/* Decimal Number module header for the decNumber C Library Copyright (C) 2005 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 version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 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. */ #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 /* 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 /* Conversions */ decNumber *decNumberFromString (decNumber *, const char *, decContext *); char *decNumberToString (const decNumber *, char *); char *decNumberToEngString (const decNumber *, char *); /* Operators */ decNumber *decNumberAbs (decNumber *, const decNumber *, decContext *); decNumber *decNumberAdd (decNumber *, const decNumber *, const decNumber *, decContext *); decNumber *decNumberCompare (decNumber *, const decNumber *, const decNumber *, decContext *); decNumber *decNumberDivide (decNumber *, const decNumber *, const decNumber *, decContext *); decNumber *decNumberDivideInteger (decNumber *, const decNumber *, const decNumber *, decContext *); decNumber *decNumberMax (decNumber *, const decNumber *, const decNumber *, decContext *); decNumber *decNumberMin (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 *decNumberPlus (decNumber *, const decNumber *, decContext *); decNumber *decNumberPower (decNumber *, const decNumber *, const decNumber *, decContext *); decNumber *decNumberQuantize (decNumber *, const 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 *decNumberSameQuantum (decNumber *, const decNumber *, const decNumber *); decNumber *decNumberSquareRoot (decNumber *, const decNumber *, decContext *); decNumber *decNumberSubtract (decNumber *, const decNumber *, const decNumber *, decContext *); decNumber *decNumberToIntegralValue (decNumber *, const decNumber *, decContext *); /* Utilities */ decNumber *decNumberCopy (decNumber *, const 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) #endif