Alexandre Lision | 7c6f4a6 | 2013-09-05 13:27:01 -0400 | [diff] [blame] | 1 | /* |
| 2 | ** Copyright (C) 1999-2011 Erik de Castro Lopo <erikd@mega-nerd.com> |
| 3 | ** |
| 4 | ** This program is free software; you can redistribute it and/or modify |
| 5 | ** it under the terms of the GNU Lesser General Public License as published by |
| 6 | ** the Free Software Foundation; either version 2.1 of the License, or |
| 7 | ** (at your option) any later version. |
| 8 | ** |
| 9 | ** This program is distributed in the hope that it will be useful, |
| 10 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | ** GNU Lesser General Public License for more details. |
| 13 | ** |
| 14 | ** You should have received a copy of the GNU Lesser General Public License |
| 15 | ** along with this program; if not, write to the Free Software |
| 16 | ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #include "sfconfig.h" |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | #include <limits.h> |
| 25 | #include <math.h> |
| 26 | |
| 27 | #include "sndfile.h" |
| 28 | #include "sfendian.h" |
| 29 | #include "common.h" |
| 30 | |
| 31 | #if CPU_IS_LITTLE_ENDIAN |
| 32 | #define DOUBLE64_READ double64_le_read |
| 33 | #define DOUBLE64_WRITE double64_le_write |
| 34 | #elif CPU_IS_BIG_ENDIAN |
| 35 | #define DOUBLE64_READ double64_be_read |
| 36 | #define DOUBLE64_WRITE double64_be_write |
| 37 | #endif |
| 38 | |
| 39 | /* A 32 number which will not overflow when multiplied by sizeof (double). */ |
| 40 | #define SENSIBLE_LEN (0x8000000) |
| 41 | |
| 42 | /*-------------------------------------------------------------------------------------------- |
| 43 | ** Processor floating point capabilities. double64_get_capability () returns one of the |
| 44 | ** latter three values. |
| 45 | */ |
| 46 | |
| 47 | enum |
| 48 | { DOUBLE_UNKNOWN = 0x00, |
| 49 | DOUBLE_CAN_RW_LE = 0x23, |
| 50 | DOUBLE_CAN_RW_BE = 0x34, |
| 51 | DOUBLE_BROKEN_LE = 0x45, |
| 52 | DOUBLE_BROKEN_BE = 0x56 |
| 53 | } ; |
| 54 | |
| 55 | /*-------------------------------------------------------------------------------------------- |
| 56 | ** Prototypes for private functions. |
| 57 | */ |
| 58 | |
| 59 | static sf_count_t host_read_d2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; |
| 60 | static sf_count_t host_read_d2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; |
| 61 | static sf_count_t host_read_d2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; |
| 62 | static sf_count_t host_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; |
| 63 | |
| 64 | static sf_count_t host_write_s2d (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ; |
| 65 | static sf_count_t host_write_i2d (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ; |
| 66 | static sf_count_t host_write_f2d (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ; |
| 67 | static sf_count_t host_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ; |
| 68 | |
| 69 | static void double64_peak_update (SF_PRIVATE *psf, const double *buffer, int count, sf_count_t indx) ; |
| 70 | |
| 71 | static int double64_get_capability (SF_PRIVATE *psf) ; |
| 72 | |
| 73 | static sf_count_t replace_read_d2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; |
| 74 | static sf_count_t replace_read_d2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; |
| 75 | static sf_count_t replace_read_d2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; |
| 76 | static sf_count_t replace_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; |
| 77 | |
| 78 | static sf_count_t replace_write_s2d (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ; |
| 79 | static sf_count_t replace_write_i2d (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ; |
| 80 | static sf_count_t replace_write_f2d (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ; |
| 81 | static sf_count_t replace_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ; |
| 82 | |
| 83 | static void d2bd_read (double *buffer, int count) ; |
| 84 | static void bd2d_write (double *buffer, int count) ; |
| 85 | |
| 86 | /*-------------------------------------------------------------------------------------------- |
| 87 | ** Exported functions. |
| 88 | */ |
| 89 | |
| 90 | int |
| 91 | double64_init (SF_PRIVATE *psf) |
| 92 | { static int double64_caps ; |
| 93 | |
| 94 | double64_caps = double64_get_capability (psf) ; |
| 95 | |
| 96 | psf->blockwidth = sizeof (double) * psf->sf.channels ; |
| 97 | |
| 98 | if (psf->file.mode == SFM_READ || psf->file.mode == SFM_RDWR) |
| 99 | { switch (psf->endian + double64_caps) |
| 100 | { case (SF_ENDIAN_BIG + DOUBLE_CAN_RW_BE) : |
| 101 | psf->data_endswap = SF_FALSE ; |
| 102 | psf->read_short = host_read_d2s ; |
| 103 | psf->read_int = host_read_d2i ; |
| 104 | psf->read_float = host_read_d2f ; |
| 105 | psf->read_double = host_read_d ; |
| 106 | break ; |
| 107 | |
| 108 | case (SF_ENDIAN_LITTLE + DOUBLE_CAN_RW_LE) : |
| 109 | psf->data_endswap = SF_FALSE ; |
| 110 | psf->read_short = host_read_d2s ; |
| 111 | psf->read_int = host_read_d2i ; |
| 112 | psf->read_float = host_read_d2f ; |
| 113 | psf->read_double = host_read_d ; |
| 114 | break ; |
| 115 | |
| 116 | case (SF_ENDIAN_BIG + DOUBLE_CAN_RW_LE) : |
| 117 | psf->data_endswap = SF_TRUE ; |
| 118 | psf->read_short = host_read_d2s ; |
| 119 | psf->read_int = host_read_d2i ; |
| 120 | psf->read_float = host_read_d2f ; |
| 121 | psf->read_double = host_read_d ; |
| 122 | break ; |
| 123 | |
| 124 | case (SF_ENDIAN_LITTLE + DOUBLE_CAN_RW_BE) : |
| 125 | psf->data_endswap = SF_TRUE ; |
| 126 | psf->read_short = host_read_d2s ; |
| 127 | psf->read_int = host_read_d2i ; |
| 128 | psf->read_float = host_read_d2f ; |
| 129 | psf->read_double = host_read_d ; |
| 130 | break ; |
| 131 | |
| 132 | /* When the CPU is not IEEE compatible. */ |
| 133 | case (SF_ENDIAN_BIG + DOUBLE_BROKEN_BE) : |
| 134 | psf->data_endswap = SF_FALSE ; |
| 135 | psf->read_short = replace_read_d2s ; |
| 136 | psf->read_int = replace_read_d2i ; |
| 137 | psf->read_float = replace_read_d2f ; |
| 138 | psf->read_double = replace_read_d ; |
| 139 | break ; |
| 140 | |
| 141 | case (SF_ENDIAN_LITTLE + DOUBLE_BROKEN_LE) : |
| 142 | psf->data_endswap = SF_FALSE ; |
| 143 | psf->read_short = replace_read_d2s ; |
| 144 | psf->read_int = replace_read_d2i ; |
| 145 | psf->read_float = replace_read_d2f ; |
| 146 | psf->read_double = replace_read_d ; |
| 147 | break ; |
| 148 | |
| 149 | case (SF_ENDIAN_BIG + DOUBLE_BROKEN_LE) : |
| 150 | psf->data_endswap = SF_TRUE ; |
| 151 | psf->read_short = replace_read_d2s ; |
| 152 | psf->read_int = replace_read_d2i ; |
| 153 | psf->read_float = replace_read_d2f ; |
| 154 | psf->read_double = replace_read_d ; |
| 155 | break ; |
| 156 | |
| 157 | case (SF_ENDIAN_LITTLE + DOUBLE_BROKEN_BE) : |
| 158 | psf->data_endswap = SF_TRUE ; |
| 159 | psf->read_short = replace_read_d2s ; |
| 160 | psf->read_int = replace_read_d2i ; |
| 161 | psf->read_float = replace_read_d2f ; |
| 162 | psf->read_double = replace_read_d ; |
| 163 | break ; |
| 164 | |
| 165 | default : break ; |
| 166 | } ; |
| 167 | } ; |
| 168 | |
| 169 | if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) |
| 170 | { switch (psf->endian + double64_caps) |
| 171 | { case (SF_ENDIAN_LITTLE + DOUBLE_CAN_RW_LE) : |
| 172 | psf->data_endswap = SF_FALSE ; |
| 173 | psf->write_short = host_write_s2d ; |
| 174 | psf->write_int = host_write_i2d ; |
| 175 | psf->write_float = host_write_f2d ; |
| 176 | psf->write_double = host_write_d ; |
| 177 | break ; |
| 178 | |
| 179 | case (SF_ENDIAN_BIG + DOUBLE_CAN_RW_BE) : |
| 180 | psf->data_endswap = SF_FALSE ; |
| 181 | psf->write_short = host_write_s2d ; |
| 182 | psf->write_int = host_write_i2d ; |
| 183 | psf->write_float = host_write_f2d ; |
| 184 | psf->write_double = host_write_d ; |
| 185 | break ; |
| 186 | |
| 187 | case (SF_ENDIAN_BIG + DOUBLE_CAN_RW_LE) : |
| 188 | psf->data_endswap = SF_TRUE ; |
| 189 | psf->write_short = host_write_s2d ; |
| 190 | psf->write_int = host_write_i2d ; |
| 191 | psf->write_float = host_write_f2d ; |
| 192 | psf->write_double = host_write_d ; |
| 193 | break ; |
| 194 | |
| 195 | case (SF_ENDIAN_LITTLE + DOUBLE_CAN_RW_BE) : |
| 196 | psf->data_endswap = SF_TRUE ; |
| 197 | psf->write_short = host_write_s2d ; |
| 198 | psf->write_int = host_write_i2d ; |
| 199 | psf->write_float = host_write_f2d ; |
| 200 | psf->write_double = host_write_d ; |
| 201 | break ; |
| 202 | |
| 203 | /* When the CPU is not IEEE compatible. */ |
| 204 | case (SF_ENDIAN_LITTLE + DOUBLE_BROKEN_LE) : |
| 205 | psf->data_endswap = SF_FALSE ; |
| 206 | psf->write_short = replace_write_s2d ; |
| 207 | psf->write_int = replace_write_i2d ; |
| 208 | psf->write_float = replace_write_f2d ; |
| 209 | psf->write_double = replace_write_d ; |
| 210 | break ; |
| 211 | |
| 212 | case (SF_ENDIAN_BIG + DOUBLE_BROKEN_BE) : |
| 213 | psf->data_endswap = SF_FALSE ; |
| 214 | psf->write_short = replace_write_s2d ; |
| 215 | psf->write_int = replace_write_i2d ; |
| 216 | psf->write_float = replace_write_f2d ; |
| 217 | psf->write_double = replace_write_d ; |
| 218 | break ; |
| 219 | |
| 220 | case (SF_ENDIAN_BIG + DOUBLE_BROKEN_LE) : |
| 221 | psf->data_endswap = SF_TRUE ; |
| 222 | psf->write_short = replace_write_s2d ; |
| 223 | psf->write_int = replace_write_i2d ; |
| 224 | psf->write_float = replace_write_f2d ; |
| 225 | psf->write_double = replace_write_d ; |
| 226 | break ; |
| 227 | |
| 228 | case (SF_ENDIAN_LITTLE + DOUBLE_BROKEN_BE) : |
| 229 | psf->data_endswap = SF_TRUE ; |
| 230 | psf->write_short = replace_write_s2d ; |
| 231 | psf->write_int = replace_write_i2d ; |
| 232 | psf->write_float = replace_write_f2d ; |
| 233 | psf->write_double = replace_write_d ; |
| 234 | break ; |
| 235 | |
| 236 | default : break ; |
| 237 | } ; |
| 238 | } ; |
| 239 | |
| 240 | if (psf->filelength > psf->dataoffset) |
| 241 | { psf->datalength = (psf->dataend > 0) ? psf->dataend - psf->dataoffset : |
| 242 | psf->filelength - psf->dataoffset ; |
| 243 | } |
| 244 | else |
| 245 | psf->datalength = 0 ; |
| 246 | |
| 247 | psf->sf.frames = psf->datalength / psf->blockwidth ; |
| 248 | |
| 249 | return 0 ; |
| 250 | } /* double64_init */ |
| 251 | |
| 252 | /*---------------------------------------------------------------------------- |
| 253 | ** From : http://www.hpcf.cam.ac.uk/fp_formats.html |
| 254 | ** |
| 255 | ** 64 bit double precision layout (big endian) |
| 256 | ** Sign bit 0 |
| 257 | ** Exponent bits 1-11 |
| 258 | ** Mantissa bits 12-63 |
| 259 | ** Exponent Offset 1023 |
| 260 | ** |
| 261 | ** double single |
| 262 | ** |
| 263 | ** +INF 7FF0000000000000 7F800000 |
| 264 | ** -INF FFF0000000000000 FF800000 |
| 265 | ** NaN 7FF0000000000001 7F800001 |
| 266 | ** to to |
| 267 | ** 7FFFFFFFFFFFFFFF 7FFFFFFF |
| 268 | ** and and |
| 269 | ** FFF0000000000001 FF800001 |
| 270 | ** to to |
| 271 | ** FFFFFFFFFFFFFFFF FFFFFFFF |
| 272 | ** +OVER 7FEFFFFFFFFFFFFF 7F7FFFFF |
| 273 | ** -OVER FFEFFFFFFFFFFFFF FF7FFFFF |
| 274 | ** +UNDER 0010000000000000 00800000 |
| 275 | ** -UNDER 8010000000000000 80800000 |
| 276 | */ |
| 277 | |
| 278 | double |
| 279 | double64_be_read (unsigned char *cptr) |
| 280 | { int exponent, negative, upper, lower ; |
| 281 | double dvalue ; |
| 282 | |
| 283 | negative = (cptr [0] & 0x80) ? 1 : 0 ; |
| 284 | exponent = ((cptr [0] & 0x7F) << 4) | ((cptr [1] >> 4) & 0xF) ; |
| 285 | |
| 286 | /* Might not have a 64 bit long, so load the mantissa into a double. */ |
| 287 | upper = (((cptr [1] & 0xF) << 24) | (cptr [2] << 16) | (cptr [3] << 8) | cptr [4]) ; |
| 288 | lower = (cptr [5] << 16) | (cptr [6] << 8) | cptr [7] ; |
| 289 | |
| 290 | if (exponent == 0 && upper == 0 && lower == 0) |
| 291 | return 0.0 ; |
| 292 | |
| 293 | dvalue = upper + lower / ((double) 0x1000000) ; |
| 294 | dvalue += 0x10000000 ; |
| 295 | |
| 296 | exponent = exponent - 0x3FF ; |
| 297 | |
| 298 | dvalue = dvalue / ((double) 0x10000000) ; |
| 299 | |
| 300 | if (negative) |
| 301 | dvalue *= -1 ; |
| 302 | |
| 303 | if (exponent > 0) |
| 304 | dvalue *= pow (2.0, exponent) ; |
| 305 | else if (exponent < 0) |
| 306 | dvalue /= pow (2.0, abs (exponent)) ; |
| 307 | |
| 308 | return dvalue ; |
| 309 | } /* double64_be_read */ |
| 310 | |
| 311 | double |
| 312 | double64_le_read (unsigned char *cptr) |
| 313 | { int exponent, negative, upper, lower ; |
| 314 | double dvalue ; |
| 315 | |
| 316 | negative = (cptr [7] & 0x80) ? 1 : 0 ; |
| 317 | exponent = ((cptr [7] & 0x7F) << 4) | ((cptr [6] >> 4) & 0xF) ; |
| 318 | |
| 319 | /* Might not have a 64 bit long, so load the mantissa into a double. */ |
| 320 | upper = ((cptr [6] & 0xF) << 24) | (cptr [5] << 16) | (cptr [4] << 8) | cptr [3] ; |
| 321 | lower = (cptr [2] << 16) | (cptr [1] << 8) | cptr [0] ; |
| 322 | |
| 323 | if (exponent == 0 && upper == 0 && lower == 0) |
| 324 | return 0.0 ; |
| 325 | |
| 326 | dvalue = upper + lower / ((double) 0x1000000) ; |
| 327 | dvalue += 0x10000000 ; |
| 328 | |
| 329 | exponent = exponent - 0x3FF ; |
| 330 | |
| 331 | dvalue = dvalue / ((double) 0x10000000) ; |
| 332 | |
| 333 | if (negative) |
| 334 | dvalue *= -1 ; |
| 335 | |
| 336 | if (exponent > 0) |
| 337 | dvalue *= pow (2.0, exponent) ; |
| 338 | else if (exponent < 0) |
| 339 | dvalue /= pow (2.0, abs (exponent)) ; |
| 340 | |
| 341 | return dvalue ; |
| 342 | } /* double64_le_read */ |
| 343 | |
| 344 | void |
| 345 | double64_be_write (double in, unsigned char *out) |
| 346 | { int exponent, mantissa ; |
| 347 | |
| 348 | memset (out, 0, sizeof (double)) ; |
| 349 | |
| 350 | if (fabs (in) < 1e-30) |
| 351 | return ; |
| 352 | |
| 353 | if (in < 0.0) |
| 354 | { in *= -1.0 ; |
| 355 | out [0] |= 0x80 ; |
| 356 | } ; |
| 357 | |
| 358 | in = frexp (in, &exponent) ; |
| 359 | |
| 360 | exponent += 1022 ; |
| 361 | |
| 362 | out [0] |= (exponent >> 4) & 0x7F ; |
| 363 | out [1] |= (exponent << 4) & 0xF0 ; |
| 364 | |
| 365 | in *= 0x20000000 ; |
| 366 | mantissa = lrint (floor (in)) ; |
| 367 | |
| 368 | out [1] |= (mantissa >> 24) & 0xF ; |
| 369 | out [2] = (mantissa >> 16) & 0xFF ; |
| 370 | out [3] = (mantissa >> 8) & 0xFF ; |
| 371 | out [4] = mantissa & 0xFF ; |
| 372 | |
| 373 | in = fmod (in, 1.0) ; |
| 374 | in *= 0x1000000 ; |
| 375 | mantissa = lrint (floor (in)) ; |
| 376 | |
| 377 | out [5] = (mantissa >> 16) & 0xFF ; |
| 378 | out [6] = (mantissa >> 8) & 0xFF ; |
| 379 | out [7] = mantissa & 0xFF ; |
| 380 | |
| 381 | return ; |
| 382 | } /* double64_be_write */ |
| 383 | |
| 384 | void |
| 385 | double64_le_write (double in, unsigned char *out) |
| 386 | { int exponent, mantissa ; |
| 387 | |
| 388 | memset (out, 0, sizeof (double)) ; |
| 389 | |
| 390 | if (fabs (in) < 1e-30) |
| 391 | return ; |
| 392 | |
| 393 | if (in < 0.0) |
| 394 | { in *= -1.0 ; |
| 395 | out [7] |= 0x80 ; |
| 396 | } ; |
| 397 | |
| 398 | in = frexp (in, &exponent) ; |
| 399 | |
| 400 | exponent += 1022 ; |
| 401 | |
| 402 | out [7] |= (exponent >> 4) & 0x7F ; |
| 403 | out [6] |= (exponent << 4) & 0xF0 ; |
| 404 | |
| 405 | in *= 0x20000000 ; |
| 406 | mantissa = lrint (floor (in)) ; |
| 407 | |
| 408 | out [6] |= (mantissa >> 24) & 0xF ; |
| 409 | out [5] = (mantissa >> 16) & 0xFF ; |
| 410 | out [4] = (mantissa >> 8) & 0xFF ; |
| 411 | out [3] = mantissa & 0xFF ; |
| 412 | |
| 413 | in = fmod (in, 1.0) ; |
| 414 | in *= 0x1000000 ; |
| 415 | mantissa = lrint (floor (in)) ; |
| 416 | |
| 417 | out [2] = (mantissa >> 16) & 0xFF ; |
| 418 | out [1] = (mantissa >> 8) & 0xFF ; |
| 419 | out [0] = mantissa & 0xFF ; |
| 420 | |
| 421 | return ; |
| 422 | } /* double64_le_write */ |
| 423 | |
| 424 | /*============================================================================================== |
| 425 | ** Private functions. |
| 426 | */ |
| 427 | |
| 428 | static void |
| 429 | double64_peak_update (SF_PRIVATE *psf, const double *buffer, int count, sf_count_t indx) |
| 430 | { int chan ; |
| 431 | int k, position ; |
| 432 | float fmaxval ; |
| 433 | |
| 434 | for (chan = 0 ; chan < psf->sf.channels ; chan++) |
| 435 | { fmaxval = fabs (buffer [chan]) ; |
| 436 | position = 0 ; |
| 437 | for (k = chan ; k < count ; k += psf->sf.channels) |
| 438 | if (fmaxval < fabs (buffer [k])) |
| 439 | { fmaxval = fabs (buffer [k]) ; |
| 440 | position = k ; |
| 441 | } ; |
| 442 | |
| 443 | if (fmaxval > psf->peak_info->peaks [chan].value) |
| 444 | { psf->peak_info->peaks [chan].value = fmaxval ; |
| 445 | psf->peak_info->peaks [chan].position = psf->write_current + indx + (position / psf->sf.channels) ; |
| 446 | } ; |
| 447 | } ; |
| 448 | |
| 449 | return ; |
| 450 | } /* double64_peak_update */ |
| 451 | |
| 452 | static int |
| 453 | double64_get_capability (SF_PRIVATE *psf) |
| 454 | { union |
| 455 | { double d ; |
| 456 | unsigned char c [8] ; |
| 457 | } data ; |
| 458 | |
| 459 | data.d = 1.234567890123456789 ; /* Some abitrary value. */ |
| 460 | |
| 461 | if (! psf->ieee_replace) |
| 462 | { /* If this test is true ints and floats are compatible and little endian. */ |
| 463 | if (data.c [0] == 0xfb && data.c [1] == 0x59 && data.c [2] == 0x8c && data.c [3] == 0x42 && |
| 464 | data.c [4] == 0xca && data.c [5] == 0xc0 && data.c [6] == 0xf3 && data.c [7] == 0x3f) |
| 465 | return DOUBLE_CAN_RW_LE ; |
| 466 | |
| 467 | /* If this test is true ints and floats are compatible and big endian. */ |
| 468 | if (data.c [0] == 0x3f && data.c [1] == 0xf3 && data.c [2] == 0xc0 && data.c [3] == 0xca && |
| 469 | data.c [4] == 0x42 && data.c [5] == 0x8c && data.c [6] == 0x59 && data.c [7] == 0xfb) |
| 470 | return DOUBLE_CAN_RW_BE ; |
| 471 | } ; |
| 472 | |
| 473 | /* Doubles are broken. Don't expect reading or writing to be fast. */ |
| 474 | psf_log_printf (psf, "Using IEEE replacement code for double.\n") ; |
| 475 | |
| 476 | return (CPU_IS_LITTLE_ENDIAN) ? DOUBLE_BROKEN_LE : DOUBLE_BROKEN_BE ; |
| 477 | } /* double64_get_capability */ |
| 478 | |
| 479 | /*======================================================================================= |
| 480 | */ |
| 481 | |
| 482 | static void |
| 483 | d2s_array (const double *src, int count, short *dest, double scale) |
| 484 | { while (--count >= 0) |
| 485 | { dest [count] = lrint (scale * src [count]) ; |
| 486 | } ; |
| 487 | } /* d2s_array */ |
| 488 | |
| 489 | static void |
| 490 | d2s_clip_array (const double *src, int count, short *dest, double scale) |
| 491 | { while (--count >= 0) |
| 492 | { double tmp = scale * src [count] ; |
| 493 | |
| 494 | if (CPU_CLIPS_POSITIVE == 0 && tmp > 32767.0) |
| 495 | dest [count] = SHRT_MAX ; |
| 496 | else if (CPU_CLIPS_NEGATIVE == 0 && tmp < -32768.0) |
| 497 | dest [count] = SHRT_MIN ; |
| 498 | else |
| 499 | dest [count] = lrint (tmp) ; |
| 500 | } ; |
| 501 | } /* d2s_clip_array */ |
| 502 | |
| 503 | static void |
| 504 | d2i_array (const double *src, int count, int *dest, double scale) |
| 505 | { while (--count >= 0) |
| 506 | { dest [count] = lrint (scale * src [count]) ; |
| 507 | } ; |
| 508 | } /* d2i_array */ |
| 509 | |
| 510 | static void |
| 511 | d2i_clip_array (const double *src, int count, int *dest, double scale) |
| 512 | { while (--count >= 0) |
| 513 | { float tmp = scale * src [count] ; |
| 514 | |
| 515 | if (CPU_CLIPS_POSITIVE == 0 && tmp > (1.0 * INT_MAX)) |
| 516 | dest [count] = INT_MAX ; |
| 517 | else if (CPU_CLIPS_NEGATIVE == 0 && tmp < (-1.0 * INT_MAX)) |
| 518 | dest [count] = INT_MIN ; |
| 519 | else |
| 520 | dest [count] = lrint (tmp) ; |
| 521 | } ; |
| 522 | } /* d2i_clip_array */ |
| 523 | |
| 524 | static inline void |
| 525 | d2f_array (const double *src, int count, float *dest) |
| 526 | { while (--count >= 0) |
| 527 | { dest [count] = src [count] ; |
| 528 | } ; |
| 529 | } /* d2f_array */ |
| 530 | |
| 531 | static inline void |
| 532 | s2d_array (const short *src, double *dest, int count, double scale) |
| 533 | { while (--count >= 0) |
| 534 | { dest [count] = scale * src [count] ; |
| 535 | } ; |
| 536 | } /* s2d_array */ |
| 537 | |
| 538 | static inline void |
| 539 | i2d_array (const int *src, double *dest, int count, double scale) |
| 540 | { while (--count >= 0) |
| 541 | { dest [count] = scale * src [count] ; |
| 542 | } ; |
| 543 | } /* i2d_array */ |
| 544 | |
| 545 | static inline void |
| 546 | f2d_array (const float *src, double *dest, int count) |
| 547 | { while (--count >= 0) |
| 548 | { dest [count] = src [count] ; |
| 549 | } ; |
| 550 | } /* f2d_array */ |
| 551 | |
| 552 | /*---------------------------------------------------------------------------------------------- |
| 553 | */ |
| 554 | |
| 555 | static sf_count_t |
| 556 | host_read_d2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) |
| 557 | { void (*convert) (const double *, int, short *, double) ; |
| 558 | int bufferlen, readcount ; |
| 559 | sf_count_t total = 0 ; |
| 560 | double scale ; |
| 561 | |
| 562 | convert = (psf->add_clipping) ? d2s_clip_array : d2s_array ; |
| 563 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 564 | scale = (psf->float_int_mult == 0) ? 1.0 : 0x7FFF / psf->float_max ; |
| 565 | |
| 566 | while (len > 0) |
| 567 | { if (len < bufferlen) |
| 568 | bufferlen = (int) len ; |
| 569 | readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 570 | |
| 571 | if (psf->data_endswap == SF_TRUE) |
| 572 | endswap_double_array (psf->u.dbuf, readcount) ; |
| 573 | |
| 574 | convert (psf->u.dbuf, readcount, ptr + total, scale) ; |
| 575 | total += readcount ; |
| 576 | len -= readcount ; |
| 577 | if (readcount < bufferlen) |
| 578 | break ; |
| 579 | } ; |
| 580 | |
| 581 | return total ; |
| 582 | } /* host_read_d2s */ |
| 583 | |
| 584 | static sf_count_t |
| 585 | host_read_d2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) |
| 586 | { void (*convert) (const double *, int, int *, double) ; |
| 587 | int bufferlen, readcount ; |
| 588 | sf_count_t total = 0 ; |
| 589 | double scale ; |
| 590 | |
| 591 | convert = (psf->add_clipping) ? d2i_clip_array : d2i_array ; |
| 592 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 593 | scale = (psf->float_int_mult == 0) ? 1.0 : 0x7FFFFFFF / psf->float_max ; |
| 594 | |
| 595 | while (len > 0) |
| 596 | { if (len < bufferlen) |
| 597 | bufferlen = (int) len ; |
| 598 | readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 599 | |
| 600 | if (psf->data_endswap == SF_TRUE) |
| 601 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 602 | |
| 603 | convert (psf->u.dbuf, readcount, ptr + total, scale) ; |
| 604 | total += readcount ; |
| 605 | len -= readcount ; |
| 606 | if (readcount < bufferlen) |
| 607 | break ; |
| 608 | } ; |
| 609 | |
| 610 | return total ; |
| 611 | } /* host_read_d2i */ |
| 612 | |
| 613 | static sf_count_t |
| 614 | host_read_d2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) |
| 615 | { int bufferlen, readcount ; |
| 616 | sf_count_t total = 0 ; |
| 617 | |
| 618 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 619 | |
| 620 | while (len > 0) |
| 621 | { if (len < bufferlen) |
| 622 | bufferlen = (int) len ; |
| 623 | readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 624 | |
| 625 | if (psf->data_endswap == SF_TRUE) |
| 626 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 627 | |
| 628 | d2f_array (psf->u.dbuf, readcount, ptr + total) ; |
| 629 | total += readcount ; |
| 630 | len -= readcount ; |
| 631 | if (readcount < bufferlen) |
| 632 | break ; |
| 633 | } ; |
| 634 | |
| 635 | return total ; |
| 636 | } /* host_read_d2f */ |
| 637 | |
| 638 | static sf_count_t |
| 639 | host_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) |
| 640 | { int bufferlen ; |
| 641 | sf_count_t readcount, total = 0 ; |
| 642 | |
| 643 | readcount = psf_fread (ptr, sizeof (double), len, psf) ; |
| 644 | |
| 645 | if (psf->data_endswap != SF_TRUE) |
| 646 | return readcount ; |
| 647 | |
| 648 | /* If the read length was sensible, endswap output in one go. */ |
| 649 | if (readcount < SENSIBLE_LEN) |
| 650 | { endswap_double_array (ptr, readcount) ; |
| 651 | return readcount ; |
| 652 | } ; |
| 653 | |
| 654 | bufferlen = SENSIBLE_LEN ; |
| 655 | while (len > 0) |
| 656 | { if (len < bufferlen) |
| 657 | bufferlen = (int) len ; |
| 658 | |
| 659 | endswap_double_array (ptr + total, bufferlen) ; |
| 660 | |
| 661 | total += bufferlen ; |
| 662 | len -= bufferlen ; |
| 663 | } ; |
| 664 | |
| 665 | return total ; |
| 666 | } /* host_read_d */ |
| 667 | |
| 668 | static sf_count_t |
| 669 | host_write_s2d (SF_PRIVATE *psf, const short *ptr, sf_count_t len) |
| 670 | { int bufferlen, writecount ; |
| 671 | sf_count_t total = 0 ; |
| 672 | double scale ; |
| 673 | |
| 674 | scale = (psf->scale_int_float == 0) ? 1.0 : 1.0 / 0x8000 ; |
| 675 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 676 | |
| 677 | while (len > 0) |
| 678 | { if (len < bufferlen) |
| 679 | bufferlen = (int) len ; |
| 680 | |
| 681 | s2d_array (ptr + total, psf->u.dbuf, bufferlen, scale) ; |
| 682 | |
| 683 | if (psf->peak_info) |
| 684 | double64_peak_update (psf, psf->u.dbuf, bufferlen, total / psf->sf.channels) ; |
| 685 | |
| 686 | if (psf->data_endswap == SF_TRUE) |
| 687 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 688 | |
| 689 | writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 690 | total += writecount ; |
| 691 | if (writecount < bufferlen) |
| 692 | break ; |
| 693 | len -= writecount ; |
| 694 | } ; |
| 695 | |
| 696 | return total ; |
| 697 | } /* host_write_s2d */ |
| 698 | |
| 699 | static sf_count_t |
| 700 | host_write_i2d (SF_PRIVATE *psf, const int *ptr, sf_count_t len) |
| 701 | { int bufferlen, writecount ; |
| 702 | sf_count_t total = 0 ; |
| 703 | double scale ; |
| 704 | |
| 705 | scale = (psf->scale_int_float == 0) ? 1.0 : 1.0 / (8.0 * 0x10000000) ; |
| 706 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 707 | |
| 708 | while (len > 0) |
| 709 | { if (len < bufferlen) |
| 710 | bufferlen = (int) len ; |
| 711 | i2d_array (ptr + total, psf->u.dbuf, bufferlen, scale) ; |
| 712 | |
| 713 | if (psf->peak_info) |
| 714 | double64_peak_update (psf, psf->u.dbuf, bufferlen, total / psf->sf.channels) ; |
| 715 | |
| 716 | if (psf->data_endswap == SF_TRUE) |
| 717 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 718 | |
| 719 | writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 720 | total += writecount ; |
| 721 | if (writecount < bufferlen) |
| 722 | break ; |
| 723 | len -= writecount ; |
| 724 | } ; |
| 725 | |
| 726 | return total ; |
| 727 | } /* host_write_i2d */ |
| 728 | |
| 729 | static sf_count_t |
| 730 | host_write_f2d (SF_PRIVATE *psf, const float *ptr, sf_count_t len) |
| 731 | { int bufferlen, writecount ; |
| 732 | sf_count_t total = 0 ; |
| 733 | |
| 734 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 735 | |
| 736 | while (len > 0) |
| 737 | { if (len < bufferlen) |
| 738 | bufferlen = (int) len ; |
| 739 | f2d_array (ptr + total, psf->u.dbuf, bufferlen) ; |
| 740 | |
| 741 | if (psf->peak_info) |
| 742 | double64_peak_update (psf, psf->u.dbuf, bufferlen, total / psf->sf.channels) ; |
| 743 | |
| 744 | if (psf->data_endswap == SF_TRUE) |
| 745 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 746 | |
| 747 | writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 748 | total += writecount ; |
| 749 | if (writecount < bufferlen) |
| 750 | break ; |
| 751 | len -= writecount ; |
| 752 | } ; |
| 753 | |
| 754 | return total ; |
| 755 | } /* host_write_f2d */ |
| 756 | |
| 757 | static sf_count_t |
| 758 | host_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) |
| 759 | { int bufferlen, writecount ; |
| 760 | sf_count_t total = 0 ; |
| 761 | |
| 762 | if (psf->peak_info) |
| 763 | double64_peak_update (psf, ptr, len, 0) ; |
| 764 | |
| 765 | if (psf->data_endswap != SF_TRUE) |
| 766 | return psf_fwrite (ptr, sizeof (double), len, psf) ; |
| 767 | |
| 768 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 769 | |
| 770 | while (len > 0) |
| 771 | { if (len < bufferlen) |
| 772 | bufferlen = (int) len ; |
| 773 | |
| 774 | endswap_double_copy (psf->u.dbuf, ptr + total, bufferlen) ; |
| 775 | |
| 776 | writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 777 | total += writecount ; |
| 778 | if (writecount < bufferlen) |
| 779 | break ; |
| 780 | len -= writecount ; |
| 781 | } ; |
| 782 | |
| 783 | return total ; |
| 784 | } /* host_write_d */ |
| 785 | |
| 786 | /*======================================================================================= |
| 787 | */ |
| 788 | |
| 789 | static sf_count_t |
| 790 | replace_read_d2s (SF_PRIVATE *psf, short *ptr, sf_count_t len) |
| 791 | { int bufferlen, readcount ; |
| 792 | sf_count_t total = 0 ; |
| 793 | double scale ; |
| 794 | |
| 795 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 796 | scale = (psf->float_int_mult == 0) ? 1.0 : 0x7FFF / psf->float_max ; |
| 797 | |
| 798 | while (len > 0) |
| 799 | { if (len < bufferlen) |
| 800 | bufferlen = (int) len ; |
| 801 | readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 802 | |
| 803 | if (psf->data_endswap == SF_TRUE) |
| 804 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 805 | |
| 806 | d2bd_read (psf->u.dbuf, bufferlen) ; |
| 807 | |
| 808 | d2s_array (psf->u.dbuf, readcount, ptr + total, scale) ; |
| 809 | total += readcount ; |
| 810 | if (readcount < bufferlen) |
| 811 | break ; |
| 812 | len -= readcount ; |
| 813 | } ; |
| 814 | |
| 815 | return total ; |
| 816 | } /* replace_read_d2s */ |
| 817 | |
| 818 | static sf_count_t |
| 819 | replace_read_d2i (SF_PRIVATE *psf, int *ptr, sf_count_t len) |
| 820 | { int bufferlen, readcount ; |
| 821 | sf_count_t total = 0 ; |
| 822 | double scale ; |
| 823 | |
| 824 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 825 | scale = (psf->float_int_mult == 0) ? 1.0 : 0x7FFFFFFF / psf->float_max ; |
| 826 | |
| 827 | while (len > 0) |
| 828 | { if (len < bufferlen) |
| 829 | bufferlen = (int) len ; |
| 830 | readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 831 | |
| 832 | if (psf->data_endswap == SF_TRUE) |
| 833 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 834 | |
| 835 | d2bd_read (psf->u.dbuf, bufferlen) ; |
| 836 | |
| 837 | d2i_array (psf->u.dbuf, readcount, ptr + total, scale) ; |
| 838 | total += readcount ; |
| 839 | if (readcount < bufferlen) |
| 840 | break ; |
| 841 | len -= readcount ; |
| 842 | } ; |
| 843 | |
| 844 | return total ; |
| 845 | } /* replace_read_d2i */ |
| 846 | |
| 847 | static sf_count_t |
| 848 | replace_read_d2f (SF_PRIVATE *psf, float *ptr, sf_count_t len) |
| 849 | { int bufferlen, readcount ; |
| 850 | sf_count_t total = 0 ; |
| 851 | |
| 852 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 853 | |
| 854 | while (len > 0) |
| 855 | { if (len < bufferlen) |
| 856 | bufferlen = (int) len ; |
| 857 | readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 858 | |
| 859 | if (psf->data_endswap == SF_TRUE) |
| 860 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 861 | |
| 862 | d2bd_read (psf->u.dbuf, bufferlen) ; |
| 863 | |
| 864 | memcpy (ptr + total, psf->u.dbuf, bufferlen * sizeof (double)) ; |
| 865 | |
| 866 | total += readcount ; |
| 867 | if (readcount < bufferlen) |
| 868 | break ; |
| 869 | len -= readcount ; |
| 870 | } ; |
| 871 | |
| 872 | return total ; |
| 873 | } /* replace_read_d2f */ |
| 874 | |
| 875 | static sf_count_t |
| 876 | replace_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) |
| 877 | { int bufferlen, readcount ; |
| 878 | sf_count_t total = 0 ; |
| 879 | |
| 880 | /* FIXME : This is probably nowhere near optimal. */ |
| 881 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 882 | |
| 883 | while (len > 0) |
| 884 | { if (len < bufferlen) |
| 885 | bufferlen = (int) len ; |
| 886 | readcount = psf_fread (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 887 | |
| 888 | if (psf->data_endswap == SF_TRUE) |
| 889 | endswap_double_array (psf->u.dbuf, readcount) ; |
| 890 | |
| 891 | d2bd_read (psf->u.dbuf, readcount) ; |
| 892 | |
| 893 | memcpy (ptr + total, psf->u.dbuf, readcount * sizeof (double)) ; |
| 894 | |
| 895 | total += readcount ; |
| 896 | if (readcount < bufferlen) |
| 897 | break ; |
| 898 | len -= readcount ; |
| 899 | } ; |
| 900 | |
| 901 | return total ; |
| 902 | } /* replace_read_d */ |
| 903 | |
| 904 | static sf_count_t |
| 905 | replace_write_s2d (SF_PRIVATE *psf, const short *ptr, sf_count_t len) |
| 906 | { int bufferlen, writecount ; |
| 907 | sf_count_t total = 0 ; |
| 908 | double scale ; |
| 909 | |
| 910 | scale = (psf->scale_int_float == 0) ? 1.0 : 1.0 / 0x8000 ; |
| 911 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 912 | |
| 913 | while (len > 0) |
| 914 | { if (len < bufferlen) |
| 915 | bufferlen = (int) len ; |
| 916 | s2d_array (ptr + total, psf->u.dbuf, bufferlen, scale) ; |
| 917 | |
| 918 | if (psf->peak_info) |
| 919 | double64_peak_update (psf, psf->u.dbuf, bufferlen, total / psf->sf.channels) ; |
| 920 | |
| 921 | bd2d_write (psf->u.dbuf, bufferlen) ; |
| 922 | |
| 923 | if (psf->data_endswap == SF_TRUE) |
| 924 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 925 | |
| 926 | writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 927 | total += writecount ; |
| 928 | if (writecount < bufferlen) |
| 929 | break ; |
| 930 | len -= writecount ; |
| 931 | } ; |
| 932 | |
| 933 | return total ; |
| 934 | } /* replace_write_s2d */ |
| 935 | |
| 936 | static sf_count_t |
| 937 | replace_write_i2d (SF_PRIVATE *psf, const int *ptr, sf_count_t len) |
| 938 | { int bufferlen, writecount ; |
| 939 | sf_count_t total = 0 ; |
| 940 | double scale ; |
| 941 | |
| 942 | scale = (psf->scale_int_float == 0) ? 1.0 : 1.0 / (8.0 * 0x10000000) ; |
| 943 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 944 | |
| 945 | while (len > 0) |
| 946 | { if (len < bufferlen) |
| 947 | bufferlen = (int) len ; |
| 948 | i2d_array (ptr + total, psf->u.dbuf, bufferlen, scale) ; |
| 949 | |
| 950 | if (psf->peak_info) |
| 951 | double64_peak_update (psf, psf->u.dbuf, bufferlen, total / psf->sf.channels) ; |
| 952 | |
| 953 | bd2d_write (psf->u.dbuf, bufferlen) ; |
| 954 | |
| 955 | if (psf->data_endswap == SF_TRUE) |
| 956 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 957 | |
| 958 | writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 959 | total += writecount ; |
| 960 | if (writecount < bufferlen) |
| 961 | break ; |
| 962 | len -= writecount ; |
| 963 | } ; |
| 964 | |
| 965 | return total ; |
| 966 | } /* replace_write_i2d */ |
| 967 | |
| 968 | static sf_count_t |
| 969 | replace_write_f2d (SF_PRIVATE *psf, const float *ptr, sf_count_t len) |
| 970 | { int bufferlen, writecount ; |
| 971 | sf_count_t total = 0 ; |
| 972 | |
| 973 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 974 | |
| 975 | while (len > 0) |
| 976 | { if (len < bufferlen) |
| 977 | bufferlen = (int) len ; |
| 978 | f2d_array (ptr + total, psf->u.dbuf, bufferlen) ; |
| 979 | |
| 980 | bd2d_write (psf->u.dbuf, bufferlen) ; |
| 981 | |
| 982 | if (psf->data_endswap == SF_TRUE) |
| 983 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 984 | |
| 985 | writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 986 | total += writecount ; |
| 987 | if (writecount < bufferlen) |
| 988 | break ; |
| 989 | len -= writecount ; |
| 990 | } ; |
| 991 | |
| 992 | return total ; |
| 993 | } /* replace_write_f2d */ |
| 994 | |
| 995 | static sf_count_t |
| 996 | replace_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) |
| 997 | { int bufferlen, writecount ; |
| 998 | sf_count_t total = 0 ; |
| 999 | |
| 1000 | /* FIXME : This is probably nowhere near optimal. */ |
| 1001 | if (psf->peak_info) |
| 1002 | double64_peak_update (psf, ptr, len, 0) ; |
| 1003 | |
| 1004 | bufferlen = ARRAY_LEN (psf->u.dbuf) ; |
| 1005 | |
| 1006 | while (len > 0) |
| 1007 | { if (len < bufferlen) |
| 1008 | bufferlen = (int) len ; |
| 1009 | |
| 1010 | memcpy (psf->u.dbuf, ptr + total, bufferlen * sizeof (double)) ; |
| 1011 | |
| 1012 | bd2d_write (psf->u.dbuf, bufferlen) ; |
| 1013 | |
| 1014 | if (psf->data_endswap == SF_TRUE) |
| 1015 | endswap_double_array (psf->u.dbuf, bufferlen) ; |
| 1016 | |
| 1017 | writecount = psf_fwrite (psf->u.dbuf, sizeof (double), bufferlen, psf) ; |
| 1018 | total += writecount ; |
| 1019 | if (writecount < bufferlen) |
| 1020 | break ; |
| 1021 | len -= writecount ; |
| 1022 | } ; |
| 1023 | |
| 1024 | return total ; |
| 1025 | } /* replace_write_d */ |
| 1026 | |
| 1027 | /*---------------------------------------------------------------------------------------------- |
| 1028 | */ |
| 1029 | |
| 1030 | static void |
| 1031 | d2bd_read (double *buffer, int count) |
| 1032 | { while (--count >= 0) |
| 1033 | { buffer [count] = DOUBLE64_READ ((unsigned char *) (buffer + count)) ; |
| 1034 | } ; |
| 1035 | } /* d2bd_read */ |
| 1036 | |
| 1037 | static void |
| 1038 | bd2d_write (double *buffer, int count) |
| 1039 | { while (--count >= 0) |
| 1040 | { DOUBLE64_WRITE (buffer [count], (unsigned char*) (buffer + count)) ; |
| 1041 | } ; |
| 1042 | } /* bd2d_write */ |
| 1043 | |