Mercurial > hg > CbC > CbC_gcc
annotate libdecnumber/decNumberLocal.h @ 88:f214c1d5b862
merge 89
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 20 Dec 2011 18:53:46 +0900 |
| parents | 77e2b8dfacca |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Local definitions 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 /* decNumber package local type, tuning, and macro definitions */ | |
| 28 /* ------------------------------------------------------------------ */ | |
|
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29 /* This header file is included by all modules in the decNumber */ |
| 0 | 30 /* library, and contains local type definitions, tuning parameters, */ |
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31 /* etc. It should not need to be used by application programs. */ |
| 0 | 32 /* decNumber.h or one of decDouble (etc.) must be included first. */ |
| 33 /* ------------------------------------------------------------------ */ | |
| 34 | |
| 35 #if !defined(DECNUMBERLOC) | |
| 36 #define DECNUMBERLOC | |
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37 #define DECVERSION "decNumber 3.61" /* Package Version [16 max.] */ |
| 0 | 38 #define DECNLAUTHOR "Mike Cowlishaw" /* Who to blame */ |
| 39 | |
| 40 #include <stdlib.h> /* for abs */ | |
| 41 #include <string.h> /* for memset, strcpy */ | |
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42 #include "dconfig.h" /* for WORDS_BIGENDIAN */ |
| 0 | 43 |
| 44 /* Conditional code flag -- set this to match hardware platform */ | |
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45 /* 1=little-endian, 0=big-endian */ |
| 0 | 46 #if WORDS_BIGENDIAN |
| 47 #define DECLITEND 0 | |
| 48 #else | |
| 49 #define DECLITEND 1 | |
| 50 #endif | |
| 51 | |
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52 #if !defined(DECLITEND) |
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53 #define DECLITEND 1 /* 1=little-endian, 0=big-endian */ |
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54 #endif |
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55 |
| 0 | 56 /* Conditional code flag -- set this to 1 for best performance */ |
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57 #if !defined(DECUSE64) |
| 0 | 58 #define DECUSE64 1 /* 1=use int64s, 0=int32 & smaller only */ |
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59 #endif |
| 0 | 60 |
| 61 /* Conditional check flags -- set these to 0 for best performance */ | |
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62 #if !defined(DECCHECK) |
| 0 | 63 #define DECCHECK 0 /* 1 to enable robust checking */ |
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64 #endif |
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65 #if !defined(DECALLOC) |
| 0 | 66 #define DECALLOC 0 /* 1 to enable memory accounting */ |
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67 #endif |
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68 #if !defined(DECTRACE) |
| 0 | 69 #define DECTRACE 0 /* 1 to trace certain internals, etc. */ |
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70 #endif |
| 0 | 71 |
| 72 /* Tuning parameter for decNumber (arbitrary precision) module */ | |
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73 #if !defined(DECBUFFER) |
| 0 | 74 #define DECBUFFER 36 /* Size basis for local buffers. This */ |
| 75 /* should be a common maximum precision */ | |
| 76 /* rounded up to a multiple of 4; must */ | |
| 77 /* be zero or positive. */ | |
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78 #endif |
| 0 | 79 |
| 80 /* ---------------------------------------------------------------- */ | |
| 81 /* Definitions for all modules (general-purpose) */ | |
| 82 /* ---------------------------------------------------------------- */ | |
| 83 | |
| 84 /* Local names for common types -- for safety, decNumber modules do */ | |
| 85 /* not use int or long directly. */ | |
| 86 #define Flag uint8_t | |
| 87 #define Byte int8_t | |
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88 #define uByte uint8_t |
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89 #define Short int16_t |
| 0 | 90 #define uShort uint16_t |
| 91 #define Int int32_t | |
| 92 #define uInt uint32_t | |
| 93 #define Unit decNumberUnit | |
| 94 #if DECUSE64 | |
| 95 #define Long int64_t | |
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96 #define uLong uint64_t |
| 0 | 97 #endif |
| 98 | |
| 99 /* Development-use definitions */ | |
| 100 typedef long int LI; /* for printf arguments only */ | |
| 101 #define DECNOINT 0 /* 1 to check no internal use of 'int' */ | |
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102 /* or stdint types */ |
| 0 | 103 #if DECNOINT |
| 104 /* if these interfere with your C includes, do not set DECNOINT */ | |
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105 #define int ? /* enable to ensure that plain C 'int' */ |
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106 #define long ?? /* .. or 'long' types are not used */ |
| 0 | 107 #endif |
| 108 | |
| 109 /* Shared lookup tables */ | |
| 110 extern const uByte DECSTICKYTAB[10]; /* re-round digits if sticky */ | |
| 111 extern const uInt DECPOWERS[10]; /* powers of ten table */ | |
| 112 /* The following are included from decDPD.h */ | |
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113 #include "decDPDSymbols.h" |
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114 extern const uShort DPD2BIN[1024]; /* DPD -> 0-999 */ |
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115 extern const uShort BIN2DPD[1000]; /* 0-999 -> DPD */ |
| 0 | 116 extern const uInt DPD2BINK[1024]; /* DPD -> 0-999000 */ |
| 117 extern const uInt DPD2BINM[1024]; /* DPD -> 0-999000000 */ | |
| 118 extern const uByte DPD2BCD8[4096]; /* DPD -> ddd + len */ | |
| 119 extern const uByte BIN2BCD8[4000]; /* 0-999 -> ddd + len */ | |
| 120 extern const uShort BCD2DPD[2458]; /* 0-0x999 -> DPD (0x999=2457)*/ | |
| 121 | |
| 122 /* LONGMUL32HI -- set w=(u*v)>>32, where w, u, and v are uInts */ | |
| 123 /* (that is, sets w to be the high-order word of the 64-bit result; */ | |
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124 /* the low-order word is simply u*v.) */ |
| 0 | 125 /* This version is derived from Knuth via Hacker's Delight; */ |
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126 /* it seems to optimize better than some others tried */ |
| 0 | 127 #define LONGMUL32HI(w, u, v) { \ |
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128 uInt u0, u1, v0, v1, w0, w1, w2, t; \ |
| 0 | 129 u0=u & 0xffff; u1=u>>16; \ |
| 130 v0=v & 0xffff; v1=v>>16; \ | |
| 131 w0=u0*v0; \ | |
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132 t=u1*v0 + (w0>>16); \ |
| 0 | 133 w1=t & 0xffff; w2=t>>16; \ |
| 134 w1=u0*v1 + w1; \ | |
| 135 (w)=u1*v1 + w2 + (w1>>16);} | |
| 136 | |
| 137 /* ROUNDUP -- round an integer up to a multiple of n */ | |
| 138 #define ROUNDUP(i, n) ((((i)+(n)-1)/n)*n) | |
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139 #define ROUNDUP4(i) (((i)+3)&~3) /* special for n=4 */ |
| 0 | 140 |
| 141 /* ROUNDDOWN -- round an integer down to a multiple of n */ | |
| 142 #define ROUNDDOWN(i, n) (((i)/n)*n) | |
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143 #define ROUNDDOWN4(i) ((i)&~3) /* special for n=4 */ |
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144 |
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145 /* References to multi-byte sequences under different sizes; these */ |
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146 /* require locally declared variables, but do not violate strict */ |
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147 /* aliasing or alignment (as did the UINTAT simple cast to uInt). */ |
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148 /* Variables needed are uswork, uiwork, etc. [so do not use at same */ |
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149 /* level in an expression, e.g., UBTOUI(x)==UBTOUI(y) may fail]. */ |
| 0 | 150 |
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151 /* Return a uInt, etc., from bytes starting at a char* or uByte* */ |
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152 #define UBTOUS(b) (memcpy((void *)&uswork, b, 2), uswork) |
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153 #define UBTOUI(b) (memcpy((void *)&uiwork, b, 4), uiwork) |
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154 |
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155 /* Store a uInt, etc., into bytes starting at a char* or uByte*. */ |
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156 /* Returns i, evaluated, for convenience; has to use uiwork because */ |
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157 /* i may be an expression. */ |
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158 #define UBFROMUS(b, i) (uswork=(i), memcpy(b, (void *)&uswork, 2), uswork) |
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159 #define UBFROMUI(b, i) (uiwork=(i), memcpy(b, (void *)&uiwork, 4), uiwork) |
| 0 | 160 |
| 161 /* X10 and X100 -- multiply integer i by 10 or 100 */ | |
| 162 /* [shifts are usually faster than multiply; could be conditional] */ | |
| 163 #define X10(i) (((i)<<1)+((i)<<3)) | |
| 164 #define X100(i) (((i)<<2)+((i)<<5)+((i)<<6)) | |
| 165 | |
| 166 /* MAXI and MINI -- general max & min (not in ANSI) for integers */ | |
| 167 #define MAXI(x,y) ((x)<(y)?(y):(x)) | |
| 168 #define MINI(x,y) ((x)>(y)?(y):(x)) | |
| 169 | |
| 170 /* Useful constants */ | |
| 171 #define BILLION 1000000000 /* 10**9 */ | |
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172 /* CHARMASK: 0x30303030 for ASCII/UTF8; 0xF0F0F0F0 for EBCDIC */ |
| 0 | 173 #define CHARMASK ((((((((uInt)'0')<<8)+'0')<<8)+'0')<<8)+'0') |
| 174 | |
| 175 | |
| 176 /* ---------------------------------------------------------------- */ | |
| 177 /* Definitions for arbitary-precision modules (only valid after */ | |
| 178 /* decNumber.h has been included) */ | |
| 179 /* ---------------------------------------------------------------- */ | |
| 180 | |
| 181 /* Limits and constants */ | |
| 182 #define DECNUMMAXP 999999999 /* maximum precision code can handle */ | |
| 183 #define DECNUMMAXE 999999999 /* maximum adjusted exponent ditto */ | |
| 184 #define DECNUMMINE -999999999 /* minimum adjusted exponent ditto */ | |
| 185 #if (DECNUMMAXP != DEC_MAX_DIGITS) | |
| 186 #error Maximum digits mismatch | |
| 187 #endif | |
| 188 #if (DECNUMMAXE != DEC_MAX_EMAX) | |
| 189 #error Maximum exponent mismatch | |
| 190 #endif | |
| 191 #if (DECNUMMINE != DEC_MIN_EMIN) | |
| 192 #error Minimum exponent mismatch | |
| 193 #endif | |
| 194 | |
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195 /* Set DECDPUNMAX -- the maximum integer that fits in DECDPUN */ |
| 0 | 196 /* digits, and D2UTABLE -- the initializer for the D2U table */ |
| 197 #if DECDPUN==1 | |
| 198 #define DECDPUNMAX 9 | |
| 199 #define D2UTABLE {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17, \ | |
| 200 18,19,20,21,22,23,24,25,26,27,28,29,30,31,32, \ | |
| 201 33,34,35,36,37,38,39,40,41,42,43,44,45,46,47, \ | |
| 202 48,49} | |
| 203 #elif DECDPUN==2 | |
| 204 #define DECDPUNMAX 99 | |
| 205 #define D2UTABLE {0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10, \ | |
| 206 11,11,12,12,13,13,14,14,15,15,16,16,17,17,18, \ | |
| 207 18,19,19,20,20,21,21,22,22,23,23,24,24,25} | |
| 208 #elif DECDPUN==3 | |
| 209 #define DECDPUNMAX 999 | |
| 210 #define D2UTABLE {0,1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7, \ | |
| 211 8,8,8,9,9,9,10,10,10,11,11,11,12,12,12,13,13, \ | |
| 212 13,14,14,14,15,15,15,16,16,16,17} | |
| 213 #elif DECDPUN==4 | |
| 214 #define DECDPUNMAX 9999 | |
| 215 #define D2UTABLE {0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6, \ | |
| 216 6,6,6,7,7,7,7,8,8,8,8,9,9,9,9,10,10,10,10,11, \ | |
| 217 11,11,11,12,12,12,12,13} | |
| 218 #elif DECDPUN==5 | |
| 219 #define DECDPUNMAX 99999 | |
| 220 #define D2UTABLE {0,1,1,1,1,1,2,2,2,2,2,3,3,3,3,3,4,4,4,4,4,5, \ | |
| 221 5,5,5,5,6,6,6,6,6,7,7,7,7,7,8,8,8,8,8,9,9,9, \ | |
| 222 9,9,10,10,10,10} | |
| 223 #elif DECDPUN==6 | |
| 224 #define DECDPUNMAX 999999 | |
| 225 #define D2UTABLE {0,1,1,1,1,1,1,2,2,2,2,2,2,3,3,3,3,3,3,4,4,4, \ | |
| 226 4,4,4,5,5,5,5,5,5,6,6,6,6,6,6,7,7,7,7,7,7,8, \ | |
| 227 8,8,8,8,8,9} | |
| 228 #elif DECDPUN==7 | |
| 229 #define DECDPUNMAX 9999999 | |
| 230 #define D2UTABLE {0,1,1,1,1,1,1,1,2,2,2,2,2,2,2,3,3,3,3,3,3,3, \ | |
| 231 4,4,4,4,4,4,4,5,5,5,5,5,5,5,6,6,6,6,6,6,6,7, \ | |
| 232 7,7,7,7,7,7} | |
| 233 #elif DECDPUN==8 | |
| 234 #define DECDPUNMAX 99999999 | |
| 235 #define D2UTABLE {0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3, \ | |
| 236 3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,6,6,6, \ | |
| 237 6,6,6,6,6,7} | |
| 238 #elif DECDPUN==9 | |
| 239 #define DECDPUNMAX 999999999 | |
| 240 #define D2UTABLE {0,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,3,3,3, \ | |
| 241 3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5, \ | |
| 242 5,5,6,6,6,6} | |
| 243 #elif defined(DECDPUN) | |
| 244 #error DECDPUN must be in the range 1-9 | |
| 245 #endif | |
| 246 | |
| 247 /* ----- Shared data (in decNumber.c) ----- */ | |
| 248 /* Public lookup table used by the D2U macro (see below) */ | |
| 249 #define DECMAXD2U 49 | |
| 250 extern const uByte d2utable[DECMAXD2U+1]; | |
| 251 | |
| 252 /* ----- Macros ----- */ | |
| 253 /* ISZERO -- return true if decNumber dn is a zero */ | |
| 254 /* [performance-critical in some situations] */ | |
| 255 #define ISZERO(dn) decNumberIsZero(dn) /* now just a local name */ | |
| 256 | |
| 257 /* D2U -- return the number of Units needed to hold d digits */ | |
| 258 /* (runtime version, with table lookaside for small d) */ | |
| 259 #if DECDPUN==8 | |
| 260 #define D2U(d) ((unsigned)((d)<=DECMAXD2U?d2utable[d]:((d)+7)>>3)) | |
| 261 #elif DECDPUN==4 | |
| 262 #define D2U(d) ((unsigned)((d)<=DECMAXD2U?d2utable[d]:((d)+3)>>2)) | |
| 263 #else | |
| 264 #define D2U(d) ((d)<=DECMAXD2U?d2utable[d]:((d)+DECDPUN-1)/DECDPUN) | |
| 265 #endif | |
| 266 /* SD2U -- static D2U macro (for compile-time calculation) */ | |
| 267 #define SD2U(d) (((d)+DECDPUN-1)/DECDPUN) | |
| 268 | |
| 269 /* MSUDIGITS -- returns digits in msu, from digits, calculated */ | |
| 270 /* using D2U */ | |
| 271 #define MSUDIGITS(d) ((d)-(D2U(d)-1)*DECDPUN) | |
| 272 | |
| 273 /* D2N -- return the number of decNumber structs that would be */ | |
| 274 /* needed to contain that number of digits (and the initial */ | |
| 275 /* decNumber struct) safely. Note that one Unit is included in the */ | |
|
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276 /* initial structure. Used for allocating space that is aligned on */ |
| 0 | 277 /* a decNumber struct boundary. */ |
| 278 #define D2N(d) \ | |
| 279 ((((SD2U(d)-1)*sizeof(Unit))+sizeof(decNumber)*2-1)/sizeof(decNumber)) | |
| 280 | |
| 281 /* TODIGIT -- macro to remove the leading digit from the unsigned */ | |
| 282 /* integer u at column cut (counting from the right, LSD=0) and */ | |
| 283 /* place it as an ASCII character into the character pointed to by */ | |
|
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284 /* c. Note that cut must be <= 9, and the maximum value for u is */ |
| 0 | 285 /* 2,000,000,000 (as is needed for negative exponents of */ |
| 286 /* subnormals). The unsigned integer pow is used as a temporary */ | |
| 287 /* variable. */ | |
| 288 #define TODIGIT(u, cut, c, pow) { \ | |
| 289 *(c)='0'; \ | |
| 290 pow=DECPOWERS[cut]*2; \ | |
| 291 if ((u)>pow) { \ | |
| 292 pow*=4; \ | |
| 293 if ((u)>=pow) {(u)-=pow; *(c)+=8;} \ | |
| 294 pow/=2; \ | |
| 295 if ((u)>=pow) {(u)-=pow; *(c)+=4;} \ | |
| 296 pow/=2; \ | |
|
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297 } \ |
| 0 | 298 if ((u)>=pow) {(u)-=pow; *(c)+=2;} \ |
| 299 pow/=2; \ | |
| 300 if ((u)>=pow) {(u)-=pow; *(c)+=1;} \ | |
| 301 } | |
| 302 | |
| 303 /* ---------------------------------------------------------------- */ | |
| 304 /* Definitions for fixed-precision modules (only valid after */ | |
| 305 /* decSingle.h, decDouble.h, or decQuad.h has been included) */ | |
| 306 /* ---------------------------------------------------------------- */ | |
| 307 | |
| 308 /* bcdnum -- a structure describing a format-independent finite */ | |
| 309 /* number, whose coefficient is a string of bcd8 uBytes */ | |
| 310 typedef struct { | |
| 311 uByte *msd; /* -> most significant digit */ | |
|
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312 uByte *lsd; /* -> least ditto */ |
| 0 | 313 uInt sign; /* 0=positive, DECFLOAT_Sign=negative */ |
|
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314 Int exponent; /* Unadjusted signed exponent (q), or */ |
| 0 | 315 /* DECFLOAT_NaN etc. for a special */ |
| 316 } bcdnum; | |
| 317 | |
| 318 /* Test if exponent or bcdnum exponent must be a special, etc. */ | |
| 319 #define EXPISSPECIAL(exp) ((exp)>=DECFLOAT_MinSp) | |
| 320 #define EXPISINF(exp) (exp==DECFLOAT_Inf) | |
| 321 #define EXPISNAN(exp) (exp==DECFLOAT_qNaN || exp==DECFLOAT_sNaN) | |
| 322 #define NUMISSPECIAL(num) (EXPISSPECIAL((num)->exponent)) | |
| 323 | |
| 324 /* Refer to a 32-bit word or byte in a decFloat (df) by big-endian */ | |
| 325 /* (array) notation (the 0 word or byte contains the sign bit), */ | |
| 326 /* automatically adjusting for endianness; similarly address a word */ | |
| 327 /* in the next-wider format (decFloatWider, or dfw) */ | |
| 328 #define DECWORDS (DECBYTES/4) | |
| 329 #define DECWWORDS (DECWBYTES/4) | |
| 330 #if DECLITEND | |
|
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331 #define DFBYTE(df, off) ((df)->bytes[DECBYTES-1-(off)]) |
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332 #define DFWORD(df, off) ((df)->words[DECWORDS-1-(off)]) |
| 0 | 333 #define DFWWORD(dfw, off) ((dfw)->words[DECWWORDS-1-(off)]) |
| 334 #else | |
|
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335 #define DFBYTE(df, off) ((df)->bytes[off]) |
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336 #define DFWORD(df, off) ((df)->words[off]) |
| 0 | 337 #define DFWWORD(dfw, off) ((dfw)->words[off]) |
| 338 #endif | |
| 339 | |
| 340 /* Tests for sign or specials, directly on DECFLOATs */ | |
| 341 #define DFISSIGNED(df) (DFWORD(df, 0)&0x80000000) | |
| 342 #define DFISSPECIAL(df) ((DFWORD(df, 0)&0x78000000)==0x78000000) | |
| 343 #define DFISINF(df) ((DFWORD(df, 0)&0x7c000000)==0x78000000) | |
| 344 #define DFISNAN(df) ((DFWORD(df, 0)&0x7c000000)==0x7c000000) | |
| 345 #define DFISQNAN(df) ((DFWORD(df, 0)&0x7e000000)==0x7c000000) | |
| 346 #define DFISSNAN(df) ((DFWORD(df, 0)&0x7e000000)==0x7e000000) | |
| 347 | |
| 348 /* Shared lookup tables */ | |
| 349 #include "decCommonSymbols.h" | |
| 350 extern const uInt DECCOMBMSD[64]; /* Combination field -> MSD */ | |
| 351 extern const uInt DECCOMBFROM[48]; /* exp+msd -> Combination */ | |
| 352 | |
| 353 /* Private generic (utility) routine */ | |
| 354 #if DECCHECK || DECTRACE | |
| 355 extern void decShowNum(const bcdnum *, const char *); | |
| 356 #endif | |
| 357 | |
| 358 /* Format-dependent macros and constants */ | |
| 359 #if defined(DECPMAX) | |
| 360 | |
|
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361 /* Useful constants */ |
| 0 | 362 #define DECPMAX9 (ROUNDUP(DECPMAX, 9)/9) /* 'Pmax' in 10**9s */ |
| 363 /* Top words for a zero */ | |
| 364 #define SINGLEZERO 0x22500000 | |
| 365 #define DOUBLEZERO 0x22380000 | |
| 366 #define QUADZERO 0x22080000 | |
| 367 /* [ZEROWORD is defined to be one of these in the DFISZERO macro] */ | |
| 368 | |
| 369 /* Format-dependent common tests: */ | |
| 370 /* DFISZERO -- test for (any) zero */ | |
| 371 /* DFISCCZERO -- test for coefficient continuation being zero */ | |
| 372 /* DFISCC01 -- test for coefficient contains only 0s and 1s */ | |
|
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373 /* DFISINT -- test for finite and exponent q=0 */ |
| 0 | 374 /* DFISUINT01 -- test for sign=0, finite, exponent q=0, and */ |
| 375 /* MSD=0 or 1 */ | |
|
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376 /* ZEROWORD is also defined here. */ |
| 0 | 377 /* In DFISZERO the first test checks the least-significant word */ |
| 378 /* (most likely to be non-zero); the penultimate tests MSD and */ | |
| 379 /* DPDs in the signword, and the final test excludes specials and */ | |
| 380 /* MSD>7. DFISINT similarly has to allow for the two forms of */ | |
| 381 /* MSD codes. DFISUINT01 only has to allow for one form of MSD */ | |
| 382 /* code. */ | |
| 383 #if DECPMAX==7 | |
| 384 #define ZEROWORD SINGLEZERO | |
| 385 /* [test macros not needed except for Zero] */ | |
| 386 #define DFISZERO(df) ((DFWORD(df, 0)&0x1c0fffff)==0 \ | |
| 387 && (DFWORD(df, 0)&0x60000000)!=0x60000000) | |
| 388 #elif DECPMAX==16 | |
| 389 #define ZEROWORD DOUBLEZERO | |
| 390 #define DFISZERO(df) ((DFWORD(df, 1)==0 \ | |
| 391 && (DFWORD(df, 0)&0x1c03ffff)==0 \ | |
| 392 && (DFWORD(df, 0)&0x60000000)!=0x60000000)) | |
| 393 #define DFISINT(df) ((DFWORD(df, 0)&0x63fc0000)==0x22380000 \ | |
| 394 ||(DFWORD(df, 0)&0x7bfc0000)==0x6a380000) | |
| 395 #define DFISUINT01(df) ((DFWORD(df, 0)&0xfbfc0000)==0x22380000) | |
| 396 #define DFISCCZERO(df) (DFWORD(df, 1)==0 \ | |
| 397 && (DFWORD(df, 0)&0x0003ffff)==0) | |
| 398 #define DFISCC01(df) ((DFWORD(df, 0)&~0xfffc9124)==0 \ | |
| 399 && (DFWORD(df, 1)&~0x49124491)==0) | |
| 400 #elif DECPMAX==34 | |
| 401 #define ZEROWORD QUADZERO | |
| 402 #define DFISZERO(df) ((DFWORD(df, 3)==0 \ | |
| 403 && DFWORD(df, 2)==0 \ | |
| 404 && DFWORD(df, 1)==0 \ | |
| 405 && (DFWORD(df, 0)&0x1c003fff)==0 \ | |
| 406 && (DFWORD(df, 0)&0x60000000)!=0x60000000)) | |
| 407 #define DFISINT(df) ((DFWORD(df, 0)&0x63ffc000)==0x22080000 \ | |
| 408 ||(DFWORD(df, 0)&0x7bffc000)==0x6a080000) | |
| 409 #define DFISUINT01(df) ((DFWORD(df, 0)&0xfbffc000)==0x22080000) | |
| 410 #define DFISCCZERO(df) (DFWORD(df, 3)==0 \ | |
| 411 && DFWORD(df, 2)==0 \ | |
| 412 && DFWORD(df, 1)==0 \ | |
| 413 && (DFWORD(df, 0)&0x00003fff)==0) | |
| 414 | |
| 415 #define DFISCC01(df) ((DFWORD(df, 0)&~0xffffc912)==0 \ | |
| 416 && (DFWORD(df, 1)&~0x44912449)==0 \ | |
| 417 && (DFWORD(df, 2)&~0x12449124)==0 \ | |
| 418 && (DFWORD(df, 3)&~0x49124491)==0) | |
| 419 #endif | |
| 420 | |
| 421 /* Macros to test if a certain 10 bits of a uInt or pair of uInts */ | |
| 422 /* are a canonical declet [higher or lower bits are ignored]. */ | |
| 423 /* declet is at offset 0 (from the right) in a uInt: */ | |
| 424 #define CANONDPD(dpd) (((dpd)&0x300)==0 || ((dpd)&0x6e)!=0x6e) | |
| 425 /* declet is at offset k (a multiple of 2) in a uInt: */ | |
| 426 #define CANONDPDOFF(dpd, k) (((dpd)&(0x300<<(k)))==0 \ | |
| 427 || ((dpd)&(((uInt)0x6e)<<(k)))!=(((uInt)0x6e)<<(k))) | |
| 428 /* declet is at offset k (a multiple of 2) in a pair of uInts: */ | |
| 429 /* [the top 2 bits will always be in the more-significant uInt] */ | |
|
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430 #define CANONDPDTWO(hi, lo, k) (((hi)&(0x300>>(32-(k))))==0 \ |
| 0 | 431 || ((hi)&(0x6e>>(32-(k))))!=(0x6e>>(32-(k))) \ |
| 432 || ((lo)&(((uInt)0x6e)<<(k)))!=(((uInt)0x6e)<<(k))) | |
| 433 | |
| 434 /* Macro to test whether a full-length (length DECPMAX) BCD8 */ | |
|
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435 /* coefficient, starting at uByte u, is all zeros */ |
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436 /* Test just the LSWord first, then the remainder as a sequence */ |
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437 /* of tests in order to avoid same-level use of UBTOUI */ |
| 0 | 438 #if DECPMAX==7 |
|
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439 #define ISCOEFFZERO(u) ( \ |
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440 UBTOUI((u)+DECPMAX-4)==0 \ |
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441 && UBTOUS((u)+DECPMAX-6)==0 \ |
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442 && *(u)==0) |
| 0 | 443 #elif DECPMAX==16 |
|
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444 #define ISCOEFFZERO(u) ( \ |
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445 UBTOUI((u)+DECPMAX-4)==0 \ |
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446 && UBTOUI((u)+DECPMAX-8)==0 \ |
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447 && UBTOUI((u)+DECPMAX-12)==0 \ |
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448 && UBTOUI(u)==0) |
| 0 | 449 #elif DECPMAX==34 |
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450 #define ISCOEFFZERO(u) ( \ |
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451 UBTOUI((u)+DECPMAX-4)==0 \ |
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452 && UBTOUI((u)+DECPMAX-8)==0 \ |
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453 && UBTOUI((u)+DECPMAX-12)==0 \ |
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454 && UBTOUI((u)+DECPMAX-16)==0 \ |
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455 && UBTOUI((u)+DECPMAX-20)==0 \ |
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456 && UBTOUI((u)+DECPMAX-24)==0 \ |
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457 && UBTOUI((u)+DECPMAX-28)==0 \ |
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458 && UBTOUI((u)+DECPMAX-32)==0 \ |
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459 && UBTOUS(u)==0) |
| 0 | 460 #endif |
| 461 | |
| 462 /* Macros and masks for the exponent continuation field and MSD */ | |
| 463 /* Get the exponent continuation from a decFloat *df as an Int */ | |
| 464 #define GETECON(df) ((Int)((DFWORD((df), 0)&0x03ffffff)>>(32-6-DECECONL))) | |
| 465 /* Ditto, from the next-wider format */ | |
| 466 #define GETWECON(df) ((Int)((DFWWORD((df), 0)&0x03ffffff)>>(32-6-DECWECONL))) | |
| 467 /* Get the biased exponent similarly */ | |
| 468 #define GETEXP(df) ((Int)(DECCOMBEXP[DFWORD((df), 0)>>26]+GETECON(df))) | |
| 469 /* Get the unbiased exponent similarly */ | |
| 470 #define GETEXPUN(df) ((Int)GETEXP(df)-DECBIAS) | |
| 471 /* Get the MSD similarly (as uInt) */ | |
| 472 #define GETMSD(df) (DECCOMBMSD[DFWORD((df), 0)>>26]) | |
| 473 | |
| 474 /* Compile-time computes of the exponent continuation field masks */ | |
| 475 /* full exponent continuation field: */ | |
| 476 #define ECONMASK ((0x03ffffff>>(32-6-DECECONL))<<(32-6-DECECONL)) | |
| 477 /* same, not including its first digit (the qNaN/sNaN selector): */ | |
| 478 #define ECONNANMASK ((0x01ffffff>>(32-6-DECECONL))<<(32-6-DECECONL)) | |
| 479 | |
| 480 /* Macros to decode the coefficient in a finite decFloat *df into */ | |
|
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481 /* a BCD string (uByte *bcdin) of length DECPMAX uBytes. */ |
| 0 | 482 |
|
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483 /* In-line sequence to convert least significant 10 bits of uInt */ |
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484 /* dpd to three BCD8 digits starting at uByte u. Note that an */ |
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485 /* extra byte is written to the right of the three digits because */ |
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486 /* four bytes are moved at a time for speed; the alternative */ |
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487 /* macro moves exactly three bytes (usually slower). */ |
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488 #define dpd2bcd8(u, dpd) memcpy(u, &DPD2BCD8[((dpd)&0x3ff)*4], 4) |
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489 #define dpd2bcd83(u, dpd) memcpy(u, &DPD2BCD8[((dpd)&0x3ff)*4], 3) |
| 0 | 490 |
| 491 /* Decode the declets. After extracting each one, it is decoded */ | |
| 492 /* to BCD8 using a table lookup (also used for variable-length */ | |
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493 /* decode). Each DPD decode is 3 bytes BCD8 plus a one-byte */ |
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494 /* length which is not used, here). Fixed-length 4-byte moves */ |
| 0 | 495 /* are fast, however, almost everywhere, and so are used except */ |
| 496 /* for the final three bytes (to avoid overrun). The code below */ | |
| 497 /* is 36 instructions for Doubles and about 70 for Quads, even */ | |
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498 /* on IA32. */ |
| 0 | 499 |
| 500 /* Two macros are defined for each format: */ | |
| 501 /* GETCOEFF extracts the coefficient of the current format */ | |
| 502 /* GETWCOEFF extracts the coefficient of the next-wider format. */ | |
| 503 /* The latter is a copy of the next-wider GETCOEFF using DFWWORD. */ | |
| 504 | |
| 505 #if DECPMAX==7 | |
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506 #define GETCOEFF(df, bcd) { \ |
| 0 | 507 uInt sourhi=DFWORD(df, 0); \ |
| 508 *(bcd)=(uByte)DECCOMBMSD[sourhi>>26]; \ | |
| 509 dpd2bcd8(bcd+1, sourhi>>10); \ | |
| 510 dpd2bcd83(bcd+4, sourhi);} | |
| 511 #define GETWCOEFF(df, bcd) { \ | |
| 512 uInt sourhi=DFWWORD(df, 0); \ | |
| 513 uInt sourlo=DFWWORD(df, 1); \ | |
| 514 *(bcd)=(uByte)DECCOMBMSD[sourhi>>26]; \ | |
| 515 dpd2bcd8(bcd+1, sourhi>>8); \ | |
| 516 dpd2bcd8(bcd+4, (sourhi<<2) | (sourlo>>30)); \ | |
| 517 dpd2bcd8(bcd+7, sourlo>>20); \ | |
| 518 dpd2bcd8(bcd+10, sourlo>>10); \ | |
| 519 dpd2bcd83(bcd+13, sourlo);} | |
| 520 | |
| 521 #elif DECPMAX==16 | |
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522 #define GETCOEFF(df, bcd) { \ |
| 0 | 523 uInt sourhi=DFWORD(df, 0); \ |
| 524 uInt sourlo=DFWORD(df, 1); \ | |
| 525 *(bcd)=(uByte)DECCOMBMSD[sourhi>>26]; \ | |
| 526 dpd2bcd8(bcd+1, sourhi>>8); \ | |
| 527 dpd2bcd8(bcd+4, (sourhi<<2) | (sourlo>>30)); \ | |
| 528 dpd2bcd8(bcd+7, sourlo>>20); \ | |
| 529 dpd2bcd8(bcd+10, sourlo>>10); \ | |
| 530 dpd2bcd83(bcd+13, sourlo);} | |
| 531 #define GETWCOEFF(df, bcd) { \ | |
| 532 uInt sourhi=DFWWORD(df, 0); \ | |
| 533 uInt sourmh=DFWWORD(df, 1); \ | |
| 534 uInt sourml=DFWWORD(df, 2); \ | |
| 535 uInt sourlo=DFWWORD(df, 3); \ | |
| 536 *(bcd)=(uByte)DECCOMBMSD[sourhi>>26]; \ | |
| 537 dpd2bcd8(bcd+1, sourhi>>4); \ | |
| 538 dpd2bcd8(bcd+4, ((sourhi)<<6) | (sourmh>>26)); \ | |
| 539 dpd2bcd8(bcd+7, sourmh>>16); \ | |
| 540 dpd2bcd8(bcd+10, sourmh>>6); \ | |
| 541 dpd2bcd8(bcd+13, ((sourmh)<<4) | (sourml>>28)); \ | |
| 542 dpd2bcd8(bcd+16, sourml>>18); \ | |
| 543 dpd2bcd8(bcd+19, sourml>>8); \ | |
| 544 dpd2bcd8(bcd+22, ((sourml)<<2) | (sourlo>>30)); \ | |
| 545 dpd2bcd8(bcd+25, sourlo>>20); \ | |
| 546 dpd2bcd8(bcd+28, sourlo>>10); \ | |
| 547 dpd2bcd83(bcd+31, sourlo);} | |
| 548 | |
| 549 #elif DECPMAX==34 | |
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550 #define GETCOEFF(df, bcd) { \ |
| 0 | 551 uInt sourhi=DFWORD(df, 0); \ |
| 552 uInt sourmh=DFWORD(df, 1); \ | |
| 553 uInt sourml=DFWORD(df, 2); \ | |
| 554 uInt sourlo=DFWORD(df, 3); \ | |
| 555 *(bcd)=(uByte)DECCOMBMSD[sourhi>>26]; \ | |
| 556 dpd2bcd8(bcd+1, sourhi>>4); \ | |
| 557 dpd2bcd8(bcd+4, ((sourhi)<<6) | (sourmh>>26)); \ | |
| 558 dpd2bcd8(bcd+7, sourmh>>16); \ | |
| 559 dpd2bcd8(bcd+10, sourmh>>6); \ | |
| 560 dpd2bcd8(bcd+13, ((sourmh)<<4) | (sourml>>28)); \ | |
| 561 dpd2bcd8(bcd+16, sourml>>18); \ | |
| 562 dpd2bcd8(bcd+19, sourml>>8); \ | |
| 563 dpd2bcd8(bcd+22, ((sourml)<<2) | (sourlo>>30)); \ | |
| 564 dpd2bcd8(bcd+25, sourlo>>20); \ | |
| 565 dpd2bcd8(bcd+28, sourlo>>10); \ | |
| 566 dpd2bcd83(bcd+31, sourlo);} | |
| 567 | |
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568 #define GETWCOEFF(df, bcd) {??} /* [should never be used] */ |
| 0 | 569 #endif |
| 570 | |
| 571 /* Macros to decode the coefficient in a finite decFloat *df into */ | |
| 572 /* a base-billion uInt array, with the least-significant */ | |
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573 /* 0-999999999 'digit' at offset 0. */ |
| 0 | 574 |
| 575 /* Decode the declets. After extracting each one, it is decoded */ | |
| 576 /* to binary using a table lookup. Three tables are used; one */ | |
| 577 /* the usual DPD to binary, the other two pre-multiplied by 1000 */ | |
| 578 /* and 1000000 to avoid multiplication during decode. These */ | |
| 579 /* tables can also be used for multiplying up the MSD as the DPD */ | |
| 580 /* code for 0 through 9 is the identity. */ | |
| 581 #define DPD2BIN0 DPD2BIN /* for prettier code */ | |
| 582 | |
| 583 #if DECPMAX==7 | |
| 584 #define GETCOEFFBILL(df, buf) { \ | |
| 585 uInt sourhi=DFWORD(df, 0); \ | |
| 586 (buf)[0]=DPD2BIN0[sourhi&0x3ff] \ | |
| 587 +DPD2BINK[(sourhi>>10)&0x3ff] \ | |
| 588 +DPD2BINM[DECCOMBMSD[sourhi>>26]];} | |
| 589 | |
| 590 #elif DECPMAX==16 | |
| 591 #define GETCOEFFBILL(df, buf) { \ | |
| 592 uInt sourhi, sourlo; \ | |
| 593 sourlo=DFWORD(df, 1); \ | |
| 594 (buf)[0]=DPD2BIN0[sourlo&0x3ff] \ | |
| 595 +DPD2BINK[(sourlo>>10)&0x3ff] \ | |
| 596 +DPD2BINM[(sourlo>>20)&0x3ff]; \ | |
| 597 sourhi=DFWORD(df, 0); \ | |
| 598 (buf)[1]=DPD2BIN0[((sourhi<<2) | (sourlo>>30))&0x3ff] \ | |
| 599 +DPD2BINK[(sourhi>>8)&0x3ff] \ | |
| 600 +DPD2BINM[DECCOMBMSD[sourhi>>26]];} | |
| 601 | |
| 602 #elif DECPMAX==34 | |
| 603 #define GETCOEFFBILL(df, buf) { \ | |
| 604 uInt sourhi, sourmh, sourml, sourlo; \ | |
| 605 sourlo=DFWORD(df, 3); \ | |
| 606 (buf)[0]=DPD2BIN0[sourlo&0x3ff] \ | |
| 607 +DPD2BINK[(sourlo>>10)&0x3ff] \ | |
| 608 +DPD2BINM[(sourlo>>20)&0x3ff]; \ | |
| 609 sourml=DFWORD(df, 2); \ | |
| 610 (buf)[1]=DPD2BIN0[((sourml<<2) | (sourlo>>30))&0x3ff] \ | |
| 611 +DPD2BINK[(sourml>>8)&0x3ff] \ | |
| 612 +DPD2BINM[(sourml>>18)&0x3ff]; \ | |
| 613 sourmh=DFWORD(df, 1); \ | |
| 614 (buf)[2]=DPD2BIN0[((sourmh<<4) | (sourml>>28))&0x3ff] \ | |
| 615 +DPD2BINK[(sourmh>>6)&0x3ff] \ | |
| 616 +DPD2BINM[(sourmh>>16)&0x3ff]; \ | |
| 617 sourhi=DFWORD(df, 0); \ | |
| 618 (buf)[3]=DPD2BIN0[((sourhi<<6) | (sourmh>>26))&0x3ff] \ | |
| 619 +DPD2BINK[(sourhi>>4)&0x3ff] \ | |
| 620 +DPD2BINM[DECCOMBMSD[sourhi>>26]];} | |
| 621 | |
| 622 #endif | |
| 623 | |
| 624 /* Macros to decode the coefficient in a finite decFloat *df into */ | |
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625 /* a base-thousand uInt array (of size DECLETS+1, to allow for */ |
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626 /* the MSD), with the least-significant 0-999 'digit' at offset 0.*/ |
| 0 | 627 |
| 628 /* Decode the declets. After extracting each one, it is decoded */ | |
| 629 /* to binary using a table lookup. */ | |
| 630 #if DECPMAX==7 | |
| 631 #define GETCOEFFTHOU(df, buf) { \ | |
| 632 uInt sourhi=DFWORD(df, 0); \ | |
| 633 (buf)[0]=DPD2BIN[sourhi&0x3ff]; \ | |
| 634 (buf)[1]=DPD2BIN[(sourhi>>10)&0x3ff]; \ | |
| 635 (buf)[2]=DECCOMBMSD[sourhi>>26];} | |
| 636 | |
| 637 #elif DECPMAX==16 | |
| 638 #define GETCOEFFTHOU(df, buf) { \ | |
| 639 uInt sourhi, sourlo; \ | |
| 640 sourlo=DFWORD(df, 1); \ | |
| 641 (buf)[0]=DPD2BIN[sourlo&0x3ff]; \ | |
| 642 (buf)[1]=DPD2BIN[(sourlo>>10)&0x3ff]; \ | |
| 643 (buf)[2]=DPD2BIN[(sourlo>>20)&0x3ff]; \ | |
| 644 sourhi=DFWORD(df, 0); \ | |
| 645 (buf)[3]=DPD2BIN[((sourhi<<2) | (sourlo>>30))&0x3ff]; \ | |
| 646 (buf)[4]=DPD2BIN[(sourhi>>8)&0x3ff]; \ | |
| 647 (buf)[5]=DECCOMBMSD[sourhi>>26];} | |
| 648 | |
| 649 #elif DECPMAX==34 | |
| 650 #define GETCOEFFTHOU(df, buf) { \ | |
| 651 uInt sourhi, sourmh, sourml, sourlo; \ | |
| 652 sourlo=DFWORD(df, 3); \ | |
| 653 (buf)[0]=DPD2BIN[sourlo&0x3ff]; \ | |
| 654 (buf)[1]=DPD2BIN[(sourlo>>10)&0x3ff]; \ | |
| 655 (buf)[2]=DPD2BIN[(sourlo>>20)&0x3ff]; \ | |
| 656 sourml=DFWORD(df, 2); \ | |
| 657 (buf)[3]=DPD2BIN[((sourml<<2) | (sourlo>>30))&0x3ff]; \ | |
| 658 (buf)[4]=DPD2BIN[(sourml>>8)&0x3ff]; \ | |
| 659 (buf)[5]=DPD2BIN[(sourml>>18)&0x3ff]; \ | |
| 660 sourmh=DFWORD(df, 1); \ | |
| 661 (buf)[6]=DPD2BIN[((sourmh<<4) | (sourml>>28))&0x3ff]; \ | |
| 662 (buf)[7]=DPD2BIN[(sourmh>>6)&0x3ff]; \ | |
| 663 (buf)[8]=DPD2BIN[(sourmh>>16)&0x3ff]; \ | |
| 664 sourhi=DFWORD(df, 0); \ | |
| 665 (buf)[9]=DPD2BIN[((sourhi<<6) | (sourmh>>26))&0x3ff]; \ | |
| 666 (buf)[10]=DPD2BIN[(sourhi>>4)&0x3ff]; \ | |
| 667 (buf)[11]=DECCOMBMSD[sourhi>>26];} | |
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668 #endif |
| 0 | 669 |
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670 |
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671 /* Macros to decode the coefficient in a finite decFloat *df and */ |
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672 /* add to a base-thousand uInt array (as for GETCOEFFTHOU). */ |
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673 /* After the addition then most significant 'digit' in the array */ |
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674 /* might have a value larger then 10 (with a maximum of 19). */ |
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675 #if DECPMAX==7 |
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676 #define ADDCOEFFTHOU(df, buf) { \ |
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677 uInt sourhi=DFWORD(df, 0); \ |
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678 (buf)[0]+=DPD2BIN[sourhi&0x3ff]; \ |
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679 if (buf[0]>999) {buf[0]-=1000; buf[1]++;} \ |
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680 (buf)[1]+=DPD2BIN[(sourhi>>10)&0x3ff]; \ |
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681 if (buf[1]>999) {buf[1]-=1000; buf[2]++;} \ |
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682 (buf)[2]+=DECCOMBMSD[sourhi>>26];} |
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683 |
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684 #elif DECPMAX==16 |
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685 #define ADDCOEFFTHOU(df, buf) { \ |
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686 uInt sourhi, sourlo; \ |
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687 sourlo=DFWORD(df, 1); \ |
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688 (buf)[0]+=DPD2BIN[sourlo&0x3ff]; \ |
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689 if (buf[0]>999) {buf[0]-=1000; buf[1]++;} \ |
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690 (buf)[1]+=DPD2BIN[(sourlo>>10)&0x3ff]; \ |
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691 if (buf[1]>999) {buf[1]-=1000; buf[2]++;} \ |
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692 (buf)[2]+=DPD2BIN[(sourlo>>20)&0x3ff]; \ |
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693 if (buf[2]>999) {buf[2]-=1000; buf[3]++;} \ |
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694 sourhi=DFWORD(df, 0); \ |
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695 (buf)[3]+=DPD2BIN[((sourhi<<2) | (sourlo>>30))&0x3ff]; \ |
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696 if (buf[3]>999) {buf[3]-=1000; buf[4]++;} \ |
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697 (buf)[4]+=DPD2BIN[(sourhi>>8)&0x3ff]; \ |
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698 if (buf[4]>999) {buf[4]-=1000; buf[5]++;} \ |
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699 (buf)[5]+=DECCOMBMSD[sourhi>>26];} |
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700 |
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701 #elif DECPMAX==34 |
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702 #define ADDCOEFFTHOU(df, buf) { \ |
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703 uInt sourhi, sourmh, sourml, sourlo; \ |
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704 sourlo=DFWORD(df, 3); \ |
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705 (buf)[0]+=DPD2BIN[sourlo&0x3ff]; \ |
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706 if (buf[0]>999) {buf[0]-=1000; buf[1]++;} \ |
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707 (buf)[1]+=DPD2BIN[(sourlo>>10)&0x3ff]; \ |
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708 if (buf[1]>999) {buf[1]-=1000; buf[2]++;} \ |
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709 (buf)[2]+=DPD2BIN[(sourlo>>20)&0x3ff]; \ |
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710 if (buf[2]>999) {buf[2]-=1000; buf[3]++;} \ |
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711 sourml=DFWORD(df, 2); \ |
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712 (buf)[3]+=DPD2BIN[((sourml<<2) | (sourlo>>30))&0x3ff]; \ |
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713 if (buf[3]>999) {buf[3]-=1000; buf[4]++;} \ |
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714 (buf)[4]+=DPD2BIN[(sourml>>8)&0x3ff]; \ |
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715 if (buf[4]>999) {buf[4]-=1000; buf[5]++;} \ |
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716 (buf)[5]+=DPD2BIN[(sourml>>18)&0x3ff]; \ |
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717 if (buf[5]>999) {buf[5]-=1000; buf[6]++;} \ |
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718 sourmh=DFWORD(df, 1); \ |
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719 (buf)[6]+=DPD2BIN[((sourmh<<4) | (sourml>>28))&0x3ff]; \ |
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720 if (buf[6]>999) {buf[6]-=1000; buf[7]++;} \ |
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721 (buf)[7]+=DPD2BIN[(sourmh>>6)&0x3ff]; \ |
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722 if (buf[7]>999) {buf[7]-=1000; buf[8]++;} \ |
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723 (buf)[8]+=DPD2BIN[(sourmh>>16)&0x3ff]; \ |
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724 if (buf[8]>999) {buf[8]-=1000; buf[9]++;} \ |
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725 sourhi=DFWORD(df, 0); \ |
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726 (buf)[9]+=DPD2BIN[((sourhi<<6) | (sourmh>>26))&0x3ff]; \ |
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727 if (buf[9]>999) {buf[9]-=1000; buf[10]++;} \ |
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728 (buf)[10]+=DPD2BIN[(sourhi>>4)&0x3ff]; \ |
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729 if (buf[10]>999) {buf[10]-=1000; buf[11]++;} \ |
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730 (buf)[11]+=DECCOMBMSD[sourhi>>26];} |
| 0 | 731 #endif |
| 732 | |
|
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733 |
| 0 | 734 /* Set a decFloat to the maximum positive finite number (Nmax) */ |
| 735 #if DECPMAX==7 | |
| 736 #define DFSETNMAX(df) \ | |
| 737 {DFWORD(df, 0)=0x77f3fcff;} | |
| 738 #elif DECPMAX==16 | |
| 739 #define DFSETNMAX(df) \ | |
| 740 {DFWORD(df, 0)=0x77fcff3f; \ | |
| 741 DFWORD(df, 1)=0xcff3fcff;} | |
| 742 #elif DECPMAX==34 | |
| 743 #define DFSETNMAX(df) \ | |
| 744 {DFWORD(df, 0)=0x77ffcff3; \ | |
| 745 DFWORD(df, 1)=0xfcff3fcf; \ | |
| 746 DFWORD(df, 2)=0xf3fcff3f; \ | |
| 747 DFWORD(df, 3)=0xcff3fcff;} | |
| 748 #endif | |
| 749 | |
| 750 /* [end of format-dependent macros and constants] */ | |
| 751 #endif | |
| 752 | |
| 753 #else | |
| 754 #error decNumberLocal included more than once | |
| 755 #endif |