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Diffstat (limited to 'deps/icu-small/source/i18n/precision.h')
| -rw-r--r-- | deps/icu-small/source/i18n/precision.h | 323 |
1 files changed, 0 insertions, 323 deletions
diff --git a/deps/icu-small/source/i18n/precision.h b/deps/icu-small/source/i18n/precision.h deleted file mode 100644 index 0598fa17d6..0000000000 --- a/deps/icu-small/source/i18n/precision.h +++ /dev/null @@ -1,323 +0,0 @@ -// © 2016 and later: Unicode, Inc. and others. -// License & terms of use: http://www.unicode.org/copyright.html -/* -******************************************************************************* -* Copyright (C) 2015, International Business Machines -* Corporation and others. All Rights Reserved. -******************************************************************************* -* precision.h -* -* created on: 2015jan06 -* created by: Travis Keep -*/ - -#ifndef __PRECISION_H__ -#define __PRECISION_H__ - -#include "unicode/uobject.h" - -#if !UCONFIG_NO_FORMATTING -#include "unicode/utypes.h" - -#include "digitinterval.h" -#include "digitlst.h" -#include "significantdigitinterval.h" - -U_NAMESPACE_BEGIN - -class VisibleDigits; -class VisibleDigitsWithExponent; - - -/** - * A precision manager for values to be formatted as fixed point. - * Handles rounding of number to prepare it for formatting. - */ -class U_I18N_API FixedPrecision : public UMemory { -public: - - /** - * The smallest format interval allowed. Default is 1 integer digit and no - * fraction digits. - */ - DigitInterval fMin; - - /** - * The largest format interval allowed. Must contain fMin. - * Default is all digits. - */ - DigitInterval fMax; - - /** - * Min and max significant digits allowed. The default is no constraints. - */ - SignificantDigitInterval fSignificant; - - /** - * The rounding increment or zero if there is no rounding increment. - * Default is zero. - */ - DigitList fRoundingIncrement; - - /** - * If set, causes round() to set status to U_FORMAT_INEXACT_ERROR if - * any rounding is done. Default is FALSE. - */ - UBool fExactOnly; - - /** - * If set, causes round() to set status to U_ILLEGAL_ARGUMENT_ERROR if - * rounded number has more than maximum integer digits. Default is FALSE. - */ - UBool fFailIfOverMax; - - /** - * Controls the rounding mode that initVisibleDigits uses. - * Default is DecimalFormat::kRoundHalfEven - */ - DecimalFormat::ERoundingMode fRoundingMode; - - FixedPrecision(); - - /** - * Returns TRUE if this object equals rhs. - */ - UBool equals(const FixedPrecision &rhs) const { - return (fMin.equals(rhs.fMin) && - fMax.equals(rhs.fMax) && - fSignificant.equals(rhs.fSignificant) && - (fRoundingIncrement == rhs.fRoundingIncrement) && - fExactOnly == rhs.fExactOnly && - fFailIfOverMax == rhs.fFailIfOverMax && - fRoundingMode == rhs.fRoundingMode); - } - - /** - * Rounds value in place to prepare it for formatting. - * @param value The value to be rounded. It is rounded in place. - * @param exponent Always pass 0 for fixed decimal formatting. scientific - * precision passes the exponent value. Essentially, it divides value by - * 10^exponent, rounds and then multiplies by 10^exponent. - * @param status error returned here. - * @return reference to value. - */ - DigitList &round(DigitList &value, int32_t exponent, UErrorCode &status) const; - - /** - * Returns the interval to use to format the rounded value. - * @param roundedValue the already rounded value to format. - * @param interval modified in place to be the interval to use to format - * the rounded value. - * @return a reference to interval. - */ - DigitInterval &getInterval( - const DigitList &roundedValue, DigitInterval &interval) const; - - /** - * Returns TRUE if this instance allows for fast formatting of integers. - */ - UBool isFastFormattable() const; - - /** - * Initializes a VisibleDigits. - * @param value value for VisibleDigits - * Caller must not assume that the value of this parameter will remain - * unchanged. - * @param digits This is the value that is initialized. - * @param status any error returned here. - * @return digits - */ - VisibleDigits &initVisibleDigits( - DigitList &value, - VisibleDigits &digits, - UErrorCode &status) const; - - /** - * Initializes a VisibleDigits. - * @param value value for VisibleDigits - * @param digits This is the value that is initialized. - * @param status any error returned here. - * @return digits - */ - VisibleDigits &initVisibleDigits( - double value, - VisibleDigits &digits, - UErrorCode &status) const; - - /** - * Initializes a VisibleDigits. - * @param value value for VisibleDigits - * @param digits This is the value that is initialized. - * @param status any error returned here. - * @return digits - */ - VisibleDigits &initVisibleDigits( - int64_t value, - VisibleDigits &digits, - UErrorCode &status) const; - - /** - * Initializes a VisibleDigitsWithExponent. - * @param value value for VisibleDigits - * Caller must not assume that the value of this parameter will remain - * unchanged. - * @param digits This is the value that is initialized. - * @param status any error returned here. - * @return digits - */ - VisibleDigitsWithExponent &initVisibleDigitsWithExponent( - DigitList &value, - VisibleDigitsWithExponent &digits, - UErrorCode &status) const; - - /** - * Initializes a VisibleDigitsWithExponent. - * @param value value for VisibleDigits - * @param digits This is the value that is initialized. - * @param status any error returned here. - * @return digits - */ - VisibleDigitsWithExponent &initVisibleDigitsWithExponent( - double value, - VisibleDigitsWithExponent &digits, - UErrorCode &status) const; - - /** - * Initializes a VisibleDigitsWithExponent. - * @param value value for VisibleDigits - * @param digits This is the value that is initialized. - * @param status any error returned here. - * @return digits - */ - VisibleDigitsWithExponent &initVisibleDigitsWithExponent( - int64_t value, - VisibleDigitsWithExponent &digits, - UErrorCode &status) const; - -private: - /** - * Attempts to initialize 'digits' using simple mod 10 arithmetic. - * Returns FALSE if this is not possible such as when rounding - * would change the value. Otherwise returns TRUE. - * - * If the method returns FALSE, caller should create a DigitList - * and use it to initialize 'digits'. If this method returns TRUE, - * caller should accept the value stored in 'digits'. If this - * method returns TRUE along with a non zero error, caller must accept - * the error and not try again with a DigitList. - * - * Before calling this method, caller must verify that this object - * has no rounding increment set. - * - * The value that 'digits' is initialized to is mantissa * 10^exponent. - * For example mantissa = 54700 and exponent = -3 means 54.7. The - * properties of this object (such as min and max fraction digits), - * not the number of trailing zeros in the mantissa, determine whether or - * not the result contains any trailing 0's after the decimal point. - * - * @param mantissa the digits. May be positive or negative. May contain - * trailing zeros. - * @param exponent must always be zero or negative. An exponent > 0 - * yields undefined results! - * @param digits result stored here. - * @param status any error returned here. - */ - UBool - initVisibleDigits( - int64_t mantissa, - int32_t exponent, - VisibleDigits &digits, - UErrorCode &status) const; - UBool isRoundingRequired( - int32_t upperExponent, int32_t lowerExponent) const; - DigitInterval &getIntervalForZero(DigitInterval &interval) const; - DigitInterval &getInterval( - int32_t upperExponent, DigitInterval &interval) const; - static UBool handleNonNumeric(DigitList &value, VisibleDigits &digits); - - friend class ScientificPrecision; -}; - -/** - * A precision manager for values to be expressed as scientific notation. - */ -class U_I18N_API ScientificPrecision : public UMemory { -public: - FixedPrecision fMantissa; - int32_t fMinExponentDigits; - - ScientificPrecision(); - - /** - * rounds value in place to prepare it for formatting. - * @param value The value to be rounded. It is rounded in place. - * @param status error returned here. - * @return reference to value. - */ - DigitList &round(DigitList &value, UErrorCode &status) const; - - /** - * Converts value to a mantissa and exponent. - * - * @param value modified in place to be the mantissa. Depending on - * the precision settings, the resulting mantissa may not fall - * between 1.0 and 10.0. - * @return the exponent of value. - */ - int32_t toScientific(DigitList &value) const; - - /** - * Returns TRUE if this object equals rhs. - */ - UBool equals(const ScientificPrecision &rhs) const { - return fMantissa.equals(rhs.fMantissa) && fMinExponentDigits == rhs.fMinExponentDigits; - } - - /** - * Initializes a VisibleDigitsWithExponent. - * @param value the value - * Caller must not assume that the value of this parameter will remain - * unchanged. - * @param digits This is the value that is initialized. - * @param status any error returned here. - * @return digits - */ - VisibleDigitsWithExponent &initVisibleDigitsWithExponent( - DigitList &value, - VisibleDigitsWithExponent &digits, - UErrorCode &status) const; - - /** - * Initializes a VisibleDigitsWithExponent. - * @param value the value - * @param digits This is the value that is initialized. - * @param status any error returned here. - * @return digits - */ - VisibleDigitsWithExponent &initVisibleDigitsWithExponent( - double value, - VisibleDigitsWithExponent &digits, - UErrorCode &status) const; - - /** - * Initializes a VisibleDigitsWithExponent. - * @param value the value - * @param digits This is the value that is initialized. - * @param status any error returned here. - * @return digits - */ - VisibleDigitsWithExponent &initVisibleDigitsWithExponent( - int64_t value, - VisibleDigitsWithExponent &digits, - UErrorCode &status) const; - -private: - int32_t getMultiplier() const; - -}; - - - -U_NAMESPACE_END -#endif // #if !UCONFIG_NO_FORMATTING -#endif // __PRECISION_H__ |