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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libdecnumber/] [decQuad.h] - Rev 753
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/* decQuad module header for the decNumber C Library. Copyright (C) 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 3, 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. 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. 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 <http://www.gnu.org/licenses/>. */ /* ------------------------------------------------------------------ */ /* decQuad.h -- Decimal 128-bit format module header */ /* ------------------------------------------------------------------ */ /* This include file is always included by decSingle and decDouble, */ /* and therefore also holds useful constants used by all three. */ #if !defined(DECQUAD) #define DECQUAD #define DECQUADNAME "decimalQuad" /* Short name */ #define DECQUADTITLE "Decimal 128-bit datum" /* Verbose name */ #define DECQUADAUTHOR "Mike Cowlishaw" /* Who to blame */ /* parameters for decQuads */ #define DECQUAD_Bytes 16 /* length */ #define DECQUAD_Pmax 34 /* maximum precision (digits) */ #define DECQUAD_Emin -6143 /* minimum adjusted exponent */ #define DECQUAD_Emax 6144 /* maximum adjusted exponent */ #define DECQUAD_EmaxD 4 /* maximum exponent digits */ #define DECQUAD_Bias 6176 /* bias for the exponent */ #define DECQUAD_String 43 /* maximum string length, +1 */ #define DECQUAD_EconL 12 /* exponent continuation length */ #define DECQUAD_Declets 11 /* count of declets */ /* highest biased exponent (Elimit-1) */ #define DECQUAD_Ehigh (DECQUAD_Emax + DECQUAD_Bias - (DECQUAD_Pmax-1)) /* Required include */ #include "decContext.h" /* The decQuad decimal 128-bit type, accessible by all sizes */ typedef union { uint8_t bytes[DECQUAD_Bytes]; /* fields: 1, 5, 12, 110 bits */ uint16_t shorts[DECQUAD_Bytes/2]; uint32_t words[DECQUAD_Bytes/4]; #if DECUSE64 uint64_t longs[DECQUAD_Bytes/8]; #endif } decQuad; /* ---------------------------------------------------------------- */ /* Shared constants */ /* ---------------------------------------------------------------- */ /* sign and special values [top 32-bits; last two bits are don't-care for Infinity on input, last bit don't-care for NaNs] */ #define DECFLOAT_Sign 0x80000000 /* 1 00000 00 Sign */ #define DECFLOAT_NaN 0x7c000000 /* 0 11111 00 NaN generic */ #define DECFLOAT_qNaN 0x7c000000 /* 0 11111 00 qNaN */ #define DECFLOAT_sNaN 0x7e000000 /* 0 11111 10 sNaN */ #define DECFLOAT_Inf 0x78000000 /* 0 11110 00 Infinity */ #define DECFLOAT_MinSp 0x78000000 /* minimum special value */ /* [specials are all >=MinSp] */ /* Sign nibble constants */ #if !defined(DECPPLUSALT) #define DECPPLUSALT 0x0A /* alternate plus nibble */ #define DECPMINUSALT 0x0B /* alternate minus nibble */ #define DECPPLUS 0x0C /* preferred plus nibble */ #define DECPMINUS 0x0D /* preferred minus nibble */ #define DECPPLUSALT2 0x0E /* alternate plus nibble */ #define DECPUNSIGNED 0x0F /* alternate plus nibble (unsigned) */ #endif /* ---------------------------------------------------------------- */ /* Routines -- implemented as decFloat routines in common files */ /* ---------------------------------------------------------------- */ #include "decQuadSymbols.h" /* Utilities and conversions, extractors, etc.) */ extern decQuad * decQuadFromBCD(decQuad *, int32_t, const uint8_t *, int32_t); extern decQuad * decQuadFromInt32(decQuad *, int32_t); extern decQuad * decQuadFromPacked(decQuad *, int32_t, const uint8_t *); extern decQuad * decQuadFromPackedChecked(decQuad *, int32_t, const uint8_t *); extern decQuad * decQuadFromString(decQuad *, const char *, decContext *); extern decQuad * decQuadFromUInt32(decQuad *, uint32_t); extern int32_t decQuadGetCoefficient(const decQuad *, uint8_t *); extern int32_t decQuadGetExponent(const decQuad *); extern decQuad * decQuadSetCoefficient(decQuad *, const uint8_t *, int32_t); extern decQuad * decQuadSetExponent(decQuad *, decContext *, int32_t); extern void decQuadShow(const decQuad *, const char *); extern int32_t decQuadToBCD(const decQuad *, int32_t *, uint8_t *); extern char * decQuadToEngString(const decQuad *, char *); extern int32_t decQuadToInt32(const decQuad *, decContext *, enum rounding); extern int32_t decQuadToInt32Exact(const decQuad *, decContext *, enum rounding); extern int32_t decQuadToPacked(const decQuad *, int32_t *, uint8_t *); extern char * decQuadToString(const decQuad *, char *); extern uint32_t decQuadToUInt32(const decQuad *, decContext *, enum rounding); extern uint32_t decQuadToUInt32Exact(const decQuad *, decContext *, enum rounding); extern decQuad * decQuadZero(decQuad *); /* Computational (result is a decQuad) */ extern decQuad * decQuadAbs(decQuad *, const decQuad *, decContext *); extern decQuad * decQuadAdd(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadAnd(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadDivide(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadDivideInteger(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadFMA(decQuad *, const decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadInvert(decQuad *, const decQuad *, decContext *); extern decQuad * decQuadLogB(decQuad *, const decQuad *, decContext *); extern decQuad * decQuadMax(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadMaxMag(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadMin(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadMinMag(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadMinus(decQuad *, const decQuad *, decContext *); extern decQuad * decQuadMultiply(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadNextMinus(decQuad *, const decQuad *, decContext *); extern decQuad * decQuadNextPlus(decQuad *, const decQuad *, decContext *); extern decQuad * decQuadNextToward(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadOr(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadPlus(decQuad *, const decQuad *, decContext *); extern decQuad * decQuadQuantize(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadReduce(decQuad *, const decQuad *, decContext *); extern decQuad * decQuadRemainder(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadRemainderNear(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadRotate(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadScaleB(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadShift(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadSubtract(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadToIntegralValue(decQuad *, const decQuad *, decContext *, enum rounding); extern decQuad * decQuadToIntegralExact(decQuad *, const decQuad *, decContext *); extern decQuad * decQuadXor(decQuad *, const decQuad *, const decQuad *, decContext *); /* Comparisons */ extern decQuad * decQuadCompare(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadCompareSignal(decQuad *, const decQuad *, const decQuad *, decContext *); extern decQuad * decQuadCompareTotal(decQuad *, const decQuad *, const decQuad *); extern decQuad * decQuadCompareTotalMag(decQuad *, const decQuad *, const decQuad *); /* Copies */ extern decQuad * decQuadCanonical(decQuad *, const decQuad *); extern decQuad * decQuadCopy(decQuad *, const decQuad *); extern decQuad * decQuadCopyAbs(decQuad *, const decQuad *); extern decQuad * decQuadCopyNegate(decQuad *, const decQuad *); extern decQuad * decQuadCopySign(decQuad *, const decQuad *, const decQuad *); /* Non-computational */ extern enum decClass decQuadClass(const decQuad *); extern const char * decQuadClassString(const decQuad *); extern uint32_t decQuadDigits(const decQuad *); extern uint32_t decQuadIsCanonical(const decQuad *); extern uint32_t decQuadIsFinite(const decQuad *); extern uint32_t decQuadIsInteger(const decQuad *); extern uint32_t decQuadIsInfinite(const decQuad *); extern uint32_t decQuadIsNaN(const decQuad *); extern uint32_t decQuadIsNormal(const decQuad *); extern uint32_t decQuadIsSignaling(const decQuad *); extern uint32_t decQuadIsSignalling(const decQuad *); extern uint32_t decQuadIsSigned(const decQuad *); extern uint32_t decQuadIsSubnormal(const decQuad *); extern uint32_t decQuadIsZero(const decQuad *); extern uint32_t decQuadRadix(const decQuad *); extern uint32_t decQuadSameQuantum(const decQuad *, const decQuad *); extern const char * decQuadVersion(void); /* decNumber conversions; these are implemented as macros so as not */ /* to force a dependency on decimal128 and decNumber in decQuad. */ /* decQuadFromNumber returns a decimal128 * to avoid warnings. */ #define decQuadToNumber(dq, dn) decimal128ToNumber((decimal128 *)(dq), dn) #define decQuadFromNumber(dq, dn, set) decimal128FromNumber((decimal128 *)(dq), dn, set) #endif
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