1 // 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 /* 4 ****************************************************************************** 5 * 6 * Copyright (C) 1997-2016, International Business Machines 7 * Corporation and others. All Rights Reserved. 8 * 9 ****************************************************************************** 10 * 11 * FILE NAME : putilimp.h 12 * 13 * Date Name Description 14 * 10/17/04 grhoten Move internal functions from putil.h to this file. 15 ****************************************************************************** 16 */ 17 18 #ifndef PUTILIMP_H 19 #define PUTILIMP_H 20 21 #include "unicode/utypes.h" 22 #include "unicode/putil.h" 23 24 /** 25 * \def U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC 26 * Nearly all CPUs and compilers implement a right-shift of a signed integer 27 * as an Arithmetic Shift Right which copies the sign bit (the Most Significant Bit (MSB)) 28 * into the vacated bits (sign extension). 29 * For example, (int32_t)0xfff5fff3>>4 becomes 0xffff5fff and -1>>1=-1. 30 * 31 * This can be useful for storing a signed value in the upper bits 32 * and another bit field in the lower bits. 33 * The signed value can be retrieved by simple right-shifting. 34 * 35 * This is consistent with the Java language. 36 * 37 * However, the C standard allows compilers to implement a right-shift of a signed integer 38 * as a Logical Shift Right which copies a 0 into the vacated bits. 39 * For example, (int32_t)0xfff5fff3>>4 becomes 0x0fff5fff and -1>>1=0x7fffffff. 40 * 41 * Code that depends on the natural behavior should be guarded with this macro, 42 * with an alternate path for unusual platforms. 43 * @internal 44 */ 45 #ifdef U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC 46 /* Use the predefined value. */ 47 #else 48 /* 49 * Nearly all CPUs & compilers implement a right-shift of a signed integer 50 * as an Arithmetic Shift Right (with sign extension). 51 */ 52 # define U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC 1 53 #endif 54 55 /** Define this to 1 if your platform supports IEEE 754 floating point, 56 to 0 if it does not. */ 57 #ifndef IEEE_754 58 # define IEEE_754 1 59 #endif 60 61 /** 62 * uintptr_t is an optional part of the standard definitions in stdint.h. 63 * The opengroup.org documentation for stdint.h says 64 * "On XSI-conformant systems, the intptr_t and uintptr_t types are required; 65 * otherwise, they are optional." 66 * We assume that when uintptr_t is defined, UINTPTR_MAX is defined as well. 67 * 68 * Do not use ptrdiff_t since it is signed. size_t is unsigned. 69 */ 70 /* TODO: This check fails on some z environments. Filed a ticket #9357 for this. */ 71 #if !defined(__intptr_t_defined) && !defined(UINTPTR_MAX) && (U_PLATFORM != U_PF_OS390) 72 typedef size_t uintptr_t; 73 #endif 74 75 /*===========================================================================*/ 76 /** @{ Information about POSIX support */ 77 /*===========================================================================*/ 78 79 #ifdef U_HAVE_NL_LANGINFO_CODESET 80 /* Use the predefined value. */ 81 #elif U_PLATFORM_USES_ONLY_WIN32_API || U_PLATFORM == U_PF_ANDROID || U_PLATFORM == U_PF_QNX 82 # define U_HAVE_NL_LANGINFO_CODESET 0 83 #else 84 # define U_HAVE_NL_LANGINFO_CODESET 1 85 #endif 86 87 #ifdef U_NL_LANGINFO_CODESET 88 /* Use the predefined value. */ 89 #elif !U_HAVE_NL_LANGINFO_CODESET 90 # define U_NL_LANGINFO_CODESET -1 91 #elif U_PLATFORM == U_PF_OS400 92 /* not defined */ 93 #else 94 # define U_NL_LANGINFO_CODESET CODESET 95 #endif 96 97 #if defined(U_TZSET) || defined(U_HAVE_TZSET) 98 /* Use the predefined value. */ 99 #elif U_PLATFORM_USES_ONLY_WIN32_API 100 // UWP doesn't support tzset or environment variables for tz 101 #if U_PLATFORM_HAS_WINUWP_API == 0 102 # define U_TZSET _tzset 103 #endif 104 #elif U_PLATFORM == U_PF_OS400 105 /* not defined */ 106 #else 107 # define U_TZSET tzset 108 #endif 109 110 #if defined(U_TIMEZONE) || defined(U_HAVE_TIMEZONE) 111 /* Use the predefined value. */ 112 #elif U_PLATFORM == U_PF_ANDROID 113 # define U_TIMEZONE timezone 114 #elif defined(__UCLIBC__) 115 // uClibc does not have __timezone or _timezone. 116 #elif defined(_NEWLIB_VERSION) 117 # define U_TIMEZONE _timezone 118 #elif defined(__GLIBC__) 119 // glibc 120 # define U_TIMEZONE __timezone 121 #elif U_PLATFORM_IS_LINUX_BASED 122 // not defined 123 #elif U_PLATFORM_USES_ONLY_WIN32_API 124 # define U_TIMEZONE _timezone 125 #elif U_PLATFORM == U_PF_BSD && !defined(__NetBSD__) 126 /* not defined */ 127 #elif U_PLATFORM == U_PF_OS400 128 /* not defined */ 129 #elif U_PLATFORM == U_PF_IPHONE 130 /* not defined */ 131 #else 132 # define U_TIMEZONE timezone 133 #endif 134 135 #if defined(U_TZNAME) || defined(U_HAVE_TZNAME) 136 /* Use the predefined value. */ 137 #elif U_PLATFORM_USES_ONLY_WIN32_API 138 /* not usable on all windows platforms */ 139 #if U_PLATFORM_HAS_WINUWP_API == 0 140 # define U_TZNAME _tzname 141 #endif 142 #elif U_PLATFORM == U_PF_OS400 143 /* not defined */ 144 #else 145 # define U_TZNAME tzname 146 #endif 147 148 #ifdef U_HAVE_MMAP 149 /* Use the predefined value. */ 150 #elif U_PLATFORM_USES_ONLY_WIN32_API 151 # define U_HAVE_MMAP 0 152 #else 153 # define U_HAVE_MMAP 1 154 #endif 155 156 #ifdef U_HAVE_POPEN 157 /* Use the predefined value. */ 158 #elif U_PLATFORM_USES_ONLY_WIN32_API 159 # define U_HAVE_POPEN 0 160 #elif U_PLATFORM == U_PF_OS400 161 # define U_HAVE_POPEN 0 162 #else 163 # define U_HAVE_POPEN 1 164 #endif 165 166 /** 167 * \def U_HAVE_DIRENT_H 168 * Defines whether dirent.h is available. 169 * @internal 170 */ 171 #ifdef U_HAVE_DIRENT_H 172 /* Use the predefined value. */ 173 #elif U_PLATFORM_USES_ONLY_WIN32_API 174 # define U_HAVE_DIRENT_H 0 175 #else 176 # define U_HAVE_DIRENT_H 1 177 #endif 178 179 /** @} */ 180 181 /*===========================================================================*/ 182 /** @{ GCC built in functions for atomic memory operations */ 183 /*===========================================================================*/ 184 185 /** 186 * \def U_HAVE_GCC_ATOMICS 187 * @internal 188 */ 189 #ifdef U_HAVE_GCC_ATOMICS 190 /* Use the predefined value. */ 191 #elif U_PLATFORM == U_PF_MINGW 192 #define U_HAVE_GCC_ATOMICS 0 193 #elif U_GCC_MAJOR_MINOR >= 404 || defined(__clang__) 194 /* TODO: Intel icc and IBM xlc on AIX also support gcc atomics. (Intel originated them.) 195 * Add them for these compilers. 196 * Note: Clang sets __GNUC__ defines for version 4.2, so misses the 4.4 test here. 197 */ 198 # define U_HAVE_GCC_ATOMICS 1 199 #else 200 # define U_HAVE_GCC_ATOMICS 0 201 #endif 202 203 /** @} */ 204 205 /** 206 * \def U_HAVE_STD_ATOMICS 207 * Defines whether to use the standard C++11 <atomic> functions 208 * If false, ICU will fall back to compiler or platform specific alternatives. 209 * Note: support for these fall back options for atomics will be removed in a future version 210 * of ICU, and the use of C++ 11 atomics will be required. 211 * @internal 212 */ 213 #ifdef U_HAVE_STD_ATOMICS 214 /* Use the predefined value. */ 215 #else 216 # define U_HAVE_STD_ATOMICS 1 217 #endif 218 219 /** 220 * \def U_HAVE_CLANG_ATOMICS 221 * Defines whether Clang c11 style built-in atomics are available. 222 * These are used in preference to gcc atomics when both are available. 223 */ 224 #ifdef U_HAVE_CLANG_ATOMICS 225 /* Use the predefined value. */ 226 #elif __has_builtin(__c11_atomic_load) && \ 227 __has_builtin(__c11_atomic_store) && \ 228 __has_builtin(__c11_atomic_fetch_add) && \ 229 __has_builtin(__c11_atomic_fetch_sub) 230 # define U_HAVE_CLANG_ATOMICS 1 231 #else 232 # define U_HAVE_CLANG_ATOMICS 0 233 #endif 234 235 /*===========================================================================*/ 236 /** @{ Programs used by ICU code */ 237 /*===========================================================================*/ 238 239 /** 240 * \def U_MAKE_IS_NMAKE 241 * Defines whether the "make" program is Windows nmake. 242 */ 243 #ifdef U_MAKE_IS_NMAKE 244 /* Use the predefined value. */ 245 #elif U_PLATFORM == U_PF_WINDOWS 246 # define U_MAKE_IS_NMAKE 1 247 #else 248 # define U_MAKE_IS_NMAKE 0 249 #endif 250 251 /** @} */ 252 253 /*==========================================================================*/ 254 /* Platform utilities */ 255 /*==========================================================================*/ 256 257 /** 258 * Platform utilities isolates the platform dependencies of the 259 * library. For each platform which this code is ported to, these 260 * functions may have to be re-implemented. 261 */ 262 263 /** 264 * Floating point utility to determine if a double is Not a Number (NaN). 265 * @internal 266 */ 267 U_INTERNAL UBool U_EXPORT2 uprv_isNaN(double d); 268 /** 269 * Floating point utility to determine if a double has an infinite value. 270 * @internal 271 */ 272 U_INTERNAL UBool U_EXPORT2 uprv_isInfinite(double d); 273 /** 274 * Floating point utility to determine if a double has a positive infinite value. 275 * @internal 276 */ 277 U_INTERNAL UBool U_EXPORT2 uprv_isPositiveInfinity(double d); 278 /** 279 * Floating point utility to determine if a double has a negative infinite value. 280 * @internal 281 */ 282 U_INTERNAL UBool U_EXPORT2 uprv_isNegativeInfinity(double d); 283 /** 284 * Floating point utility that returns a Not a Number (NaN) value. 285 * @internal 286 */ 287 U_INTERNAL double U_EXPORT2 uprv_getNaN(void); 288 /** 289 * Floating point utility that returns an infinite value. 290 * @internal 291 */ 292 U_INTERNAL double U_EXPORT2 uprv_getInfinity(void); 293 294 /** 295 * Floating point utility to truncate a double. 296 * @internal 297 */ 298 U_INTERNAL double U_EXPORT2 uprv_trunc(double d); 299 /** 300 * Floating point utility to calculate the floor of a double. 301 * @internal 302 */ 303 U_INTERNAL double U_EXPORT2 uprv_floor(double d); 304 /** 305 * Floating point utility to calculate the ceiling of a double. 306 * @internal 307 */ 308 U_INTERNAL double U_EXPORT2 uprv_ceil(double d); 309 /** 310 * Floating point utility to calculate the absolute value of a double. 311 * @internal 312 */ 313 U_INTERNAL double U_EXPORT2 uprv_fabs(double d); 314 /** 315 * Floating point utility to calculate the fractional and integer parts of a double. 316 * @internal 317 */ 318 U_INTERNAL double U_EXPORT2 uprv_modf(double d, double* pinteger); 319 /** 320 * Floating point utility to calculate the remainder of a double divided by another double. 321 * @internal 322 */ 323 U_INTERNAL double U_EXPORT2 uprv_fmod(double d, double y); 324 /** 325 * Floating point utility to calculate d to the power of exponent (d^exponent). 326 * @internal 327 */ 328 U_INTERNAL double U_EXPORT2 uprv_pow(double d, double exponent); 329 /** 330 * Floating point utility to calculate 10 to the power of exponent (10^exponent). 331 * @internal 332 */ 333 U_INTERNAL double U_EXPORT2 uprv_pow10(int32_t exponent); 334 /** 335 * Floating point utility to calculate the maximum value of two doubles. 336 * @internal 337 */ 338 U_INTERNAL double U_EXPORT2 uprv_fmax(double d, double y); 339 /** 340 * Floating point utility to calculate the minimum value of two doubles. 341 * @internal 342 */ 343 U_INTERNAL double U_EXPORT2 uprv_fmin(double d, double y); 344 /** 345 * Private utility to calculate the maximum value of two integers. 346 * @internal 347 */ 348 U_INTERNAL int32_t U_EXPORT2 uprv_max(int32_t d, int32_t y); 349 /** 350 * Private utility to calculate the minimum value of two integers. 351 * @internal 352 */ 353 U_INTERNAL int32_t U_EXPORT2 uprv_min(int32_t d, int32_t y); 354 355 #if U_IS_BIG_ENDIAN 356 # define uprv_isNegative(number) (*((signed char *)&(number))<0) 357 #else 358 # define uprv_isNegative(number) (*((signed char *)&(number)+sizeof(number)-1)<0) 359 #endif 360 361 /** 362 * Return the largest positive number that can be represented by an integer 363 * type of arbitrary bit length. 364 * @internal 365 */ 366 U_INTERNAL double U_EXPORT2 uprv_maxMantissa(void); 367 368 /** 369 * Floating point utility to calculate the logarithm of a double. 370 * @internal 371 */ 372 U_INTERNAL double U_EXPORT2 uprv_log(double d); 373 374 /** 375 * Does common notion of rounding e.g. uprv_floor(x + 0.5); 376 * @param x the double number 377 * @return the rounded double 378 * @internal 379 */ 380 U_INTERNAL double U_EXPORT2 uprv_round(double x); 381 382 /** 383 * Adds the signed integers a and b, storing the result in res. 384 * Checks for signed integer overflow. 385 * Similar to the GCC/Clang extension __builtin_add_overflow 386 * 387 * @param a The first operand. 388 * @param b The second operand. 389 * @param res a + b 390 * @return true if overflow occurred; false if no overflow occurred. 391 * @internal 392 */ 393 U_INTERNAL UBool U_EXPORT2 uprv_add32_overflow(int32_t a, int32_t b, int32_t* res); 394 395 /** 396 * Multiplies the signed integers a and b, storing the result in res. 397 * Checks for signed integer overflow. 398 * Similar to the GCC/Clang extension __builtin_mul_overflow 399 * 400 * @param a The first multiplicand. 401 * @param b The second multiplicand. 402 * @param res a * b 403 * @return true if overflow occurred; false if no overflow occurred. 404 * @internal 405 */ 406 U_INTERNAL UBool U_EXPORT2 uprv_mul32_overflow(int32_t a, int32_t b, int32_t* res); 407 408 #if 0 409 /** 410 * Returns the number of digits after the decimal point in a double number x. 411 * 412 * @param x the double number 413 * @return the number of digits after the decimal point in a double number x. 414 * @internal 415 */ 416 /*U_INTERNAL int32_t U_EXPORT2 uprv_digitsAfterDecimal(double x);*/ 417 #endif 418 419 #if !U_CHARSET_IS_UTF8 420 /** 421 * Please use ucnv_getDefaultName() instead. 422 * Return the default codepage for this platform and locale. 423 * This function can call setlocale() on Unix platforms. Please read the 424 * platform documentation on setlocale() before calling this function. 425 * @return the default codepage for this platform 426 * @internal 427 */ 428 U_INTERNAL const char* U_EXPORT2 uprv_getDefaultCodepage(void); 429 #endif 430 431 /** 432 * Please use uloc_getDefault() instead. 433 * Return the default locale ID string by querying the system, or 434 * zero if one cannot be found. 435 * This function can call setlocale() on Unix platforms. Please read the 436 * platform documentation on setlocale() before calling this function. 437 * @return the default locale ID string 438 * @internal 439 */ 440 U_INTERNAL const char* U_EXPORT2 uprv_getDefaultLocaleID(void); 441 442 /** 443 * Time zone utilities 444 * 445 * Wrappers for C runtime library functions relating to timezones. 446 * The t_tzset() function (similar to tzset) uses the current setting 447 * of the environment variable TZ to assign values to three global 448 * variables: daylight, timezone, and tzname. These variables have the 449 * following meanings, and are declared in <time.h>. 450 * 451 * daylight Nonzero if daylight-saving-time zone (DST) is specified 452 * in TZ; otherwise, 0. Default value is 1. 453 * timezone Difference in seconds between coordinated universal 454 * time and local time. E.g., -28,800 for PST (GMT-8hrs) 455 * tzname(0) Three-letter time-zone name derived from TZ environment 456 * variable. E.g., "PST". 457 * tzname(1) Three-letter DST zone name derived from TZ environment 458 * variable. E.g., "PDT". If DST zone is omitted from TZ, 459 * tzname(1) is an empty string. 460 * 461 * Notes: For example, to set the TZ environment variable to correspond 462 * to the current time zone in Germany, you can use one of the 463 * following statements: 464 * 465 * set TZ=GST1GDT 466 * set TZ=GST+1GDT 467 * 468 * If the TZ value is not set, t_tzset() attempts to use the time zone 469 * information specified by the operating system. Under Windows NT 470 * and Windows 95, this information is specified in the Control Panel's 471 * Date/Time application. 472 * @internal 473 */ 474 U_INTERNAL void U_EXPORT2 uprv_tzset(void); 475 476 /** 477 * Difference in seconds between coordinated universal 478 * time and local time. E.g., -28,800 for PST (GMT-8hrs) 479 * @return the difference in seconds between coordinated universal time and local time. 480 * @internal 481 */ 482 U_INTERNAL int32_t U_EXPORT2 uprv_timezone(void); 483 484 /** 485 * tzname(0) Three-letter time-zone name derived from TZ environment 486 * variable. E.g., "PST". 487 * tzname(1) Three-letter DST zone name derived from TZ environment 488 * variable. E.g., "PDT". If DST zone is omitted from TZ, 489 * tzname(1) is an empty string. 490 * @internal 491 */ 492 U_INTERNAL const char* U_EXPORT2 uprv_tzname(int n); 493 494 /** 495 * Reset the global tzname cache. 496 * @internal 497 */ 498 U_INTERNAL void uprv_tzname_clear_cache(); 499 500 /** 501 * Get UTC (GMT) time measured in milliseconds since 0:00 on 1/1/1970. 502 * This function is affected by 'faketime' and should be the bottleneck for all user-visible ICU time functions. 503 * @return the UTC time measured in milliseconds 504 * @internal 505 */ 506 U_INTERNAL UDate U_EXPORT2 uprv_getUTCtime(void); 507 508 /** 509 * Get UTC (GMT) time measured in milliseconds since 0:00 on 1/1/1970. 510 * This function is not affected by 'faketime', so it should only be used by low level test functions- not by anything that 511 * exposes time to the end user. 512 * @return the UTC time measured in milliseconds 513 * @internal 514 */ 515 U_INTERNAL UDate U_EXPORT2 uprv_getRawUTCtime(void); 516 517 /** 518 * Determine whether a pathname is absolute or not, as defined by the platform. 519 * @param path Pathname to test 520 * @return TRUE if the path is absolute 521 * @internal (ICU 3.0) 522 */ 523 U_INTERNAL UBool U_EXPORT2 uprv_pathIsAbsolute(const char *path); 524 525 /** 526 * Use U_MAX_PTR instead of this function. 527 * @param void pointer to test 528 * @return the largest possible pointer greater than the base 529 * @internal (ICU 3.8) 530 */ 531 U_INTERNAL void * U_EXPORT2 uprv_maximumPtr(void *base); 532 533 /** 534 * Maximum value of a (void*) - use to indicate the limit of an 'infinite' buffer. 535 * In fact, buffer sizes must not exceed 2GB so that the difference between 536 * the buffer limit and the buffer start can be expressed in an int32_t. 537 * 538 * The definition of U_MAX_PTR must fulfill the following conditions: 539 * - return the largest possible pointer greater than base 540 * - return a valid pointer according to the machine architecture (AS/400, 64-bit, etc.) 541 * - avoid wrapping around at high addresses 542 * - make sure that the returned pointer is not farther from base than 0x7fffffff bytes 543 * 544 * @param base The beginning of a buffer to find the maximum offset from 545 * @internal 546 */ 547 #ifndef U_MAX_PTR 548 # if U_PLATFORM == U_PF_OS390 && !defined(_LP64) 549 /* We have 31-bit pointers. */ 550 # define U_MAX_PTR(base) ((void *)0x7fffffff) 551 # elif U_PLATFORM == U_PF_OS400 552 # define U_MAX_PTR(base) uprv_maximumPtr((void *)base) 553 # elif 0 554 /* 555 * For platforms where pointers are scalar values (which is normal, but unlike i5/OS) 556 * but that do not define uintptr_t. 557 * 558 * However, this does not work on modern compilers: 559 * The C++ standard does not define pointer overflow, and allows compilers to 560 * assume that p+u>p for any pointer p and any integer u>0. 561 * Thus, modern compilers optimize away the ">" comparison. 562 * (See ICU tickets #7187 and #8096.) 563 */ 564 # define U_MAX_PTR(base) \ 565 ((void *)(((char *)(base)+0x7fffffffu) > (char *)(base) \ 566 ? ((char *)(base)+0x7fffffffu) \ 567 : (char *)-1)) 568 # else 569 /* Default version. C++ standard compliant for scalar pointers. */ 570 # define U_MAX_PTR(base) \ 571 ((void *)(((uintptr_t)(base)+0x7fffffffu) > (uintptr_t)(base) \ 572 ? ((uintptr_t)(base)+0x7fffffffu) \ 573 : (uintptr_t)-1)) 574 # endif 575 #endif 576 577 578 #ifdef __cplusplus 579 /** 580 * Pin a buffer capacity such that doing pointer arithmetic 581 * on the destination pointer and capacity cannot overflow. 582 * 583 * The pinned capacity must fulfill the following conditions (for positive capacities): 584 * - dest + capacity is a valid pointer according to the machine arcitecture (AS/400, 64-bit, etc.) 585 * - (dest + capacity) >= dest 586 * - The size (in bytes) of T[capacity] does not exceed 0x7fffffff 587 * 588 * @param dest the destination buffer pointer. 589 * @param capacity the requested buffer capacity, in units of type T. 590 * @return the pinned capacity. 591 * @internal 592 */ 593 template <typename T> 594 inline int32_t pinCapacity(T *dest, int32_t capacity) { 595 if (capacity <= 0) { return capacity; } 596 597 uintptr_t destInt = (uintptr_t)dest; 598 uintptr_t maxInt; 599 600 # if U_PLATFORM == U_PF_OS390 && !defined(_LP64) 601 // We have 31-bit pointers. 602 maxInt = 0x7fffffff; 603 # elif U_PLATFORM == U_PF_OS400 604 maxInt = (uintptr_t)uprv_maximumPtr((void *)dest); 605 # else 606 maxInt = destInt + 0x7fffffffu; 607 if (maxInt < destInt) { 608 // Less than 2GB to the end of the address space. 609 // Pin to that to prevent address overflow. 610 maxInt = (uintptr_t)-1; 611 } 612 # endif 613 614 uintptr_t maxBytes = maxInt - destInt; // max. 2GB 615 int32_t maxCapacity = (int32_t)(maxBytes / sizeof(T)); 616 return capacity <= maxCapacity ? capacity : maxCapacity; 617 } 618 #endif // __cplusplus 619 620 /* Dynamic Library Functions */ 621 622 typedef void (UVoidFunction)(void); 623 624 #if U_ENABLE_DYLOAD 625 /** 626 * Load a library 627 * @internal (ICU 4.4) 628 */ 629 U_INTERNAL void * U_EXPORT2 uprv_dl_open(const char *libName, UErrorCode *status); 630 631 /** 632 * Close a library 633 * @internal (ICU 4.4) 634 */ 635 U_INTERNAL void U_EXPORT2 uprv_dl_close( void *lib, UErrorCode *status); 636 637 /** 638 * Extract a symbol from a library (function) 639 * @internal (ICU 4.8) 640 */ 641 U_INTERNAL UVoidFunction* U_EXPORT2 uprv_dlsym_func( void *lib, const char *symbolName, UErrorCode *status); 642 643 /** 644 * Extract a symbol from a library (function) 645 * Not implemented, no clients. 646 * @internal 647 */ 648 /* U_INTERNAL void * U_EXPORT2 uprv_dlsym_data( void *lib, const char *symbolName, UErrorCode *status); */ 649 650 #endif 651 652 /** 653 * Define malloc and related functions 654 * @internal 655 */ 656 #if U_PLATFORM == U_PF_OS400 657 # define uprv_default_malloc(x) _C_TS_malloc(x) 658 # define uprv_default_realloc(x,y) _C_TS_realloc(x,y) 659 # define uprv_default_free(x) _C_TS_free(x) 660 /* also _C_TS_calloc(x) */ 661 #else 662 /* C defaults */ 663 # define uprv_default_malloc(x) malloc(x) 664 # define uprv_default_realloc(x,y) realloc(x,y) 665 # define uprv_default_free(x) free(x) 666 #endif 667 668 669 #endif 670
