libdecnumber/decDouble.c

   1 /* decDouble module for the decNumber C Library.
   2    Copyright (C) 2007, 2009 Free Software Foundation, Inc.
   3    Contributed by IBM Corporation.  Author Mike Cowlishaw.
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it under
   8    the terms of the GNU General Public License as published by the Free
   9    Software Foundation; either version 3, or (at your option) any later
  10    version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13    WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15    for more details.
  16
  17 Under Section 7 of GPL version 3, you are granted additional
  18 permissions described in the GCC Runtime Library Exception, version
  19 3.1, as published by the Free Software Foundation.
  20
  21 You should have received a copy of the GNU General Public License and
  22 a copy of the GCC Runtime Library Exception along with this program;
  23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 <http://www.gnu.org/licenses/>.  */
  25
  26 /* ------------------------------------------------------------------ */
  27 /* decDouble.c -- decDouble operations module                         */
  28 /* ------------------------------------------------------------------ */
  29 /* This module comprises decDouble operations (including conversions) */
  30 /* ------------------------------------------------------------------ */
  31
  32 #include "decContext.h"       /* public includes */
  33 #include "decDouble.h"        /* .. */
  34
  35 /* Constant mappings for shared code */
  36 #define DECPMAX     DECDOUBLE_Pmax
  37 #define DECEMIN     DECDOUBLE_Emin
  38 #define DECEMAX     DECDOUBLE_Emax
  39 #define DECEMAXD    DECDOUBLE_EmaxD
  40 #define DECBYTES    DECDOUBLE_Bytes
  41 #define DECSTRING   DECDOUBLE_String
  42 #define DECECONL    DECDOUBLE_EconL
  43 #define DECBIAS     DECDOUBLE_Bias
  44 #define DECLETS     DECDOUBLE_Declets
  45 #define DECQTINY    (-DECDOUBLE_Bias)
  46 /* parameters of next-wider format */
  47 #define DECWBYTES   DECQUAD_Bytes
  48 #define DECWPMAX    DECQUAD_Pmax
  49 #define DECWECONL   DECQUAD_EconL
  50 #define DECWBIAS    DECQUAD_Bias
  51
  52 /* Type and function mappings for shared code */
  53 #define decFloat                   decDouble      /* Type name */
  54 #define decFloatWider              decQuad        /* Type name */
  55
  56 /* Utilities and conversions (binary results, extractors, etc.) */
  57 #define decFloatFromBCD            decDoubleFromBCD
  58 #define decFloatFromInt32          decDoubleFromInt32
  59 #define decFloatFromPacked         decDoubleFromPacked
  60 #define decFloatFromPackedChecked  decDoubleFromPackedChecked
  61 #define decFloatFromString         decDoubleFromString
  62 #define decFloatFromUInt32         decDoubleFromUInt32
  63 #define decFloatFromWider          decDoubleFromWider
  64 #define decFloatGetCoefficient     decDoubleGetCoefficient
  65 #define decFloatGetExponent        decDoubleGetExponent
  66 #define decFloatSetCoefficient     decDoubleSetCoefficient
  67 #define decFloatSetExponent        decDoubleSetExponent
  68 #define decFloatShow               decDoubleShow
  69 #define decFloatToBCD              decDoubleToBCD
  70 #define decFloatToEngString        decDoubleToEngString
  71 #define decFloatToInt32            decDoubleToInt32
  72 #define decFloatToInt32Exact       decDoubleToInt32Exact
  73 #define decFloatToPacked           decDoubleToPacked
  74 #define decFloatToString           decDoubleToString
  75 #define decFloatToUInt32           decDoubleToUInt32
  76 #define decFloatToUInt32Exact      decDoubleToUInt32Exact
  77 #define decFloatToWider            decDoubleToWider
  78 #define decFloatZero               decDoubleZero
  79
  80 /* Computational (result is a decFloat) */
  81 #define decFloatAbs                decDoubleAbs
  82 #define decFloatAdd                decDoubleAdd
  83 #define decFloatAnd                decDoubleAnd
  84 #define decFloatDivide             decDoubleDivide
  85 #define decFloatDivideInteger      decDoubleDivideInteger
  86 #define decFloatFMA                decDoubleFMA
  87 #define decFloatInvert             decDoubleInvert
  88 #define decFloatLogB               decDoubleLogB
  89 #define decFloatMax                decDoubleMax
  90 #define decFloatMaxMag             decDoubleMaxMag
  91 #define decFloatMin                decDoubleMin
  92 #define decFloatMinMag             decDoubleMinMag
  93 #define decFloatMinus              decDoubleMinus
  94 #define decFloatMultiply           decDoubleMultiply
  95 #define decFloatNextMinus          decDoubleNextMinus
  96 #define decFloatNextPlus           decDoubleNextPlus
  97 #define decFloatNextToward         decDoubleNextToward
  98 #define decFloatOr                 decDoubleOr
  99 #define decFloatPlus               decDoublePlus
 100 #define decFloatQuantize           decDoubleQuantize
 101 #define decFloatReduce             decDoubleReduce
 102 #define decFloatRemainder          decDoubleRemainder
 103 #define decFloatRemainderNear      decDoubleRemainderNear
 104 #define decFloatRotate             decDoubleRotate
 105 #define decFloatScaleB             decDoubleScaleB
 106 #define decFloatShift              decDoubleShift
 107 #define decFloatSubtract           decDoubleSubtract
 108 #define decFloatToIntegralValue    decDoubleToIntegralValue
 109 #define decFloatToIntegralExact    decDoubleToIntegralExact
 110 #define decFloatXor                decDoubleXor
 111
 112 /* Comparisons */
 113 #define decFloatCompare            decDoubleCompare
 114 #define decFloatCompareSignal      decDoubleCompareSignal
 115 #define decFloatCompareTotal       decDoubleCompareTotal
 116 #define decFloatCompareTotalMag    decDoubleCompareTotalMag
 117
 118 /* Copies */
 119 #define decFloatCanonical          decDoubleCanonical
 120 #define decFloatCopy               decDoubleCopy
 121 #define decFloatCopyAbs            decDoubleCopyAbs
 122 #define decFloatCopyNegate         decDoubleCopyNegate
 123 #define decFloatCopySign           decDoubleCopySign
 124
 125 /* Non-computational */
 126 #define decFloatClass              decDoubleClass
 127 #define decFloatClassString        decDoubleClassString
 128 #define decFloatDigits             decDoubleDigits
 129 #define decFloatIsCanonical        decDoubleIsCanonical
 130 #define decFloatIsFinite           decDoubleIsFinite
 131 #define decFloatIsInfinite         decDoubleIsInfinite
 132 #define decFloatIsInteger          decDoubleIsInteger
 133 #define decFloatIsNaN              decDoubleIsNaN
 134 #define decFloatIsNormal           decDoubleIsNormal
 135 #define decFloatIsSignaling        decDoubleIsSignaling
 136 #define decFloatIsSignalling       decDoubleIsSignalling
 137 #define decFloatIsSigned           decDoubleIsSigned
 138 #define decFloatIsSubnormal        decDoubleIsSubnormal
 139 #define decFloatIsZero             decDoubleIsZero
 140 #define decFloatRadix              decDoubleRadix
 141 #define decFloatSameQuantum        decDoubleSameQuantum
 142 #define decFloatVersion            decDoubleVersion
 143
 144 #include "decNumberLocal.h"   /* local includes (need DECPMAX) */
 145 #include "decCommon.c"        /* non-arithmetic decFloat routines */
 146 #include "decBasic.c"         /* basic formats routines */
 147