UDK 3.2.7 C/C++ API Reference
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Functions | |
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) |
A wrapper around rtl_math_doubleToString. | |
rtl::OString | doubleToString (double fValue, rtl_math_StringFormat eFormat, sal_Int32 nDecPlaces, sal_Char cDecSeparator, bool bEraseTrailingDecZeros=false) |
A wrapper around rtl_math_doubleToString, with no grouping. | |
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. | |
rtl::OUString | doubleToUString (double fValue, rtl_math_StringFormat eFormat, sal_Int32 nDecPlaces, sal_Unicode cDecSeparator, bool bEraseTrailingDecZeros=false) |
A wrapper around rtl_math_doubleToUString, with no grouping. | |
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. | |
void | doubleToUStringBuffer (rtl::OUStringBuffer &rBuffer, double fValue, rtl_math_StringFormat eFormat, sal_Int32 nDecPlaces, sal_Unicode cDecSeparator, bool bEraseTrailingDecZeros=false) |
A wrapper around rtl_math_doubleToUString that appends to an rtl::OUStringBuffer, with no grouping. | |
double | stringToDouble (rtl::OString const &rString, sal_Char cDecSeparator, sal_Char cGroupSeparator, rtl_math_ConversionStatus *pStatus=0, sal_Int32 *pParsedEnd=0) |
A wrapper around rtl_math_stringToDouble. | |
double | stringToDouble (rtl::OUString const &rString, sal_Unicode cDecSeparator, sal_Unicode cGroupSeparator, rtl_math_ConversionStatus *pStatus=0, sal_Int32 *pParsedEnd=0) |
A wrapper around rtl_math_uStringToDouble. | |
double | round (double fValue, int nDecPlaces=0, rtl_math_RoundingMode eMode=rtl_math_RoundingMode_Corrected) |
A wrapper around rtl_math_round. | |
double | pow10Exp (double fValue, int nExp) |
A wrapper around rtl_math_pow10Exp. | |
double | approxValue (double fValue) |
A wrapper around rtl_math_approxValue. | |
double | expm1 (double fValue) |
A wrapper around rtl_math_expm1. | |
double | log1p (double fValue) |
A wrapper around rtl_math_log1p. | |
double | atanh (double fValue) |
A wrapper around rtl_math_atanh. | |
double | erf (double fValue) |
A wrapper around rtl_math_erf. | |
double | erfc (double fValue) |
A wrapper around rtl_math_erfc. | |
double | asinh (double fValue) |
A wrapper around rtl_math_asinh. | |
double | acosh (double fValue) |
A wrapper around rtl_math_acosh. | |
bool | approxEqual (double a, double b) |
Test equality of two values with an accuracy of the magnitude of the given values scaled by 2^-48 (4 bits roundoff stripped). | |
bool | approxEqual (double a, double b, sal_Int16 nPrec) |
Test equality of two values with an accuracy defined by nPrec. | |
double | approxAdd (double a, double b) |
Add two values. | |
double | approxSub (double a, double b) |
Substract two values (a-b). | |
double | approxFloor (double a) |
floor() method taking approxValue() into account. | |
double | approxCeil (double a) |
ceil() method taking approxValue() into account. | |
bool | isFinite (double d) |
Tests whether a value is neither INF nor NAN. | |
bool | isInf (double d) |
If a value represents +INF or -INF. | |
bool | isNan (double d) |
Test on any QNAN or SNAN. | |
bool | isSignBitSet (double d) |
If the sign bit is set. | |
void | setInf (double *pd, bool bNegative) |
Set to +INF if bNegative==false or -INF if bNegative==true. | |
void | setNan (double *pd) |
Set a QNAN. | |
bool | isValidArcArg (double d) |
If a value is a valid argument for sin(), cos(), tan(). | |
double | sin (double d) |
Safe sin(), returns NAN if not valid. | |
double | cos (double d) |
Safe cos(), returns NAN if not valid. | |
double | tan (double d) |
Safe tan(), returns NAN if not valid. |
double rtl::math::acosh | ( | double | fValue | ) | [inline] |
A wrapper around rtl_math_acosh.
double rtl::math::approxAdd | ( | double | a, |
double | b | ||
) | [inline] |
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().
double rtl::math::approxCeil | ( | double | a | ) | [inline] |
ceil() method taking approxValue() into account.
Use for expected integer values being calculated by double functions.
bool rtl::math::approxEqual | ( | double | a, |
double | b | ||
) | [inline] |
Test equality of two values with an accuracy of the magnitude of the given values scaled by 2^-48 (4 bits roundoff stripped).
bool rtl::math::approxEqual | ( | double | a, |
double | b, | ||
sal_Int16 | nPrec | ||
) | [inline] |
Test equality of two values with an accuracy defined by nPrec.
double rtl::math::approxFloor | ( | double | a | ) | [inline] |
floor() method taking approxValue() into account.
Use for expected integer values being calculated by double functions.
double rtl::math::approxSub | ( | double | a, |
double | b | ||
) | [inline] |
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.
double rtl::math::approxValue | ( | double | fValue | ) | [inline] |
A wrapper around rtl_math_approxValue.
double rtl::math::asinh | ( | double | fValue | ) | [inline] |
A wrapper around rtl_math_asinh.
double rtl::math::atanh | ( | double | fValue | ) | [inline] |
A wrapper around rtl_math_atanh.
double rtl::math::cos | ( | double | d | ) | [inline] |
Safe cos(), returns NAN if not valid.
rtl::OString rtl::math::doubleToString | ( | double | fValue, |
rtl_math_StringFormat | eFormat, | ||
sal_Int32 | nDecPlaces, | ||
sal_Char | cDecSeparator, | ||
sal_Int32 const * | pGroups, | ||
sal_Char | cGroupSeparator, | ||
bool | bEraseTrailingDecZeros = false |
||
) | [inline] |
A wrapper around rtl_math_doubleToString.
rtl::OString rtl::math::doubleToString | ( | double | fValue, |
rtl_math_StringFormat | eFormat, | ||
sal_Int32 | nDecPlaces, | ||
sal_Char | cDecSeparator, | ||
bool | bEraseTrailingDecZeros = false |
||
) | [inline] |
A wrapper around rtl_math_doubleToString, with no grouping.
rtl::OUString rtl::math::doubleToUString | ( | double | fValue, |
rtl_math_StringFormat | eFormat, | ||
sal_Int32 | nDecPlaces, | ||
sal_Unicode | cDecSeparator, | ||
bool | bEraseTrailingDecZeros = false |
||
) | [inline] |
A wrapper around rtl_math_doubleToUString, with no grouping.
rtl::OUString rtl::math::doubleToUString | ( | double | fValue, |
rtl_math_StringFormat | eFormat, | ||
sal_Int32 | nDecPlaces, | ||
sal_Unicode | cDecSeparator, | ||
sal_Int32 const * | pGroups, | ||
sal_Unicode | cGroupSeparator, | ||
bool | bEraseTrailingDecZeros = false |
||
) | [inline] |
A wrapper around rtl_math_doubleToUString.
void rtl::math::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 |
||
) | [inline] |
A wrapper around rtl_math_doubleToUString that appends to an rtl::OUStringBuffer.
void rtl::math::doubleToUStringBuffer | ( | rtl::OUStringBuffer & | rBuffer, |
double | fValue, | ||
rtl_math_StringFormat | eFormat, | ||
sal_Int32 | nDecPlaces, | ||
sal_Unicode | cDecSeparator, | ||
bool | bEraseTrailingDecZeros = false |
||
) | [inline] |
A wrapper around rtl_math_doubleToUString that appends to an rtl::OUStringBuffer, with no grouping.
double rtl::math::erf | ( | double | fValue | ) | [inline] |
A wrapper around rtl_math_erf.
double rtl::math::erfc | ( | double | fValue | ) | [inline] |
A wrapper around rtl_math_erfc.
double rtl::math::expm1 | ( | double | fValue | ) | [inline] |
A wrapper around rtl_math_expm1.
bool rtl::math::isFinite | ( | double | d | ) | [inline] |
Tests whether a value is neither INF nor NAN.
bool rtl::math::isInf | ( | double | d | ) | [inline] |
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.
bool rtl::math::isNan | ( | double | d | ) | [inline] |
Test on any QNAN or SNAN.
bool rtl::math::isSignBitSet | ( | double | d | ) | [inline] |
If the sign bit is set.
bool rtl::math::isValidArcArg | ( | double | d | ) | [inline] |
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.
double rtl::math::log1p | ( | double | fValue | ) | [inline] |
A wrapper around rtl_math_log1p.
double rtl::math::pow10Exp | ( | double | fValue, |
int | nExp | ||
) | [inline] |
A wrapper around rtl_math_pow10Exp.
double rtl::math::round | ( | double | fValue, |
int | nDecPlaces = 0 , |
||
rtl_math_RoundingMode | eMode = rtl_math_RoundingMode_Corrected |
||
) | [inline] |
A wrapper around rtl_math_round.
void rtl::math::setInf | ( | double * | pd, |
bool | bNegative | ||
) | [inline] |
Set to +INF if bNegative==false or -INF if bNegative==true.
void rtl::math::setNan | ( | double * | pd | ) | [inline] |
Set a QNAN.
double rtl::math::sin | ( | double | d | ) | [inline] |
Safe sin(), returns NAN if not valid.
double rtl::math::stringToDouble | ( | rtl::OString const & | rString, |
sal_Char | cDecSeparator, | ||
sal_Char | cGroupSeparator, | ||
rtl_math_ConversionStatus * | pStatus = 0 , |
||
sal_Int32 * | pParsedEnd = 0 |
||
) | [inline] |
A wrapper around rtl_math_stringToDouble.
double rtl::math::stringToDouble | ( | rtl::OUString const & | rString, |
sal_Unicode | cDecSeparator, | ||
sal_Unicode | cGroupSeparator, | ||
rtl_math_ConversionStatus * | pStatus = 0 , |
||
sal_Int32 * | pParsedEnd = 0 |
||
) | [inline] |
A wrapper around rtl_math_uStringToDouble.
double rtl::math::tan | ( | double | d | ) | [inline] |
Safe tan(), returns NAN if not valid.