// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ------------------------------------------------------------------ */ /* Decimal Number arithmetic module header */ /* ------------------------------------------------------------------ */ /* Copyright (c) IBM Corporation, 2000-2010. All rights reserved. */ /* */ /* This software is made available under the terms of the */ /* ICU License -- ICU 1.8.1 and later. */ /* */ /* The description and User's Guide ("The decNumber C Library") for */ /* this software is called decNumber.pdf. This document is */ /* available, together with arithmetic and format specifications, */ /* testcases, and Web links, on the General Decimal Arithmetic page. */ /* */ /* Please send comments, suggestions, and corrections to the author: */ /* [email protected] */ /* Mike Cowlishaw, IBM Fellow */ /* IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK */ /* ------------------------------------------------------------------ */ /* Modified version, for use from within ICU. * Renamed public functions, to avoid an unwanted export of the * standard names from the ICU library. * * Use ICU's uprv_malloc() and uprv_free() * * Revert comment syntax to plain C * * Remove a few compiler warnings. */ #if !defined(DECNUMBER) #define DECNUMBER #define DECNAME … #define DECFULLNAME … #define DECAUTHOR … #if !defined(DECCONTEXT) #include "decContext.h" #endif /* Bit settings for decNumber.bits */ #define DECNEG … #define DECINF … #define DECNAN … #define DECSNAN … /* The remaining bits are reserved; they must be 0 */ #define DECSPECIAL … /* Define the decNumber data structure. The size and shape of the */ /* units array in the structure is determined by the following */ /* constant. This must not be changed without recompiling the */ /* decNumber library modules. */ /* For ICU, use one digit per byte, to make it easier to emulate the * old DigitList interface on top of a decNumber */ #define DECDPUN … /* and <10; 3 or powers of 2 are best]. */ /* DECNUMDIGITS is the default number of digits that can be held in */ /* the structure. If undefined, 1 is assumed and it is assumed */ /* that the structure will be immediately followed by extra space, */ /* as required. DECNUMDIGITS is always >0. */ #if !defined(DECNUMDIGITS) #define DECNUMDIGITS … #endif /* The size (integer data type) of each unit is determined by the */ /* number of digits it will hold. */ #if DECDPUN<=2 #define decNumberUnit … #elif DECDPUN<=4 #define decNumberUnit … #else #define decNumberUnit … #endif /* The number of units needed is ceil(DECNUMDIGITS/DECDPUN) */ #define DECNUMUNITS … /* The data structure... */ decNumber; /* Notes: */ /* 1. If digits is > DECDPUN then there will one or more */ /* decNumberUnits immediately following the first element of lsu.*/ /* These contain the remaining (more significant) digits of the */ /* number, and may be in the lsu array, or may be guaranteed by */ /* some other mechanism (such as being contained in another */ /* structure, or being overlaid on dynamically allocated */ /* storage). */ /* */ /* Each integer of the coefficient (except potentially the last) */ /* contains DECDPUN digits (e.g., a value in the range 0 through */ /* 99999999 if DECDPUN is 8, or 0 through 999 if DECDPUN is 3). */ /* */ /* 2. A decNumber converted to a string may need up to digits+14 */ /* characters. The worst cases (non-exponential and exponential */ /* formats) are -0.00000{9...}# and -9.{9...}E+999999999# */ /* (where # is '\0') */ /* ---------------------------------------------------------------- */ /* decNumber public functions and macros */ /* ---------------------------------------------------------------- */ /* Conversions */ U_CAPI decNumber * U_EXPORT2 uprv_decNumberFromInt32(decNumber *, int32_t); U_CAPI decNumber * U_EXPORT2 uprv_decNumberFromUInt32(decNumber *, uint32_t); U_CAPI decNumber * U_EXPORT2 uprv_decNumberFromString(decNumber *, const char *, decContext *); U_CAPI char * U_EXPORT2 uprv_decNumberToString(const decNumber *, char *); U_CAPI char * U_EXPORT2 uprv_decNumberToEngString(const decNumber *, char *); U_CAPI uint32_t U_EXPORT2 uprv_decNumberToUInt32(const decNumber *, decContext *); U_CAPI int32_t U_EXPORT2 uprv_decNumberToInt32(const decNumber *, decContext *); U_CAPI uint8_t * U_EXPORT2 uprv_decNumberGetBCD(const decNumber *, uint8_t *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberSetBCD(decNumber *, const uint8_t *, uint32_t); /* Operators and elementary functions */ U_CAPI decNumber * U_EXPORT2 uprv_decNumberAbs(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberAdd(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberAnd(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberCompare(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberCompareSignal(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberCompareTotal(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberCompareTotalMag(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberDivide(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberDivideInteger(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberExp(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberFMA(decNumber *, const decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberInvert(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberLn(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberLogB(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberLog10(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberMax(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberMaxMag(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberMin(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberMinMag(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberMinus(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberMultiply(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberNormalize(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberOr(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberPlus(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberPower(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberQuantize(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberReduce(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberRemainder(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberRemainderNear(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberRescale(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberRotate(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberSameQuantum(decNumber *, const decNumber *, const decNumber *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberScaleB(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberShift(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberSquareRoot(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberSubtract(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberToIntegralExact(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberToIntegralValue(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberXor(decNumber *, const decNumber *, const decNumber *, decContext *); /* Utilities */ enum decClass uprv_decNumberClass(const decNumber *, decContext *); U_CAPI const char * U_EXPORT2 uprv_decNumberClassToString(enum decClass); U_CAPI decNumber * U_EXPORT2 uprv_decNumberCopy(decNumber *, const decNumber *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberCopyAbs(decNumber *, const decNumber *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberCopyNegate(decNumber *, const decNumber *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberCopySign(decNumber *, const decNumber *, const decNumber *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberNextMinus(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberNextPlus(decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberNextToward(decNumber *, const decNumber *, const decNumber *, decContext *); U_CAPI decNumber * U_EXPORT2 uprv_decNumberTrim(decNumber *); U_CAPI const char * U_EXPORT2 uprv_decNumberVersion(); U_CAPI decNumber * U_EXPORT2 uprv_decNumberZero(decNumber *); /* Functions for testing decNumbers (normality depends on context) */ U_CAPI int32_t U_EXPORT2 uprv_decNumberIsNormal(const decNumber *, decContext *); U_CAPI int32_t U_EXPORT2 uprv_decNumberIsSubnormal(const decNumber *, decContext *); /* Macros for testing decNumber *dn */ #define decNumberIsCanonical(dn) … #define decNumberIsFinite(dn) … #define decNumberIsInfinite(dn) … #define decNumberIsNaN(dn) … #define decNumberIsNegative(dn) … #define decNumberIsQNaN(dn) … #define decNumberIsSNaN(dn) … #define decNumberIsSpecial(dn) … #define decNumberIsZero(dn) … #define decNumberRadix(dn) … #endif
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