X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=libdecnumber%2FdecNumber.h;h=05ccb9fdf56f1fde3364df146636c7f08fff2d67;hb=a2dd7f8c0a1412852ba65b4519f6aa03a4bc2053;hp=a4c45d0305299a8f7961c802ec07879d18a464f2;hpb=84d7eab915eec8a7edd056bc6f60e087e207e183;p=pf3gnuchains%2Fgcc-fork.git diff --git a/libdecnumber/decNumber.h b/libdecnumber/decNumber.h index a4c45d03052..05ccb9fdf56 100644 --- a/libdecnumber/decNumber.h +++ b/libdecnumber/decNumber.h @@ -1,12 +1,12 @@ -/* Decimal Number module header for the decNumber C Library - Copyright (C) 2005 Free Software Foundation, Inc. +/* Decimal number arithmetic module header for the decNumber C Library. + Copyright (C) 2005, 2007, 2009 Free Software Foundation, Inc. Contributed by IBM Corporation. Author Mike Cowlishaw. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free - Software Foundation; either version 2, or (at your option) any later + Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY @@ -14,170 +14,190 @@ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - You should have received a copy of the GNU General Public License - along with GCC; see the file COPYING. If not, write to the Free - Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA - 02110-1301, USA. */ +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. -#if !defined(DECNUMBER) -#define DECNUMBER -#define DECNAME "decNumber" /* Short name */ -#define DECVERSION "decNumber 3.24" /* Version [16 max.] */ -#define DECFULLNAME "Decimal Number Module" /* Verbose name */ -#define DECAUTHOR "Mike Cowlishaw" /* Who to blame */ - -#if !defined(DECCONTEXT) -#include "decContext.h" -#endif - - - /* Bit settings for decNumber.bits */ -#define DECNEG 0x80 /* Sign; 1=negative, 0=positive or zero */ -#define DECINF 0x40 /* 1=Infinity */ -#define DECNAN 0x20 /* 1=NaN */ -#define DECSNAN 0x10 /* 1=sNaN */ - /* The remaining bits are reserved; they must be 0 */ -#define DECSPECIAL (DECINF|DECNAN|DECSNAN) /* any special value */ - - /* DECNUMDIGITS is the default number of digits we can hold in the */ - /* structure. If undefined, 1 is assumed and it is assumed that the */ - /* structure will be immediately followed by extra space (if */ - /* required). DECNUMDIGITS is always >0. */ -#if !defined(DECNUMDIGITS) -#define DECNUMDIGITS 1 -#endif +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +. */ +/* ------------------------------------------------------------------ */ +/* Decimal Number arithmetic module header */ +/* ------------------------------------------------------------------ */ - /* 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 */ +#if !defined(DECNUMBER) + #define DECNUMBER + #define DECNAME "decNumber" /* Short name */ + #define DECFULLNAME "Decimal Number Module" /* Verbose name */ + #define DECAUTHOR "Mike Cowlishaw" /* Who to blame */ + + #if !defined(DECCONTEXT) + #include "decContext.h" + #endif + + /* Bit settings for decNumber.bits */ + #define DECNEG 0x80 /* Sign; 1=negative, 0=positive or zero */ + #define DECINF 0x40 /* 1=Infinity */ + #define DECNAN 0x20 /* 1=NaN */ + #define DECSNAN 0x10 /* 1=sNaN */ + /* The remaining bits are reserved; they must be 0 */ + #define DECSPECIAL (DECINF|DECNAN|DECSNAN) /* any special value */ + + /* 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. */ -#define DECDPUN 4 /* Decimal Digits Per UNit [must be in */ - /* range 1-9; power of 2 recommended]. */ - /* The size (integer data type) of each unit is determined by the */ - /* number of digits it will hold. */ -#if DECDPUN<=2 -#define decNumberUnit uint8_t -#elif DECDPUN<=4 -#define decNumberUnit uint16_t -#else -#define decNumberUnit uint32_t -#endif - /* The number of decNumberUnits we need is ceiling of DECNUMDIGITS/DECDPUN */ -#define DECNUMUNITS ((DECNUMDIGITS+DECDPUN-1)/DECDPUN) - /* The data structure... */ -typedef struct -{ - int32_t digits; /* Count of digits in the coefficient; >0 */ - int32_t exponent; /* Unadjusted exponent, unbiased, in */ - /* range: -1999999997 through 999999999 */ - uint8_t bits; /* Indicator bits (see above) */ - decNumberUnit lsu[DECNUMUNITS]; /* Coefficient, from least significant unit */ -} decNumber; - - /* Notes: */ - /* 1. If digits is > DECDPUN then there will be more than one */ - /* 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 the possibly the last) */ - /* contains DECDPUN digits (e.g., a value in the range 0 through */ - /* 99999999 if DECDPUN is 8, or 0 through 9999 if DECDPUN is 4). */ - /* */ - /* 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 */ - /* ------------------------------------------------------------------ */ - -#ifdef IN_LIBGCC2 -#define decNumberFromString __decNumberFromString -#define decNumberToString __decNumberToString -#define decNumberToEngString __decNumberToEngString -#define decNumberAbs __decNumberAbs -#define decNumberAdd __decNumberAdd -#define decNumberCompare __decNumberCompare -#define decNumberDivide __decNumberDivide -#define decNumberDivideInteger __decNumberDivideInteger -#define decNumberMax __decNumberMax -#define decNumberMin __decNumberMin -#define decNumberMinus __decNumberMinus -#define decNumberMultiply __decNumberMultiply -#define decNumberNormalize __decNumberNormalize -#define decNumberPlus __decNumberPlus -#define decNumberPower __decNumberPower -#define decNumberQuantize __decNumberQuantize -#define decNumberRemainder __decNumberRemainder -#define decNumberRemainderNear __decNumberRemainderNear -#define decNumberRescale __decNumberRescale -#define decNumberSameQuantum __decNumberSameQuantum -#define decNumberSquareRoot __decNumberSquareRoot -#define decNumberSubtract __decNumberSubtract -#define decNumberToIntegralValue __decNumberToIntegralValue -#define decNumberCopy __decNumberCopy -#define decNumberTrim __decNumberTrim -#define decNumberVersion __decNumberVersion -#define decNumberZero __decNumberZero -#endif + #define DECDPUN 3 /* DECimal Digits Per UNit [must be >0 */ + /* 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 1 + #endif + + /* The size (integer data type) of each unit is determined by the */ + /* number of digits it will hold. */ + #if DECDPUN<=2 + #define decNumberUnit uint8_t + #elif DECDPUN<=4 + #define decNumberUnit uint16_t + #else + #define decNumberUnit uint32_t + #endif + /* The number of units needed is ceil(DECNUMDIGITS/DECDPUN) */ + #define DECNUMUNITS ((DECNUMDIGITS+DECDPUN-1)/DECDPUN) - /* Conversions */ -decNumber *decNumberFromString (decNumber *, char *, decContext *); -char *decNumberToString (decNumber *, char *); -char *decNumberToEngString (decNumber *, char *); - - /* Operators */ -decNumber *decNumberAbs (decNumber *, decNumber *, decContext *); -decNumber *decNumberAdd (decNumber *, decNumber *, decNumber *, decContext *); -decNumber *decNumberCompare (decNumber *, decNumber *, decNumber *, - decContext *); -decNumber *decNumberDivide (decNumber *, decNumber *, decNumber *, - decContext *); -decNumber *decNumberDivideInteger (decNumber *, decNumber *, decNumber *, - decContext *); -decNumber *decNumberMax (decNumber *, decNumber *, decNumber *, decContext *); -decNumber *decNumberMin (decNumber *, decNumber *, decNumber *, decContext *); -decNumber *decNumberMinus (decNumber *, decNumber *, decContext *); -decNumber *decNumberMultiply (decNumber *, decNumber *, decNumber *, - decContext *); -decNumber *decNumberNormalize (decNumber *, decNumber *, decContext *); -decNumber *decNumberPlus (decNumber *, decNumber *, decContext *); -decNumber *decNumberPower (decNumber *, decNumber *, decNumber *, - decContext *); -decNumber *decNumberQuantize (decNumber *, decNumber *, decNumber *, - decContext *); -decNumber *decNumberRemainder (decNumber *, decNumber *, decNumber *, - decContext *); -decNumber *decNumberRemainderNear (decNumber *, decNumber *, decNumber *, - decContext *); -decNumber *decNumberRescale (decNumber *, decNumber *, decNumber *, - decContext *); -decNumber *decNumberSameQuantum (decNumber *, decNumber *, decNumber *); -decNumber *decNumberSquareRoot (decNumber *, decNumber *, decContext *); -decNumber *decNumberSubtract (decNumber *, decNumber *, decNumber *, - decContext *); -decNumber *decNumberToIntegralValue (decNumber *, decNumber *, decContext *); - - /* Utilities */ -decNumber *decNumberCopy (decNumber *, decNumber *); -decNumber *decNumberTrim (decNumber *); -const char *decNumberVersion (void); -decNumber *decNumberZero (decNumber *); - - /* Macros */ -#define decNumberIsZero(dn) (*(dn)->lsu==0 \ - && (dn)->digits==1 \ - && (((dn)->bits&DECSPECIAL)==0)) -#define decNumberIsNegative(dn) (((dn)->bits&DECNEG)!=0) -#define decNumberIsNaN(dn) (((dn)->bits&(DECNAN|DECSNAN))!=0) -#define decNumberIsInfinite(dn) (((dn)->bits&DECINF)!=0) -#define decNumberNegate(dn) (((dn)->bits)^=DECNEG) + /* The data structure... */ + typedef struct { + int32_t digits; /* Count of digits in the coefficient; >0 */ + int32_t exponent; /* Unadjusted exponent, unbiased, in */ + /* range: -1999999997 through 999999999 */ + uint8_t bits; /* Indicator bits (see above) */ + /* Coefficient, from least significant unit */ + decNumberUnit lsu[DECNUMUNITS]; + } 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 */ + /* ---------------------------------------------------------------- */ + + #include "decNumberSymbols.h" + + #ifdef __cplusplus + extern "C" { + #endif + + /* Conversions */ + decNumber * decNumberFromInt32(decNumber *, int32_t); + decNumber * decNumberFromUInt32(decNumber *, uint32_t); + decNumber * decNumberFromString(decNumber *, const char *, decContext *); + char * decNumberToString(const decNumber *, char *); + char * decNumberToEngString(const decNumber *, char *); + uint32_t decNumberToUInt32(const decNumber *, decContext *); + int32_t decNumberToInt32(const decNumber *, decContext *); + uint8_t * decNumberGetBCD(const decNumber *, uint8_t *); + decNumber * decNumberSetBCD(decNumber *, const uint8_t *, uint32_t); + + /* Operators and elementary functions */ + decNumber * decNumberAbs(decNumber *, const decNumber *, decContext *); + decNumber * decNumberAdd(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberAnd(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberCompare(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberCompareSignal(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberCompareTotal(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberCompareTotalMag(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberDivide(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberDivideInteger(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberExp(decNumber *, const decNumber *, decContext *); + decNumber * decNumberFMA(decNumber *, const decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberInvert(decNumber *, const decNumber *, decContext *); + decNumber * decNumberLn(decNumber *, const decNumber *, decContext *); + decNumber * decNumberLogB(decNumber *, const decNumber *, decContext *); + decNumber * decNumberLog10(decNumber *, const decNumber *, decContext *); + decNumber * decNumberMax(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberMaxMag(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberMin(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberMinMag(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberMinus(decNumber *, const decNumber *, decContext *); + decNumber * decNumberMultiply(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberNormalize(decNumber *, const decNumber *, decContext *); + decNumber * decNumberOr(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberPlus(decNumber *, const decNumber *, decContext *); + decNumber * decNumberPower(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberQuantize(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberReduce(decNumber *, const decNumber *, decContext *); + decNumber * decNumberRemainder(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberRemainderNear(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberRescale(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberRotate(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberSameQuantum(decNumber *, const decNumber *, const decNumber *); + decNumber * decNumberScaleB(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberShift(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberSquareRoot(decNumber *, const decNumber *, decContext *); + decNumber * decNumberSubtract(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberToIntegralExact(decNumber *, const decNumber *, decContext *); + decNumber * decNumberToIntegralValue(decNumber *, const decNumber *, decContext *); + decNumber * decNumberXor(decNumber *, const decNumber *, const decNumber *, decContext *); + + /* Utilities */ + enum decClass decNumberClass(const decNumber *, decContext *); + const char * decNumberClassToString(enum decClass); + decNumber * decNumberCopy(decNumber *, const decNumber *); + decNumber * decNumberCopyAbs(decNumber *, const decNumber *); + decNumber * decNumberCopyNegate(decNumber *, const decNumber *); + decNumber * decNumberCopySign(decNumber *, const decNumber *, const decNumber *); + decNumber * decNumberNextMinus(decNumber *, const decNumber *, decContext *); + decNumber * decNumberNextPlus(decNumber *, const decNumber *, decContext *); + decNumber * decNumberNextToward(decNumber *, const decNumber *, const decNumber *, decContext *); + decNumber * decNumberTrim(decNumber *); + const char * decNumberVersion(void); + decNumber * decNumberZero(decNumber *); + + /* Functions for testing decNumbers (normality depends on context) */ + int32_t decNumberIsNormal(const decNumber *, decContext *); + int32_t decNumberIsSubnormal(const decNumber *, decContext *); + + /* Macros for testing decNumber *dn */ + #define decNumberIsCanonical(dn) (1) /* All decNumbers are saintly */ + #define decNumberIsFinite(dn) (((dn)->bits&DECSPECIAL)==0) + #define decNumberIsInfinite(dn) (((dn)->bits&DECINF)!=0) + #define decNumberIsNaN(dn) (((dn)->bits&(DECNAN|DECSNAN))!=0) + #define decNumberIsNegative(dn) (((dn)->bits&DECNEG)!=0) + #define decNumberIsQNaN(dn) (((dn)->bits&(DECNAN))!=0) + #define decNumberIsSNaN(dn) (((dn)->bits&(DECSNAN))!=0) + #define decNumberIsSpecial(dn) (((dn)->bits&DECSPECIAL)!=0) + #define decNumberIsZero(dn) (*(dn)->lsu==0 \ + && (dn)->digits==1 \ + && (((dn)->bits&DECSPECIAL)==0)) + #define decNumberRadix(dn) (10) + + #ifdef __cplusplus + } + #endif #endif