToUStringBuffer( rtl::OUStringBuffer& rBuffer, double fValue,
142 rtl_math_StringFormat eFormat,
143 sal_Int32 nDecPlaces,
144 sal_Unicode cDecSeparator,
145 sal_Int32 const * pGroups,
146 sal_Unicode cGroupSeparator,
147 bool bEraseTrailingDecZeros = false)
148{
149 rtl_uString ** pData;
150 sal_Int32 * pCapacity;
151 rBuffer.accessInternals( &pData, &pCapacity );
152 rtl_math_doubleToUString( pData, pCapacity, rBuffer.getLength(), fValue,
153 eFormat, nDecPlaces, cDecSeparator, pGroups,
154 cGroupSeparator, bEraseTrailingDecZeros);
155}
156
160 inline void doubleToUStringBuffer( rtl::OUStringBuffer& rBuffer, double fValue,
161 rtl_math_StringFormat eFormat,
162 sal_Int32 nDecPlaces,
163 sal_Unicode cDecSeparator,
164 bool bEraseTrailingDecZeros = false)
165{
166 rtl_uString ** pData;
167 sal_Int32 * pCapacity;
168 rBuffer.accessInternals( &pData, &pCapacity );
169 rtl_math_doubleToUString( pData, pCapacity, rBuffer.getLength(), fValue,
170 eFormat, nDecPlaces, cDecSeparator, NULL, 0,
171 bEraseTrailingDecZeros);
172}
173
176#ifdef LIBO_INTERNAL_ONLY
177inline double stringToDouble(std::string_view aString,
178 char cDecSeparator, char cGroupSeparator,
179 rtl_math_ConversionStatus * pStatus = NULL,
180 sal_Int32 * pParsedEnd = NULL)
181{
182 char const * pBegin = aString.data();
183 char const * pEnd;
184 double fResult = rtl_math_stringToDouble(pBegin,
185 pBegin + aString.size(),
186 cDecSeparator, cGroupSeparator,
187 pStatus, &pEnd);
188 if (pParsedEnd != NULL)
189 *pParsedEnd = static_cast<sal_Int32>(pEnd - pBegin);
190 return fResult;
191}
192#else
193 inline double stringToDouble(rtl::OString const & rString,
194 char cDecSeparator, char cGroupSeparator,
195 rtl_math_ConversionStatus * pStatus = NULL,
196 sal_Int32 * pParsedEnd = NULL)
197{
198 char const * pBegin = rString.getStr();
199 char const * pEnd;
200 double fResult = rtl_math_stringToDouble(pBegin,
201 pBegin + rString.getLength(),
202 cDecSeparator, cGroupSeparator,
203 pStatus, &pEnd);
204 if (pParsedEnd != NULL)
205 *pParsedEnd = static_cast<sal_Int32>(pEnd - pBegin);
206 return fResult;
207}
208#endif
209
210
213#ifdef LIBO_INTERNAL_ONLY
214inline double stringToDouble(std::u16string_view aString,
215 sal_Unicode cDecSeparator,
216 sal_Unicode cGroupSeparator,
217 rtl_math_ConversionStatus * pStatus = NULL,
218 sal_Int32 * pParsedEnd = NULL)
219{
220 sal_Unicode const * pBegin = aString.data();
221 sal_Unicode const * pEnd;
222 double fResult = rtl_math_uStringToDouble(pBegin,
223 pBegin + aString.size(),
224 cDecSeparator, cGroupSeparator,
225 pStatus, &pEnd);
226 if (pParsedEnd != NULL)
227 *pParsedEnd = static_cast<sal_Int32>(pEnd - pBegin);
228 return fResult;
229}
230#else
231 inline double stringToDouble(rtl::OUString const & rString,
232 sal_Unicode cDecSeparator,
233 sal_Unicode cGroupSeparator,
234 rtl_math_ConversionStatus * pStatus = NULL,
235 sal_Int32 * pParsedEnd = NULL)
236{
237 sal_Unicode const * pBegin = rString.getStr();
238 sal_Unicode const * pEnd;
239 double fResult = rtl_math_uStringToDouble(pBegin,
240 pBegin + rString.getLength(),
241 cDecSeparator, cGroupSeparator,
242 pStatus, &pEnd);
243 if (pParsedEnd != NULL)
244 *pParsedEnd = static_cast<sal_Int32>(pEnd - pBegin);
245 return fResult;
246}
247#endif
248
251 inline double round(
252 double fValue, int nDecPlaces = 0,
253 rtl_math_RoundingMode eMode = rtl_math_RoundingMode_Corrected)
254{
255 return rtl_math_round(fValue, nDecPlaces, eMode);
256}
257
260 inline double pow10Exp(double fValue, int nExp)
261{
262 return rtl_math_pow10Exp(fValue, nExp);
263}
264
267 inline double approxValue(double fValue)
268{
269 return rtl_math_approxValue(fValue);
270}
271
274 inline double expm1(double fValue)
275{
276 return rtl_math_expm1(fValue);
277}
278
281 inline double log1p(double fValue)
282{
283 return rtl_math_log1p(fValue);
284}
285
288 inline double atanh(double fValue)
289{
290 return rtl_math_atanh(fValue);
291}
292
295 inline double erf(double fValue)
296{
297 return rtl_math_erf(fValue);
298}
299
302 inline double erfc(double fValue)
303{
304 return rtl_math_erfc(fValue);
305}
306
309 inline double asinh(double fValue)
310{
311 return rtl_math_asinh(fValue);
312}
313
316 inline double acosh(double fValue)
317{
318 return rtl_math_acosh(fValue);
319}
320
323 inline bool approxEqual(double a, double b)
324{
325 return rtl_math_approxEqual( a, b );
326}
327
333 inline bool approxEqual(double a, double b, sal_Int16 nPrec)
334{
335 if ( a == b )
336 return true;
337 double x = a - b;
338 return (x < 0.0 ? -x : x)
339 < ((a < 0.0 ? -a : a) * (1.0 / (pow(2.0, nPrec))));
340}
341
352 inline double approxAdd(double a, double b)
353{
354 if ( ((a < 0.0 && b > 0.0) || (b < 0.0 && a > 0.0))
355 && approxEqual( a, -b ) )
356 return 0.0;
357 return a + b;
358}
359
365 inline double approxSub(double a, double b)
366{
367 if ( ((a < 0.0 && b < 0.0) || (a > 0.0 && b > 0.0)) && approxEqual( a, b ) )
368 return 0.0;
369 return a - b;
370}
371
376 inline double approxFloor(double a)
377{
378 return floor( approxValue( a ));
379}
380
385 inline double approxCeil(double a)
386{
387 return ceil( approxValue( a ));
388}
389
392 inline bool isFinite(double d)
393{
394 return SAL_MATH_FINITE(d);
395}
396
403 inline bool isInf(double d)
404{
405 // exponent==0x7ff fraction==0
406 return !SAL_MATH_FINITE(d) &&
407 (reinterpret_cast< sal_math_Double * >(&d)->inf_parts.fraction_hi == 0)
408 && (reinterpret_cast< sal_math_Double * >(&d)->inf_parts.fraction_lo
409 == 0);
410}
411
414 inline bool isNan(double d)
415{
416 // exponent==0x7ff fraction!=0
417 return !SAL_MATH_FINITE(d) && (
418 (reinterpret_cast< sal_math_Double * >(&d)->inf_parts.fraction_hi != 0)
419 || (reinterpret_cast< sal_math_Double * >(&d)->inf_parts.fraction_lo
420 != 0) );
421}
422
425 inline bool isSignBitSet(double d)
426{
427 return reinterpret_cast< sal_math_Double * >(&d)->inf_parts.sign != 0;
428}
429
432 inline void setInf(double * pd, bool bNegative)
433{
434 sal_math_Double& md = *reinterpret_cast<sal_math_Double*>(pd);
435 md.w32_parts.msw = bNegative ? 0xFFF00000 : 0x7FF00000;
436 md.w32_parts.lsw = 0;
437}
438
441 inline void setNan(double * pd)
442{
443 sal_math_Double& md = *reinterpret_cast<sal_math_Double*>(pd);
444 md.w32_parts.msw = 0x7FFFFFFF;
445 md.w32_parts.lsw = 0xFFFFFFFF;
446}
447
457 inline bool isValidArcArg(double d)
458{
459 return fabs(d)
460 <= (static_cast< double >(static_cast< unsigned long >(0x80000000))
461 * static_cast< double >(static_cast< unsigned long >(0x80000000))
462 * 4);
463}
464
467 inline double sin(double d)
468{
469 if ( isValidArcArg( d ) )
470 return ::sin( d );
471 setNan( &d );
472 return d;
473}
474
477 inline double cos(double d)
478{
479 if ( isValidArcArg( d ) )
480 return ::cos( d );
481 setNan( &d );
482 return d;
483}
484
487 inline double tan(double d)
488{
489 if ( isValidArcArg( d ) )
490 return ::tan( d );
491 setNan( &d );
492 return d;
493}
494
495}
496
497}
498
499#endif // INCLUDED_RTL_MATH_HXX
500
501/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
mathconf.h
types.h
sal_Unicode
sal_uInt16 sal_Unicode
Definition types.h:123
math.h
rtl_math_erf
SAL_DLLPUBLIC double rtl_math_erf(double fValue) SAL_THROW_EXTERN_C()
Returns values of the Errorfunction erf.
rtl_math_RoundingMode
rtl_math_RoundingMode
Rounding modes for rtl_math_round.
Definition math.h:105
rtl_math_RoundingMode_Corrected
@ rtl_math_RoundingMode_Corrected
Like HalfUp, but corrects roundoff errors, preferred.
Definition math.h:108
rtl_math_ConversionStatus
rtl_math_ConversionStatus
Status for rtl_math_stringToDouble and rtl_math_uStringToDouble.
Definition math.h:88
rtl_math_round
SAL_DLLPUBLIC double rtl_math_round(double fValue, int nDecPlaces, enum rtl_math_RoundingMode eMode) SAL_THROW_EXTERN_C()
Rounds a double value.
rtl_math_doubleToUString
SAL_DLLPUBLIC void rtl_math_doubleToUString(rtl_uString **pResult, sal_Int32 *pResultCapacity, sal_Int32 nResultOffset, double fValue, enum rtl_math_StringFormat eFormat, sal_Int32 nDecPlaces, sal_Unicode cDecSeparator, sal_Int32 const *pGroups, sal_Unicode cGroupSeparator, sal_Bool bEraseTrailingDecZeros) SAL_THROW_EXTERN_C()
Conversions analogous to sprintf() using internal rounding.
rtl_math_StringFormat
rtl_math_StringFormat
Formatting modes for rtl_math_doubleToString and rtl_math_doubleToUString and rtl_math_doubleToUStrin...
Definition math.h:41
rtl_math_asinh
SAL_DLLPUBLIC double rtl_math_asinh(double fValue) SAL_THROW_EXTERN_C()
Returns values of the inverse hyperbolic sine.
rtl_math_doubleToString
SAL_DLLPUBLIC void rtl_math_doubleToString(rtl_String **pResult, sal_Int32 *pResultCapacity, sal_Int32 nResultOffset, double fValue, enum rtl_math_StringFormat eFormat, sal_Int32 nDecPlaces, char cDecSeparator, sal_Int32 const *pGroups, char cGroupSeparator, sal_Bool bEraseTrailingDecZeros) SAL_THROW_EXTERN_C()
Conversions analogous to sprintf() using internal rounding.
rtl_math_erfc
SAL_DLLPUBLIC double rtl_math_erfc(double fValue) SAL_THROW_EXTERN_C()
Returns values of the complement Errorfunction erfc.
rtl_math_atanh
SAL_DLLPUBLIC double rtl_math_atanh(double fValue) SAL_THROW_EXTERN_C()
Returns more accurate atanh(x) for x near 0 than calculating 0.5*log((1+x)/(1-x)).
rtl_math_approxValue
SAL_DLLPUBLIC double rtl_math_approxValue(double fValue) SAL_THROW_EXTERN_C()
Rounds value to 15 significant decimal digits.
rtl_math_approxEqual
SAL_DLLPUBLIC bool rtl_math_approxEqual(double a, double b) SAL_THROW_EXTERN_C()
Test equality of two values with an accuracy of the magnitude of the given values scaled by 2^-48 (4 ...
rtl_math_stringToDouble
SAL_DLLPUBLIC double rtl_math_stringToDouble(char const *pBegin, char const *pEnd, char cDecSeparator, char cGroupSeparator, enum rtl_math_ConversionStatus *pStatus, char const **pParsedEnd) SAL_THROW_EXTERN_C()
Conversion analogous to strtod(), convert a string representing a decimal number into a double value.
rtl_math_pow10Exp
SAL_DLLPUBLIC double rtl_math_pow10Exp(double fValue, int nExp) SAL_THROW_EXTERN_C()
Scales fVal to a power of 10 without calling pow() or div() for nExp values between -16 and +16,...
rtl_math_log1p
SAL_DLLPUBLIC double rtl_math_log1p(double fValue) SAL_THROW_EXTERN_C()
Returns more accurate log(1+x) for x near 0 than calculating directly.
rtl_math_acosh
SAL_DLLPUBLIC double rtl_math_acosh(double fValue) SAL_THROW_EXTERN_C()
Returns values of the inverse hyperbolic cosine.
rtl_math_expm1
SAL_DLLPUBLIC double rtl_math_expm1(double fValue) SAL_THROW_EXTERN_C()
Returns more accurate e^x-1 for x near 0 than calculating directly.
rtl_math_uStringToDouble
SAL_DLLPUBLIC double rtl_math_uStringToDouble(sal_Unicode const *pBegin, sal_Unicode const *pEnd, sal_Unicode cDecSeparator, sal_Unicode cGroupSeparator, enum rtl_math_ConversionStatus *pStatus, sal_Unicode const **pParsedEnd) SAL_THROW_EXTERN_C()
Conversion analogous to strtod(), convert a string representing a decimal number into a double value.
strbuf.hxx
string.hxx
ustrbuf.hxx
ustring.hxx
rtl
Definition bootstrap.hxx:34
rtl::math
Definition math.hxx:40
rtl::math::approxEqual
bool approxEqual(double a, double b)
A wrapper around rtl_math_approxEqual.
Definition math.hxx:323
rtl::math::approxAdd
double approxAdd(double a, double b)
Add two values.
Definition math.hxx:352
rtl::math::isNan
bool isNan(double d)
Test on any QNAN or SNAN.
Definition math.hxx:414
rtl::math::sin
double sin(double d)
Safe sin(), returns NAN if not valid.
Definition math.hxx:467
rtl::math::log1p
double log1p(double fValue)
A wrapper around rtl_math_log1p.
Definition math.hxx:281
rtl::math::erf
double erf(double fValue)
A wrapper around rtl_math_erf.
Definition math.hxx:295
rtl::math::approxSub
double approxSub(double a, double b)
Subtract two values (a-b).
Definition math.hxx:365
rtl::math::stringToDouble
double stringToDouble(rtl::OString const &rString, char cDecSeparator, char cGroupSeparator, rtl_math_ConversionStatus *pStatus=NULL, sal_Int32 *pParsedEnd=NULL)
A wrapper around rtl_math_stringToDouble.
Definition math.hxx:193
rtl::math::approxFloor
double approxFloor(double a)
floor() method taking approxValue() into account.
Definition math.hxx:376
rtl::math::asinh
double asinh(double fValue)
A wrapper around rtl_math_asinh.
Definition math.hxx:309
rtl::math::isValidArcArg
bool isValidArcArg(double d)
If a value is a valid argument for sin(), cos(), tan().
Definition math.hxx:457
rtl::math::setNan
void setNan(double *pd)
Set a QNAN.
Definition math.hxx:441
rtl::math::expm1
double expm1(double fValue)
A wrapper around rtl_math_expm1.
Definition math.hxx:274
rtl::math::doubleToString
rtl::OString doubleToString(double fValue, rtl_math_StringFormat eFormat, sal_Int32 nDecPlaces, char cDecSeparator, sal_Int32 const *pGroups, char cGroupSeparator, bool bEraseTrailingDecZeros=false)
A wrapper around rtl_math_doubleToString.
Definition math.hxx:44
rtl::math::doubleToUStringBuffer
void doubleToUStringBuffer(rtl::OUStringBuffer &rBuffer, double fValue, rtl_math_StringFormat eFormat, sal_Int32 nDecPlaces, sal_Unicode cDecSeparator, sal_Int32 const *pGroups, sal_Unicode cGroupSeparator, bool bEraseTrailingDecZeros=false)
A wrapper around rtl_math_doubleToUString that appends to an rtl::OUStringBuffer.
Definition math.hxx:141
rtl::math::doubleToUString
rtl::OUString doubleToUString(double fValue, rtl_math_StringFormat eFormat, sal_Int32 nDecPlaces, sal_Unicode cDecSeparator, sal_Int32 const *pGroups, sal_Unicode cGroupSeparator, bool bEraseTrailingDecZeros=false)
A wrapper around rtl_math_doubleToUString.
Definition math.hxx:109
rtl::math::round
double round(double fValue, int nDecPlaces=0, rtl_math_RoundingMode eMode=rtl_math_RoundingMode_Corrected)
A wrapper around rtl_math_round.
Definition math.hxx:251
rtl::math::isInf
bool isInf(double d)
If a value represents +INF or -INF.
Definition math.hxx:403
rtl::math::erfc
double erfc(double fValue)
A wrapper around rtl_math_erfc.
Definition math.hxx:302
rtl::math::approxValue
double approxValue(double fValue)
A wrapper around rtl_math_approxValue.
Definition math.hxx:267
rtl::math::doubleToStringBuffer
void doubleToStringBuffer(rtl::OStringBuffer &rBuffer, double fValue, rtl_math_StringFormat eFormat, sal_Int32 nDecPlaces, char cDecSeparator, sal_Int32 const *pGroups, char cGroupSeparator, bool bEraseTrailingDecZeros=false)
A wrapper around rtl_math_doubleToString that appends to an rtl::OStringBuffer.
Definition math.hxx:76
rtl::math::atanh
double atanh(double fValue)
A wrapper around rtl_math_atanh.
Definition math.hxx:288
rtl::math::isSignBitSet
bool isSignBitSet(double d)
If the sign bit is set.
Definition math.hxx:425
rtl::math::setInf
void setInf(double *pd, bool bNegative)
Set to +INF if bNegative==false or -INF if bNegative==true.
Definition math.hxx:432
rtl::math::tan
double tan(double d)
Safe tan(), returns NAN if not valid.
Definition math.hxx:487
rtl::math::acosh
double acosh(double fValue)
A wrapper around rtl_math_acosh.
Definition math.hxx:316
rtl::math::pow10Exp
double pow10Exp(double fValue, int nExp)
A wrapper around rtl_math_pow10Exp.
Definition math.hxx:260
rtl::math::isFinite
bool isFinite(double d)
Tests whether a value is neither INF nor NAN.
Definition math.hxx:392
rtl::math::approxCeil
double approxCeil(double a)
ceil() method taking approxValue() into account.
Definition math.hxx:385
rtl::math::cos
double cos(double d)
Safe cos(), returns NAN if not valid.
Definition math.hxx:477
rtl::OStringBuffer
A string buffer implements a mutable sequence of characters.
Definition strbuf.hxx:72
rtl::OStringBuffer::accessInternals
void accessInternals(rtl_String ***pInternalData, sal_Int32 **pInternalCapacity)
Allows access to the internal data of this OStringBuffer, for effective manipulation.
Definition strbuf.hxx:1067
rtl::OStringBuffer::getLength
sal_Int32 getLength() const
Returns the length (character count) of this string buffer.
Definition strbuf.hxx:377
rtl::OString
This String class provide base functionality for C++ like 8-Bit character array handling.
Definition string.hxx:193
rtl::OString::getStr
const char * getStr() const SAL_RETURNS_NONNULL
Returns a pointer to the characters of this string.
Definition string.hxx:697
rtl::OString::getLength
sal_Int32 getLength() const
Returns the length of this string.
Definition string.hxx:671
rtl::OUStringBuffer
A string buffer implements a mutable sequence of characters.
Definition ustrbuf.hxx:73
rtl::OUStringBuffer::getLength
sal_Int32 getLength() const
Returns the length (character count) of this string buffer.
Definition ustrbuf.hxx:398
rtl::OUStringBuffer::accessInternals
void accessInternals(rtl_uString ***pInternalData, sal_Int32 **pInternalCapacity)
Allows access to the internal data of this OUStringBuffer, for effective manipulation.
Definition ustrbuf.hxx:1344
rtl::OUString
This String class provides base functionality for C++ like Unicode character array handling.
Definition ustring.hxx:172
rtl::OUString::getStr
const sal_Unicode * getStr() const SAL_RETURNS_NONNULL
Returns a pointer to the Unicode character buffer for this string.
Definition ustring.hxx:849
rtl::OUString::getLength
sal_Int32 getLength() const
Returns the length of this string.
Definition ustring.hxx:827