| 1 |
DOUBLE PRECISION FUNCTION D1MACH(I) |
| 2 |
C |
| 3 |
C DOUBLE-PRECISION MACHINE CONSTANTS |
| 4 |
C |
| 5 |
C D1MACH( 1) = B**(EMIN-1), THE SMALLEST POSITIVE MAGNITUDE. |
| 6 |
C |
| 7 |
C D1MACH( 2) = B**EMAX*(1 - B**(-T)), THE LARGEST MAGNITUDE. |
| 8 |
C |
| 9 |
C D1MACH( 3) = B**(-T), THE SMALLEST RELATIVE SPACING. |
| 10 |
C |
| 11 |
C D1MACH( 4) = B**(1-T), THE LARGEST RELATIVE SPACING. |
| 12 |
C |
| 13 |
C D1MACH( 5) = LOG10(B) |
| 14 |
C |
| 15 |
C TO ALTER THIS FUNCTION FOR A PARTICULAR ENVIRONMENT, |
| 16 |
C THE DESIRED SET OF DATA STATEMENTS SHOULD BE ACTIVATED BY |
| 17 |
C REMOVING THE C FROM COLUMN 1. |
| 18 |
C ON RARE MACHINES A STATIC STATEMENT MAY NEED TO BE ADDED. |
| 19 |
C (BUT PROBABLY MORE SYSTEMS PROHIBIT IT THAN REQUIRE IT.) |
| 20 |
C |
| 21 |
C FOR IEEE-ARITHMETIC MACHINES (BINARY STANDARD), ONE OF THE FIRST |
| 22 |
C TWO SETS OF CONSTANTS BELOW SHOULD BE APPROPRIATE. IF YOU DO NOT |
| 23 |
C KNOW WHICH SET TO USE, TRY BOTH AND SEE WHICH GIVES PLAUSIBLE |
| 24 |
C VALUES. |
| 25 |
C |
| 26 |
C WHERE POSSIBLE, DECIMAL, OCTAL OR HEXADECIMAL CONSTANTS ARE USED |
| 27 |
C TO SPECIFY THE CONSTANTS EXACTLY. SOMETIMES THIS REQUIRES USING |
| 28 |
C EQUIVALENT INTEGER ARRAYS. IF YOUR COMPILER USES HALF-WORD |
| 29 |
C INTEGERS BY DEFAULT (SOMETIMES CALLED INTEGER*2), YOU MAY NEED TO |
| 30 |
C CHANGE INTEGER TO INTEGER*4 OR OTHERWISE INSTRUCT YOUR COMPILER |
| 31 |
C TO USE FULL-WORD INTEGERS IN THE NEXT 5 DECLARATIONS. |
| 32 |
C |
| 33 |
C COMMENTS JUST BEFORE THE END STATEMENT (LINES STARTING WITH *) |
| 34 |
C GIVE C SOURCE FOR D1MACH. |
| 35 |
C |
| 36 |
INTEGER SMALL(2) |
| 37 |
INTEGER LARGE(2) |
| 38 |
INTEGER RIGHT(2) |
| 39 |
INTEGER DIVER(2) |
| 40 |
INTEGER LOG10(2) |
| 41 |
INTEGER SC |
| 42 |
C |
| 43 |
DOUBLE PRECISION DMACH(5) |
| 44 |
C |
| 45 |
EQUIVALENCE (DMACH(1),SMALL(1)) |
| 46 |
EQUIVALENCE (DMACH(2),LARGE(1)) |
| 47 |
EQUIVALENCE (DMACH(3),RIGHT(1)) |
| 48 |
EQUIVALENCE (DMACH(4),DIVER(1)) |
| 49 |
EQUIVALENCE (DMACH(5),LOG10(1)) |
| 50 |
C |
| 51 |
C MACHINE CONSTANTS FOR BIG-ENDIAN IEEE ARITHMETIC (BINARY FORMAT) |
| 52 |
C MACHINES IN WHICH THE MOST SIGNIFICANT BYTE IS STORED FIRST, |
| 53 |
C SUCH AS THE AT&T 3B SERIES, MOTOROLA 68000 BASED MACHINES (E.G. |
| 54 |
C SUN 3), AND MACHINES THAT USE SPARC, HP, OR IBM RISC CHIPS. |
| 55 |
C |
| 56 |
c DATA SMALL(1),SMALL(2) / 1048576, 0 / |
| 57 |
c DATA LARGE(1),LARGE(2) / 2146435071, -1 / |
| 58 |
c DATA RIGHT(1),RIGHT(2) / 1017118720, 0 / |
| 59 |
c DATA DIVER(1),DIVER(2) / 1018167296, 0 / |
| 60 |
c DATA LOG10(1),LOG10(2) / 1070810131, 1352628735 /, SC/987/ |
| 61 |
C |
| 62 |
C MACHINE CONSTANTS FOR LITTLE-ENDIAN (BINARY) IEEE ARITHMETIC |
| 63 |
C MACHINES IN WHICH THE LEAST SIGNIFICANT BYTE IS STORED FIRST, |
| 64 |
C E.G. IBM PCS AND OTHER MACHINES THAT USE INTEL 80X87 OR DEC |
| 65 |
C ALPHA CHIPS. |
| 66 |
C |
| 67 |
DATA SMALL(1),SMALL(2) / 0, 1048576 / |
| 68 |
DATA LARGE(1),LARGE(2) / -1, 2146435071 / |
| 69 |
DATA RIGHT(1),RIGHT(2) / 0, 1017118720 / |
| 70 |
DATA DIVER(1),DIVER(2) / 0, 1018167296 / |
| 71 |
DATA LOG10(1),LOG10(2) / 1352628735, 1070810131 /, SC/987/ |
| 72 |
C |
| 73 |
C MACHINE CONSTANTS FOR AMDAHL MACHINES. |
| 74 |
C |
| 75 |
C DATA SMALL(1),SMALL(2) / 1048576, 0 / |
| 76 |
C DATA LARGE(1),LARGE(2) / 2147483647, -1 / |
| 77 |
C DATA RIGHT(1),RIGHT(2) / 856686592, 0 / |
| 78 |
C DATA DIVER(1),DIVER(2) / 873463808, 0 / |
| 79 |
C DATA LOG10(1),LOG10(2) / 1091781651, 1352628735 /, SC/987/ |
| 80 |
C |
| 81 |
C MACHINE CONSTANTS FOR THE BURROUGHS 1700 SYSTEM. |
| 82 |
C |
| 83 |
C DATA SMALL(1) / ZC00800000 / |
| 84 |
C DATA SMALL(2) / Z000000000 / |
| 85 |
C |
| 86 |
C DATA LARGE(1) / ZDFFFFFFFF / |
| 87 |
C DATA LARGE(2) / ZFFFFFFFFF / |
| 88 |
C |
| 89 |
C DATA RIGHT(1) / ZCC5800000 / |
| 90 |
C DATA RIGHT(2) / Z000000000 / |
| 91 |
C |
| 92 |
C DATA DIVER(1) / ZCC6800000 / |
| 93 |
C DATA DIVER(2) / Z000000000 / |
| 94 |
C |
| 95 |
C DATA LOG10(1) / ZD00E730E7 / |
| 96 |
C DATA LOG10(2) / ZC77800DC0 /, SC/987/ |
| 97 |
C |
| 98 |
C MACHINE CONSTANTS FOR THE BURROUGHS 5700 SYSTEM. |
| 99 |
C |
| 100 |
C DATA SMALL(1) / O1771000000000000 / |
| 101 |
C DATA SMALL(2) / O0000000000000000 / |
| 102 |
C |
| 103 |
C DATA LARGE(1) / O0777777777777777 / |
| 104 |
C DATA LARGE(2) / O0007777777777777 / |
| 105 |
C |
| 106 |
C DATA RIGHT(1) / O1461000000000000 / |
| 107 |
C DATA RIGHT(2) / O0000000000000000 / |
| 108 |
C |
| 109 |
C DATA DIVER(1) / O1451000000000000 / |
| 110 |
C DATA DIVER(2) / O0000000000000000 / |
| 111 |
C |
| 112 |
C DATA LOG10(1) / O1157163034761674 / |
| 113 |
C DATA LOG10(2) / O0006677466732724 /, SC/987/ |
| 114 |
C |
| 115 |
C MACHINE CONSTANTS FOR THE BURROUGHS 6700/7700 SYSTEMS. |
| 116 |
C |
| 117 |
C DATA SMALL(1) / O1771000000000000 / |
| 118 |
C DATA SMALL(2) / O7770000000000000 / |
| 119 |
C |
| 120 |
C DATA LARGE(1) / O0777777777777777 / |
| 121 |
C DATA LARGE(2) / O7777777777777777 / |
| 122 |
C |
| 123 |
C DATA RIGHT(1) / O1461000000000000 / |
| 124 |
C DATA RIGHT(2) / O0000000000000000 / |
| 125 |
C |
| 126 |
C DATA DIVER(1) / O1451000000000000 / |
| 127 |
C DATA DIVER(2) / O0000000000000000 / |
| 128 |
C |
| 129 |
C DATA LOG10(1) / O1157163034761674 / |
| 130 |
C DATA LOG10(2) / O0006677466732724 /, SC/987/ |
| 131 |
C |
| 132 |
C MACHINE CONSTANTS FOR FTN4 ON THE CDC 6000/7000 SERIES. |
| 133 |
C |
| 134 |
C DATA SMALL(1) / 00564000000000000000B / |
| 135 |
C DATA SMALL(2) / 00000000000000000000B / |
| 136 |
C |
| 137 |
C DATA LARGE(1) / 37757777777777777777B / |
| 138 |
C DATA LARGE(2) / 37157777777777777774B / |
| 139 |
C |
| 140 |
C DATA RIGHT(1) / 15624000000000000000B / |
| 141 |
C DATA RIGHT(2) / 00000000000000000000B / |
| 142 |
C |
| 143 |
C DATA DIVER(1) / 15634000000000000000B / |
| 144 |
C DATA DIVER(2) / 00000000000000000000B / |
| 145 |
C |
| 146 |
C DATA LOG10(1) / 17164642023241175717B / |
| 147 |
C DATA LOG10(2) / 16367571421742254654B /, SC/987/ |
| 148 |
C |
| 149 |
C MACHINE CONSTANTS FOR FTN5 ON THE CDC 6000/7000 SERIES. |
| 150 |
C |
| 151 |
C DATA SMALL(1) / O"00564000000000000000" / |
| 152 |
C DATA SMALL(2) / O"00000000000000000000" / |
| 153 |
C |
| 154 |
C DATA LARGE(1) / O"37757777777777777777" / |
| 155 |
C DATA LARGE(2) / O"37157777777777777774" / |
| 156 |
C |
| 157 |
C DATA RIGHT(1) / O"15624000000000000000" / |
| 158 |
C DATA RIGHT(2) / O"00000000000000000000" / |
| 159 |
C |
| 160 |
C DATA DIVER(1) / O"15634000000000000000" / |
| 161 |
C DATA DIVER(2) / O"00000000000000000000" / |
| 162 |
C |
| 163 |
C DATA LOG10(1) / O"17164642023241175717" / |
| 164 |
C DATA LOG10(2) / O"16367571421742254654" /, SC/987/ |
| 165 |
C |
| 166 |
C MACHINE CONSTANTS FOR CONVEX C-1 |
| 167 |
C |
| 168 |
C DATA SMALL(1),SMALL(2) / '00100000'X, '00000000'X / |
| 169 |
C DATA LARGE(1),LARGE(2) / '7FFFFFFF'X, 'FFFFFFFF'X / |
| 170 |
C DATA RIGHT(1),RIGHT(2) / '3CC00000'X, '00000000'X / |
| 171 |
C DATA DIVER(1),DIVER(2) / '3CD00000'X, '00000000'X / |
| 172 |
C DATA LOG10(1),LOG10(2) / '3FF34413'X, '509F79FF'X /, SC/987/ |
| 173 |
C |
| 174 |
C MACHINE CONSTANTS FOR THE CRAY 1, XMP, 2, AND 3. |
| 175 |
C |
| 176 |
C DATA SMALL(1) / 201354000000000000000B / |
| 177 |
C DATA SMALL(2) / 000000000000000000000B / |
| 178 |
C |
| 179 |
C DATA LARGE(1) / 577767777777777777777B / |
| 180 |
C DATA LARGE(2) / 000007777777777777776B / |
| 181 |
C |
| 182 |
C DATA RIGHT(1) / 376434000000000000000B / |
| 183 |
C DATA RIGHT(2) / 000000000000000000000B / |
| 184 |
C |
| 185 |
C DATA DIVER(1) / 376444000000000000000B / |
| 186 |
C DATA DIVER(2) / 000000000000000000000B / |
| 187 |
C |
| 188 |
C DATA LOG10(1) / 377774642023241175717B / |
| 189 |
C DATA LOG10(2) / 000007571421742254654B /, SC/987/ |
| 190 |
C |
| 191 |
C MACHINE CONSTANTS FOR THE DATA GENERAL ECLIPSE S/200 |
| 192 |
C |
| 193 |
C SMALL, LARGE, RIGHT, DIVER, LOG10 SHOULD BE DECLARED |
| 194 |
C INTEGER SMALL(4), LARGE(4), RIGHT(4), DIVER(4), LOG10(4) |
| 195 |
C |
| 196 |
C NOTE - IT MAY BE APPROPRIATE TO INCLUDE THE FOLLOWING LINE - |
| 197 |
C STATIC DMACH(5) |
| 198 |
C |
| 199 |
C DATA SMALL/20K,3*0/,LARGE/77777K,3*177777K/ |
| 200 |
C DATA RIGHT/31420K,3*0/,DIVER/32020K,3*0/ |
| 201 |
C DATA LOG10/40423K,42023K,50237K,74776K/, SC/987/ |
| 202 |
C |
| 203 |
C MACHINE CONSTANTS FOR THE HARRIS SLASH 6 AND SLASH 7 |
| 204 |
C |
| 205 |
C DATA SMALL(1),SMALL(2) / '20000000, '00000201 / |
| 206 |
C DATA LARGE(1),LARGE(2) / '37777777, '37777577 / |
| 207 |
C DATA RIGHT(1),RIGHT(2) / '20000000, '00000333 / |
| 208 |
C DATA DIVER(1),DIVER(2) / '20000000, '00000334 / |
| 209 |
C DATA LOG10(1),LOG10(2) / '23210115, '10237777 /, SC/987/ |
| 210 |
C |
| 211 |
C MACHINE CONSTANTS FOR THE HONEYWELL DPS 8/70 SERIES. |
| 212 |
C |
| 213 |
C DATA SMALL(1),SMALL(2) / O402400000000, O000000000000 / |
| 214 |
C DATA LARGE(1),LARGE(2) / O376777777777, O777777777777 / |
| 215 |
C DATA RIGHT(1),RIGHT(2) / O604400000000, O000000000000 / |
| 216 |
C DATA DIVER(1),DIVER(2) / O606400000000, O000000000000 / |
| 217 |
C DATA LOG10(1),LOG10(2) / O776464202324, O117571775714 /, SC/987/ |
| 218 |
C |
| 219 |
C MACHINE CONSTANTS FOR THE IBM 360/370 SERIES, |
| 220 |
C THE XEROX SIGMA 5/7/9 AND THE SEL SYSTEMS 85/86. |
| 221 |
C |
| 222 |
C DATA SMALL(1),SMALL(2) / Z00100000, Z00000000 / |
| 223 |
C DATA LARGE(1),LARGE(2) / Z7FFFFFFF, ZFFFFFFFF / |
| 224 |
C DATA RIGHT(1),RIGHT(2) / Z33100000, Z00000000 / |
| 225 |
C DATA DIVER(1),DIVER(2) / Z34100000, Z00000000 / |
| 226 |
C DATA LOG10(1),LOG10(2) / Z41134413, Z509F79FF /, SC/987/ |
| 227 |
C |
| 228 |
C MACHINE CONSTANTS FOR THE INTERDATA 8/32 |
| 229 |
C WITH THE UNIX SYSTEM FORTRAN 77 COMPILER. |
| 230 |
C |
| 231 |
C FOR THE INTERDATA FORTRAN VII COMPILER REPLACE |
| 232 |
C THE Z'S SPECIFYING HEX CONSTANTS WITH Y'S. |
| 233 |
C |
| 234 |
C DATA SMALL(1),SMALL(2) / Z'00100000', Z'00000000' / |
| 235 |
C DATA LARGE(1),LARGE(2) / Z'7EFFFFFF', Z'FFFFFFFF' / |
| 236 |
C DATA RIGHT(1),RIGHT(2) / Z'33100000', Z'00000000' / |
| 237 |
C DATA DIVER(1),DIVER(2) / Z'34100000', Z'00000000' / |
| 238 |
C DATA LOG10(1),LOG10(2) / Z'41134413', Z'509F79FF' /, SC/987/ |
| 239 |
C |
| 240 |
C MACHINE CONSTANTS FOR THE PDP-10 (KA PROCESSOR). |
| 241 |
C |
| 242 |
C DATA SMALL(1),SMALL(2) / "033400000000, "000000000000 / |
| 243 |
C DATA LARGE(1),LARGE(2) / "377777777777, "344777777777 / |
| 244 |
C DATA RIGHT(1),RIGHT(2) / "113400000000, "000000000000 / |
| 245 |
C DATA DIVER(1),DIVER(2) / "114400000000, "000000000000 / |
| 246 |
C DATA LOG10(1),LOG10(2) / "177464202324, "144117571776 /, SC/987/ |
| 247 |
C |
| 248 |
C MACHINE CONSTANTS FOR THE PDP-10 (KI PROCESSOR). |
| 249 |
C |
| 250 |
C DATA SMALL(1),SMALL(2) / "000400000000, "000000000000 / |
| 251 |
C DATA LARGE(1),LARGE(2) / "377777777777, "377777777777 / |
| 252 |
C DATA RIGHT(1),RIGHT(2) / "103400000000, "000000000000 / |
| 253 |
C DATA DIVER(1),DIVER(2) / "104400000000, "000000000000 / |
| 254 |
C DATA LOG10(1),LOG10(2) / "177464202324, "047674776746 /, SC/987/ |
| 255 |
C |
| 256 |
C MACHINE CONSTANTS FOR PDP-11 FORTRANS SUPPORTING |
| 257 |
C 32-BIT INTEGERS (EXPRESSED IN INTEGER AND OCTAL). |
| 258 |
C |
| 259 |
C DATA SMALL(1),SMALL(2) / 8388608, 0 / |
| 260 |
C DATA LARGE(1),LARGE(2) / 2147483647, -1 / |
| 261 |
C DATA RIGHT(1),RIGHT(2) / 612368384, 0 / |
| 262 |
C DATA DIVER(1),DIVER(2) / 620756992, 0 / |
| 263 |
C DATA LOG10(1),LOG10(2) / 1067065498, -2063872008 /, SC/987/ |
| 264 |
C |
| 265 |
C DATA SMALL(1),SMALL(2) / O00040000000, O00000000000 / |
| 266 |
C DATA LARGE(1),LARGE(2) / O17777777777, O37777777777 / |
| 267 |
C DATA RIGHT(1),RIGHT(2) / O04440000000, O00000000000 / |
| 268 |
C DATA DIVER(1),DIVER(2) / O04500000000, O00000000000 / |
| 269 |
C DATA LOG10(1),LOG10(2) / O07746420232, O20476747770 /, SC/987/ |
| 270 |
C |
| 271 |
C MACHINE CONSTANTS FOR PDP-11 FORTRANS SUPPORTING |
| 272 |
C 16-BIT INTEGERS (EXPRESSED IN INTEGER AND OCTAL). |
| 273 |
C |
| 274 |
C SMALL, LARGE, RIGHT, DIVER, LOG10 SHOULD BE DECLARED |
| 275 |
C INTEGER SMALL(4), LARGE(4), RIGHT(4), DIVER(4), LOG10(4) |
| 276 |
C |
| 277 |
C DATA SMALL(1),SMALL(2) / 128, 0 / |
| 278 |
C DATA SMALL(3),SMALL(4) / 0, 0 / |
| 279 |
C |
| 280 |
C DATA LARGE(1),LARGE(2) / 32767, -1 / |
| 281 |
C DATA LARGE(3),LARGE(4) / -1, -1 / |
| 282 |
C |
| 283 |
C DATA RIGHT(1),RIGHT(2) / 9344, 0 / |
| 284 |
C DATA RIGHT(3),RIGHT(4) / 0, 0 / |
| 285 |
C |
| 286 |
C DATA DIVER(1),DIVER(2) / 9472, 0 / |
| 287 |
C DATA DIVER(3),DIVER(4) / 0, 0 / |
| 288 |
C |
| 289 |
C DATA LOG10(1),LOG10(2) / 16282, 8346 / |
| 290 |
C DATA LOG10(3),LOG10(4) / -31493, -12296 /, SC/987/ |
| 291 |
C |
| 292 |
C DATA SMALL(1),SMALL(2) / O000200, O000000 / |
| 293 |
C DATA SMALL(3),SMALL(4) / O000000, O000000 / |
| 294 |
C |
| 295 |
C DATA LARGE(1),LARGE(2) / O077777, O177777 / |
| 296 |
C DATA LARGE(3),LARGE(4) / O177777, O177777 / |
| 297 |
C |
| 298 |
C DATA RIGHT(1),RIGHT(2) / O022200, O000000 / |
| 299 |
C DATA RIGHT(3),RIGHT(4) / O000000, O000000 / |
| 300 |
C |
| 301 |
C DATA DIVER(1),DIVER(2) / O022400, O000000 / |
| 302 |
C DATA DIVER(3),DIVER(4) / O000000, O000000 / |
| 303 |
C |
| 304 |
C DATA LOG10(1),LOG10(2) / O037632, O020232 / |
| 305 |
C DATA LOG10(3),LOG10(4) / O102373, O147770 /, SC/987/ |
| 306 |
C |
| 307 |
C MACHINE CONSTANTS FOR THE PRIME 50 SERIES SYSTEMS |
| 308 |
C WITH 32-BIT INTEGERS AND 64V MODE INSTRUCTIONS, |
| 309 |
C SUPPLIED BY IGOR BRAY. |
| 310 |
C |
| 311 |
C DATA SMALL(1),SMALL(2) / :10000000000, :00000100001 / |
| 312 |
C DATA LARGE(1),LARGE(2) / :17777777777, :37777677775 / |
| 313 |
C DATA RIGHT(1),RIGHT(2) / :10000000000, :00000000122 / |
| 314 |
C DATA DIVER(1),DIVER(2) / :10000000000, :00000000123 / |
| 315 |
C DATA LOG10(1),LOG10(2) / :11504046501, :07674600177 /, SC/987/ |
| 316 |
C |
| 317 |
C MACHINE CONSTANTS FOR THE SEQUENT BALANCE 8000 |
| 318 |
C |
| 319 |
C DATA SMALL(1),SMALL(2) / $00000000, $00100000 / |
| 320 |
C DATA LARGE(1),LARGE(2) / $FFFFFFFF, $7FEFFFFF / |
| 321 |
C DATA RIGHT(1),RIGHT(2) / $00000000, $3CA00000 / |
| 322 |
C DATA DIVER(1),DIVER(2) / $00000000, $3CB00000 / |
| 323 |
C DATA LOG10(1),LOG10(2) / $509F79FF, $3FD34413 /, SC/987/ |
| 324 |
C |
| 325 |
C MACHINE CONSTANTS FOR THE UNIVAC 1100 SERIES. |
| 326 |
C |
| 327 |
C DATA SMALL(1),SMALL(2) / O000040000000, O000000000000 / |
| 328 |
C DATA LARGE(1),LARGE(2) / O377777777777, O777777777777 / |
| 329 |
C DATA RIGHT(1),RIGHT(2) / O170540000000, O000000000000 / |
| 330 |
C DATA DIVER(1),DIVER(2) / O170640000000, O000000000000 / |
| 331 |
C DATA LOG10(1),LOG10(2) / O177746420232, O411757177572 /, SC/987/ |
| 332 |
C |
| 333 |
C MACHINE CONSTANTS FOR THE VAX UNIX F77 COMPILER |
| 334 |
C |
| 335 |
C DATA SMALL(1),SMALL(2) / 128, 0 / |
| 336 |
C DATA LARGE(1),LARGE(2) / -32769, -1 / |
| 337 |
C DATA RIGHT(1),RIGHT(2) / 9344, 0 / |
| 338 |
C DATA DIVER(1),DIVER(2) / 9472, 0 / |
| 339 |
C DATA LOG10(1),LOG10(2) / 546979738, -805796613 /, SC/987/ |
| 340 |
C |
| 341 |
C MACHINE CONSTANTS FOR THE VAX-11 WITH |
| 342 |
C FORTRAN IV-PLUS COMPILER |
| 343 |
C |
| 344 |
C DATA SMALL(1),SMALL(2) / Z00000080, Z00000000 / |
| 345 |
C DATA LARGE(1),LARGE(2) / ZFFFF7FFF, ZFFFFFFFF / |
| 346 |
C DATA RIGHT(1),RIGHT(2) / Z00002480, Z00000000 / |
| 347 |
C DATA DIVER(1),DIVER(2) / Z00002500, Z00000000 / |
| 348 |
C DATA LOG10(1),LOG10(2) / Z209A3F9A, ZCFF884FB /, SC/987/ |
| 349 |
C |
| 350 |
C MACHINE CONSTANTS FOR VAX/VMS VERSION 2.2 |
| 351 |
C |
| 352 |
C DATA SMALL(1),SMALL(2) / '80'X, '0'X / |
| 353 |
C DATA LARGE(1),LARGE(2) / 'FFFF7FFF'X, 'FFFFFFFF'X / |
| 354 |
C DATA RIGHT(1),RIGHT(2) / '2480'X, '0'X / |
| 355 |
C DATA DIVER(1),DIVER(2) / '2500'X, '0'X / |
| 356 |
C DATA LOG10(1),LOG10(2) / '209A3F9A'X, 'CFF884FB'X /, SC/987/ |
| 357 |
C |
| 358 |
C *** ISSUE STOP 779 IF ALL DATA STATEMENTS ARE COMMENTED... |
| 359 |
IF (SC .NE. 987) STOP 779 |
| 360 |
C *** ISSUE STOP 778 IF ALL DATA STATEMENTS ARE OBVIOUSLY WRONG... |
| 361 |
IF (DMACH(4) .GE. 1.0D0) STOP 778 |
| 362 |
IF (I .LT. 1 .OR. I .GT. 5) GOTO 999 |
| 363 |
D1MACH = DMACH(I) |
| 364 |
RETURN |
| 365 |
999 WRITE(*,1999) I |
| 366 |
1999 FORMAT(' D1MACH - I OUT OF BOUNDS',I10) |
| 367 |
STOP |
| 368 |
END |
Parent Directory
| 
Revision Log