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Diffstat (limited to 'sal/inc/rtl/math.hxx')
| -rw-r--r-- | sal/inc/rtl/math.hxx | 439 |
1 files changed, 0 insertions, 439 deletions
diff --git a/sal/inc/rtl/math.hxx b/sal/inc/rtl/math.hxx deleted file mode 100644 index d0055c0c66e9..000000000000 --- a/sal/inc/rtl/math.hxx +++ /dev/null @@ -1,439 +0,0 @@ -/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ -/* - * This file is part of the LibreOffice project. - * - * This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. - * - * This file incorporates work covered by the following license notice: - * - * Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed - * with this work for additional information regarding copyright - * ownership. The ASF licenses this file to you under the Apache - * License, Version 2.0 (the "License"); you may not use this file - * except in compliance with the License. You may obtain a copy of - * the License at http://www.apache.org/licenses/LICENSE-2.0 . - */ - -#ifndef INCLUDED_RTL_MATH_HXX -#define INCLUDED_RTL_MATH_HXX - -#include "rtl/math.h" -#include "rtl/string.hxx" -#include "rtl/ustring.hxx" -#include "rtl/ustrbuf.hxx" -#include "sal/mathconf.h" -#include "sal/types.h" - -#include <math.h> - -namespace rtl { - -namespace math { - -/** A wrapper around rtl_math_doubleToString. - */ -inline rtl::OString doubleToString(double fValue, rtl_math_StringFormat eFormat, - sal_Int32 nDecPlaces, - sal_Char cDecSeparator, - sal_Int32 const * pGroups, - sal_Char cGroupSeparator, - bool bEraseTrailingDecZeros = false) -{ - rtl::OString aResult; - rtl_math_doubleToString(&aResult.pData, 0, 0, fValue, eFormat, nDecPlaces, - cDecSeparator, pGroups, cGroupSeparator, - bEraseTrailingDecZeros); - return aResult; -} - -/** A wrapper around rtl_math_doubleToString, with no grouping. - */ -inline rtl::OString doubleToString(double fValue, rtl_math_StringFormat eFormat, - sal_Int32 nDecPlaces, - sal_Char cDecSeparator, - bool bEraseTrailingDecZeros = false) -{ - rtl::OString aResult; - rtl_math_doubleToString(&aResult.pData, 0, 0, fValue, eFormat, nDecPlaces, - cDecSeparator, 0, 0, bEraseTrailingDecZeros); - return aResult; -} - -/** A wrapper around rtl_math_doubleToUString. - */ -inline 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) -{ - rtl::OUString aResult; - rtl_math_doubleToUString(&aResult.pData, 0, 0, fValue, eFormat, nDecPlaces, - cDecSeparator, pGroups, cGroupSeparator, - bEraseTrailingDecZeros); - return aResult; -} - -/** A wrapper around rtl_math_doubleToUString, with no grouping. - */ -inline rtl::OUString doubleToUString(double fValue, - rtl_math_StringFormat eFormat, - sal_Int32 nDecPlaces, - sal_Unicode cDecSeparator, - bool bEraseTrailingDecZeros = false) -{ - rtl::OUString aResult; - rtl_math_doubleToUString(&aResult.pData, 0, 0, fValue, eFormat, nDecPlaces, - cDecSeparator, 0, 0, bEraseTrailingDecZeros); - return aResult; -} - -/** A wrapper around rtl_math_doubleToUString that appends to an - rtl::OUStringBuffer. - */ -inline 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) -{ - rtl_uString ** pData; - sal_Int32 * pCapacity; - rBuffer.accessInternals( &pData, &pCapacity ); - rtl_math_doubleToUString( pData, pCapacity, rBuffer.getLength(), fValue, - eFormat, nDecPlaces, cDecSeparator, pGroups, - cGroupSeparator, bEraseTrailingDecZeros); -} - -/** A wrapper around rtl_math_doubleToUString that appends to an - rtl::OUStringBuffer, with no grouping. - */ -inline void doubleToUStringBuffer( rtl::OUStringBuffer& rBuffer, double fValue, - rtl_math_StringFormat eFormat, - sal_Int32 nDecPlaces, - sal_Unicode cDecSeparator, - bool bEraseTrailingDecZeros = false) -{ - rtl_uString ** pData; - sal_Int32 * pCapacity; - rBuffer.accessInternals( &pData, &pCapacity ); - rtl_math_doubleToUString( pData, pCapacity, rBuffer.getLength(), fValue, - eFormat, nDecPlaces, cDecSeparator, 0, 0, - bEraseTrailingDecZeros); -} - -/** A wrapper around rtl_math_stringToDouble. - */ -inline double stringToDouble(rtl::OString const & rString, - sal_Char cDecSeparator, sal_Char cGroupSeparator, - rtl_math_ConversionStatus * pStatus = 0, - sal_Int32 * pParsedEnd = 0) -{ - sal_Char const * pBegin = rString.getStr(); - sal_Char const * pEnd; - double fResult = rtl_math_stringToDouble(pBegin, - pBegin + rString.getLength(), - cDecSeparator, cGroupSeparator, - pStatus, &pEnd); - if (pParsedEnd != 0) - *pParsedEnd = (sal_Int32)(pEnd - pBegin); - return fResult; -} - -/** A wrapper around rtl_math_uStringToDouble. - */ -inline double stringToDouble(rtl::OUString const & rString, - sal_Unicode cDecSeparator, - sal_Unicode cGroupSeparator, - rtl_math_ConversionStatus * pStatus = 0, - sal_Int32 * pParsedEnd = 0) -{ - sal_Unicode const * pBegin = rString.getStr(); - sal_Unicode const * pEnd; - double fResult = rtl_math_uStringToDouble(pBegin, - pBegin + rString.getLength(), - cDecSeparator, cGroupSeparator, - pStatus, &pEnd); - if (pParsedEnd != 0) - *pParsedEnd = (sal_Int32)(pEnd - pBegin); - return fResult; -} - -/** A wrapper around rtl_math_round. - */ -inline double round( - double fValue, int nDecPlaces = 0, - rtl_math_RoundingMode eMode = rtl_math_RoundingMode_Corrected) -{ - return rtl_math_round(fValue, nDecPlaces, eMode); -} - -/** A wrapper around rtl_math_pow10Exp. - */ -inline double pow10Exp(double fValue, int nExp) -{ - return rtl_math_pow10Exp(fValue, nExp); -} - -/** A wrapper around rtl_math_approxValue. - */ -inline double approxValue(double fValue) -{ - return rtl_math_approxValue(fValue); -} - -/** A wrapper around rtl_math_expm1. - */ -inline double expm1(double fValue) -{ - return rtl_math_expm1(fValue); -} - -/** A wrapper around rtl_math_log1p. - */ -inline double log1p(double fValue) -{ - return rtl_math_log1p(fValue); -} - -/** A wrapper around rtl_math_atanh. - */ -inline double atanh(double fValue) -{ - return rtl_math_atanh(fValue); -} - -/** A wrapper around rtl_math_erf. - */ -inline double erf(double fValue) -{ - return rtl_math_erf(fValue); -} - -/** A wrapper around rtl_math_erfc. - */ -inline double erfc(double fValue) -{ - return rtl_math_erfc(fValue); -} - -/** A wrapper around rtl_math_asinh. - */ -inline double asinh(double fValue) -{ - return rtl_math_asinh(fValue); -} - -/** A wrapper around rtl_math_acosh. - */ -inline double acosh(double fValue) -{ - return rtl_math_acosh(fValue); -} - - -/** Test equality of two values with an accuracy of the magnitude of the - given values scaled by 2^-48 (4 bits roundoff stripped). - - @attention - approxEqual( value!=0.0, 0.0 ) _never_ yields true. - */ -inline bool approxEqual(double a, double b) -{ - if ( a == b ) - return true; - double x = a - b; - return (x < 0.0 ? -x : x) - < ((a < 0.0 ? -a : a) * (1.0 / (16777216.0 * 16777216.0))); -} - -/** Test equality of two values with an accuracy defined by nPrec - - @attention - approxEqual( value!=0.0, 0.0 ) _never_ yields true. - */ -inline bool approxEqual(double a, double b, sal_Int16 nPrec) -{ - if ( a == b ) - return true; - double x = a - b; - return (x < 0.0 ? -x : x) - < ((a < 0.0 ? -a : a) * (1.0 / (pow(static_cast<double>(2.0), nPrec)))); -} -/** Add two values. - - If signs differ and the absolute values are equal according to approxEqual() - the method returns 0.0 instead of calculating the sum. - - If you wanted to sum up multiple values it would be convenient not to call - approxAdd() for each value but instead remember the first value not equal to - 0.0, add all other values using normal + operator, and with the result and - the remembered value call approxAdd(). - */ -inline double approxAdd(double a, double b) -{ - if ( ((a < 0.0 && b > 0.0) || (b < 0.0 && a > 0.0)) - && approxEqual( a, -b ) ) - return 0.0; - return a + b; -} - -/** Substract two values (a-b). - - If signs are identical and the values are equal according to approxEqual() - the method returns 0.0 instead of calculating the substraction. - */ -inline double approxSub(double a, double b) -{ - if ( ((a < 0.0 && b < 0.0) || (a > 0.0 && b > 0.0)) && approxEqual( a, b ) ) - return 0.0; - return a - b; -} - -/** floor() method taking approxValue() into account. - - Use for expected integer values being calculated by double functions. - */ -inline double approxFloor(double a) -{ - return floor( approxValue( a )); -} - -/** ceil() method taking approxValue() into account. - - Use for expected integer values being calculated by double functions. - */ -inline double approxCeil(double a) -{ - return ceil( approxValue( a )); -} - -/** Tests whether a value is neither INF nor NAN. - */ -inline bool isFinite(double d) -{ - return SAL_MATH_FINITE(d) != 0; -} - -/** If a value represents +INF or -INF. - - The sign bit may be queried with isSignBitSet(). - - If isFinite(d)==false and isInf(d)==false then NAN. - */ -inline bool isInf(double d) -{ - // exponent==0x7ff fraction==0 - return (SAL_MATH_FINITE(d) == 0) && - (reinterpret_cast< sal_math_Double * >(&d)->inf_parts.fraction_hi == 0) - && (reinterpret_cast< sal_math_Double * >(&d)->inf_parts.fraction_lo - == 0); -} - -/** Test on any QNAN or SNAN. - */ -inline bool isNan(double d) -{ - // exponent==0x7ff fraction!=0 - return (SAL_MATH_FINITE(d) == 0) && ( - (reinterpret_cast< sal_math_Double * >(&d)->inf_parts.fraction_hi != 0) - || (reinterpret_cast< sal_math_Double * >(&d)->inf_parts.fraction_lo - != 0) ); -} - -/** If the sign bit is set. - */ -inline bool isSignBitSet(double d) -{ - return reinterpret_cast< sal_math_Double * >(&d)->inf_parts.sign != 0; -} - -/** Set to +INF if bNegative==false or -INF if bNegative==true. - */ -inline void setInf(double * pd, bool bNegative) -{ - union - { - double sd; - sal_math_Double md; - }; - md.w32_parts.msw = bNegative ? 0xFFF00000 : 0x7FF00000; - md.w32_parts.lsw = 0; - *pd = sd; -} - -/** Set a QNAN. - */ -inline void setNan(double * pd) -{ - union - { - double sd; - sal_math_Double md; - }; - md.w32_parts.msw = 0x7FFFFFFF; - md.w32_parts.lsw = 0xFFFFFFFF; - *pd = sd; -} - -/** If a value is a valid argument for sin(), cos(), tan(). - - IEEE 754 specifies that absolute values up to 2^64 (=1.844e19) for the - radian must be supported by trigonometric functions. Unfortunately, at - least on x86 architectures, the FPU doesn't generate an error pattern for - values >2^64 but produces erroneous results instead and sets only the - "invalid operation" (IM) flag in the status word :-( Thus the application - has to handle it itself. - */ -inline bool isValidArcArg(double d) -{ - return fabs(d) - <= (static_cast< double >(static_cast< unsigned long >(0x80000000)) - * static_cast< double >(static_cast< unsigned long >(0x80000000)) - * 2); -} - -/** Safe sin(), returns NAN if not valid. - */ -inline double sin(double d) -{ - if ( isValidArcArg( d ) ) - return ::sin( d ); - setNan( &d ); - return d; -} - -/** Safe cos(), returns NAN if not valid. - */ -inline double cos(double d) -{ - if ( isValidArcArg( d ) ) - return ::cos( d ); - setNan( &d ); - return d; -} - -/** Safe tan(), returns NAN if not valid. - */ -inline double tan(double d) -{ - if ( isValidArcArg( d ) ) - return ::tan( d ); - setNan( &d ); - return d; -} - -} - -} - -#endif // INCLUDED_RTL_MATH_HXX - -/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |