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Diffstat (limited to 'libdecnumber/decDouble.h')
| -rw-r--r-- | libdecnumber/decDouble.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/libdecnumber/decDouble.h b/libdecnumber/decDouble.h new file mode 100644 index 0000000..32eba39 --- /dev/null +++ b/libdecnumber/decDouble.h @@ -0,0 +1,164 @@ +/* decDouble module header for the decNumber C Library. + Copyright (C) 2007 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. + + In addition to the permissions in the GNU General Public License, + the Free Software Foundation gives you unlimited permission to link + the compiled version of this file into combinations with other + programs, and to distribute those combinations without any + restriction coming from the use of this file. (The General Public + License restrictions do apply in other respects; for example, they + cover modification of the file, and distribution when not linked + into a combine executable.) + + 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. */ + +/* ------------------------------------------------------------------ */ +/* decDouble.h -- Decimal 64-bit format module header */ +/* ------------------------------------------------------------------ */ +/* Please see decFloats.h for an overview and documentation details. */ +/* ------------------------------------------------------------------ */ + +#if !defined(DECDOUBLE) + #define DECDOUBLE + + #define DECDOUBLENAME "decimalDouble" /* Short name */ + #define DECDOUBLETITLE "Decimal 64-bit datum" /* Verbose name */ + #define DECDOUBLEAUTHOR "Mike Cowlishaw" /* Who to blame */ + + /* parameters for decDoubles */ + #define DECDOUBLE_Bytes 8 /* length */ + #define DECDOUBLE_Pmax 16 /* maximum precision (digits) */ + #define DECDOUBLE_Emin -383 /* minimum adjusted exponent */ + #define DECDOUBLE_Emax 384 /* maximum adjusted exponent */ + #define DECDOUBLE_EmaxD 3 /* maximum exponent digits */ + #define DECDOUBLE_Bias 398 /* bias for the exponent */ + #define DECDOUBLE_String 25 /* maximum string length, +1 */ + #define DECDOUBLE_EconL 8 /* exponent continuation length */ + #define DECDOUBLE_Declets 5 /* count of declets */ + /* highest biased exponent (Elimit-1) */ + #define DECDOUBLE_Ehigh (DECDOUBLE_Emax + DECDOUBLE_Bias - (DECDOUBLE_Pmax-1)) + + /* Required includes */ + #include "decContext.h" + #include "decQuad.h" + + /* The decDouble decimal 64-bit type, accessible by bytes */ + typedef struct { + uint8_t bytes[DECDOUBLE_Bytes]; /* fields: 1, 5, 8, 50 bits */ + } decDouble; + + /* ---------------------------------------------------------------- */ + /* Routines -- implemented as decFloat routines in common files */ + /* ---------------------------------------------------------------- */ + + #include "decDoubleSymbols.h" + + /* Utilities and conversions, extractors, etc.) */ + extern decDouble * decDoubleFromBCD(decDouble *, int32_t, const uint8_t *, int32_t); + extern decDouble * decDoubleFromInt32(decDouble *, int32_t); + extern decDouble * decDoubleFromPacked(decDouble *, int32_t, const uint8_t *); + extern decDouble * decDoubleFromString(decDouble *, const char *, decContext *); + extern decDouble * decDoubleFromUInt32(decDouble *, uint32_t); + extern decDouble * decDoubleFromWider(decDouble *, const decQuad *, decContext *); + extern int32_t decDoubleGetCoefficient(const decDouble *, uint8_t *); + extern int32_t decDoubleGetExponent(const decDouble *); + extern decDouble * decDoubleSetCoefficient(decDouble *, const uint8_t *, int32_t); + extern decDouble * decDoubleSetExponent(decDouble *, decContext *, int32_t); + extern void decDoubleShow(const decDouble *, const char *); + extern int32_t decDoubleToBCD(const decDouble *, int32_t *, uint8_t *); + extern char * decDoubleToEngString(const decDouble *, char *); + extern int32_t decDoubleToInt32(const decDouble *, decContext *, enum rounding); + extern int32_t decDoubleToInt32Exact(const decDouble *, decContext *, enum rounding); + extern int32_t decDoubleToPacked(const decDouble *, int32_t *, uint8_t *); + extern char * decDoubleToString(const decDouble *, char *); + extern uint32_t decDoubleToUInt32(const decDouble *, decContext *, enum rounding); + extern uint32_t decDoubleToUInt32Exact(const decDouble *, decContext *, enum rounding); + extern decQuad * decDoubleToWider(const decDouble *, decQuad *); + extern decDouble * decDoubleZero(decDouble *); + + /* Computational (result is a decDouble) */ + extern decDouble * decDoubleAbs(decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleAdd(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleAnd(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleDivide(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleDivideInteger(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleFMA(decDouble *, const decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleInvert(decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleLogB(decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleMax(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleMaxMag(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleMin(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleMinMag(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleMinus(decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleMultiply(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleNextMinus(decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleNextPlus(decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleNextToward(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleOr(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoublePlus(decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleQuantize(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleReduce(decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleRemainder(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleRemainderNear(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleRotate(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleScaleB(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleShift(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleSubtract(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleToIntegralValue(decDouble *, const decDouble *, decContext *, enum rounding); + extern decDouble * decDoubleToIntegralExact(decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleXor(decDouble *, const decDouble *, const decDouble *, decContext *); + + /* Comparisons */ + extern decDouble * decDoubleCompare(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleCompareSignal(decDouble *, const decDouble *, const decDouble *, decContext *); + extern decDouble * decDoubleCompareTotal(decDouble *, const decDouble *, const decDouble *); + extern decDouble * decDoubleCompareTotalMag(decDouble *, const decDouble *, const decDouble *); + + /* Copies */ + extern decDouble * decDoubleCanonical(decDouble *, const decDouble *); + extern decDouble * decDoubleCopy(decDouble *, const decDouble *); + extern decDouble * decDoubleCopyAbs(decDouble *, const decDouble *); + extern decDouble * decDoubleCopyNegate(decDouble *, const decDouble *); + extern decDouble * decDoubleCopySign(decDouble *, const decDouble *, const decDouble *); + + /* Non-computational */ + extern enum decClass decDoubleClass(const decDouble *); + extern const char * decDoubleClassString(const decDouble *); + extern uint32_t decDoubleDigits(const decDouble *); + extern uint32_t decDoubleIsCanonical(const decDouble *); + extern uint32_t decDoubleIsFinite(const decDouble *); + extern uint32_t decDoubleIsInfinite(const decDouble *); + extern uint32_t decDoubleIsInteger(const decDouble *); + extern uint32_t decDoubleIsNaN(const decDouble *); + extern uint32_t decDoubleIsNormal(const decDouble *); + extern uint32_t decDoubleIsSignaling(const decDouble *); + extern uint32_t decDoubleIsSignalling(const decDouble *); + extern uint32_t decDoubleIsSigned(const decDouble *); + extern uint32_t decDoubleIsSubnormal(const decDouble *); + extern uint32_t decDoubleIsZero(const decDouble *); + extern uint32_t decDoubleRadix(const decDouble *); + extern uint32_t decDoubleSameQuantum(const decDouble *, const decDouble *); + extern const char * decDoubleVersion(void); + + /* decNumber conversions; these are implemented as macros so as not */ + /* to force a dependency on decimal64 and decNumber in decDouble. */ + #define decDoubleToNumber(dq, dn) decimal64ToNumber((decimal64 *)(dq), dn) + #define decDoubleFromNumber(dq, dn, set) (decDouble *)decimal64FromNumber((decimal64 *)(dq), dn, set) + +#endif |