icuSources/common/putilimp.h

   1 /*
   2 ******************************************************************************
   3 *
   4 *   Copyright (C) 1997-2015, International Business Machines
   5 *   Corporation and others.  All Rights Reserved.
   6 *
   7 ******************************************************************************
   8 *
   9 *  FILE NAME : putilimp.h
  10 *
  11 *   Date        Name        Description
  12 *   10/17/04    grhoten     Move internal functions from putil.h to this file.
  13 ******************************************************************************
  14 */
  15
  16 #ifndef PUTILIMP_H
  17 #define PUTILIMP_H
  18
  19 #include "unicode/utypes.h"
  20 #include "unicode/putil.h"
  21
  22 /**
  23  * \def U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC
  24  * Nearly all CPUs and compilers implement a right-shift of a signed integer
  25  * as an Arithmetic Shift Right which copies the sign bit (the Most Significant Bit (MSB))
  26  * into the vacated bits (sign extension).
  27  * For example, (int32_t)0xfff5fff3>>4 becomes 0xffff5fff and -1>>1=-1.
  28  *
  29  * This can be useful for storing a signed value in the upper bits
  30  * and another bit field in the lower bits.
  31  * The signed value can be retrieved by simple right-shifting.
  32  *
  33  * This is consistent with the Java language.
  34  *
  35  * However, the C standard allows compilers to implement a right-shift of a signed integer
  36  * as a Logical Shift Right which copies a 0 into the vacated bits.
  37  * For example, (int32_t)0xfff5fff3>>4 becomes 0x0fff5fff and -1>>1=0x7fffffff.
  38  *
  39  * Code that depends on the natural behavior should be guarded with this macro,
  40  * with an alternate path for unusual platforms.
  41  * @internal
  42  */
  43 #ifdef U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC
  44     /* Use the predefined value. */
  45 #else
  46     /*
  47      * Nearly all CPUs & compilers implement a right-shift of a signed integer
  48      * as an Arithmetic Shift Right (with sign extension).
  49      */
  50 #   define U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC 1
  51 #endif
  52
  53 /** Define this to 1 if your platform supports IEEE 754 floating point,
  54    to 0 if it does not. */
  55 #ifndef IEEE_754
  56 #   define IEEE_754 1
  57 #endif
  58
  59 /**
  60  * uintptr_t is an optional part of the standard definitions in stdint.h.
  61  * The opengroup.org documentation for stdint.h says
  62  * "On XSI-conformant systems, the intptr_t and uintptr_t types are required;
  63  * otherwise, they are optional."
  64  * We assume that when uintptr_t is defined, UINTPTR_MAX is defined as well.
  65  *
  66  * Do not use ptrdiff_t since it is signed. size_t is unsigned.
  67  */
  68 /* TODO: This check fails on some z environments. Filed a ticket #9357 for this. */
  69 #if !defined(__intptr_t_defined) && !defined(UINTPTR_MAX) && (U_PLATFORM != U_PF_OS390)
  70 typedef size_t uintptr_t;
  71 #endif
  72
  73 /**
  74  * \def U_HAVE_MSVC_2003_OR_EARLIER
  75  * Flag for workaround of MSVC 2003 optimization bugs
  76  * @internal
  77  */
  78 #if !defined(U_HAVE_MSVC_2003_OR_EARLIER) && defined(_MSC_VER) && (_MSC_VER < 1400)
  79 #define U_HAVE_MSVC_2003_OR_EARLIER
  80 #endif
  81
  82 /*===========================================================================*/
  83 /** @{ Information about POSIX support                                       */
  84 /*===========================================================================*/
  85
  86 #ifdef U_HAVE_NL_LANGINFO_CODESET
  87     /* Use the predefined value. */
  88 #elif U_PLATFORM_HAS_WIN32_API || U_PLATFORM == U_PF_ANDROID || U_PLATFORM == U_PF_QNX
  89 #   define U_HAVE_NL_LANGINFO_CODESET 0
  90 #else
  91 #   define U_HAVE_NL_LANGINFO_CODESET 1
  92 #endif
  93
  94 #ifdef U_NL_LANGINFO_CODESET
  95     /* Use the predefined value. */
  96 #elif !U_HAVE_NL_LANGINFO_CODESET
  97 #   define U_NL_LANGINFO_CODESET -1
  98 #elif U_PLATFORM == U_PF_OS400
  99    /* not defined */
 100 #else
 101 #   define U_NL_LANGINFO_CODESET CODESET
 102 #endif
 103
 104 #ifdef U_TZSET
 105     /* Use the predefined value. */
 106 #elif U_PLATFORM_USES_ONLY_WIN32_API
 107 #   define U_TZSET _tzset
 108 #elif U_PLATFORM == U_PF_OS400
 109    /* not defined */
 110 #else
 111 #   define U_TZSET tzset
 112 #endif
 113
 114 #if defined(U_TIMEZONE) || defined(U_HAVE_TIMEZONE)
 115     /* Use the predefined value. */
 116 #elif U_PLATFORM == U_PF_ANDROID
 117 #   define U_TIMEZONE timezone
 118 #elif U_PLATFORM_IS_LINUX_BASED
 119 #   if defined(__UCLIBC__)
 120        /* uClibc does not have __timezone or _timezone. */
 121 #   elif defined(_NEWLIB_VERSION)
 122 #      define U_TIMEZONE      _timezone
 123 #   elif defined(__GLIBC__)
 124        /* glibc */
 125 #      define U_TIMEZONE      __timezone
 126 #   endif
 127 #elif U_PLATFORM_USES_ONLY_WIN32_API
 128 #   define U_TIMEZONE _timezone
 129 #elif U_PLATFORM == U_PF_BSD && !defined(__NetBSD__)
 130    /* not defined */
 131 #elif U_PLATFORM == U_PF_OS400
 132    /* not defined */
 133 #elif U_PLATFORM == U_PF_IPHONE
 134    /* not defined */
 135 #else
 136 #   define U_TIMEZONE timezone
 137 #endif
 138
 139 #ifdef U_TZNAME
 140     /* Use the predefined value. */
 141 #elif U_PLATFORM_USES_ONLY_WIN32_API
 142 #   define U_TZNAME _tzname
 143 #elif U_PLATFORM == U_PF_OS400
 144    /* not defined */
 145 #else
 146 #   define U_TZNAME tzname
 147 #endif
 148
 149 #ifdef U_HAVE_MMAP
 150     /* Use the predefined value. */
 151 #elif U_PLATFORM_HAS_WIN32_API
 152 #   define U_HAVE_MMAP 0
 153 #else
 154 #   define U_HAVE_MMAP 1
 155 #endif
 156
 157 #ifdef U_HAVE_POPEN
 158     /* Use the predefined value. */
 159 #elif U_PLATFORM_USES_ONLY_WIN32_API
 160 #   define U_HAVE_POPEN 0
 161 #elif U_PLATFORM == U_PF_OS400
 162 #   define U_HAVE_POPEN 0
 163 #else
 164 #   define U_HAVE_POPEN 1
 165 #endif
 166
 167 /**
 168  * \def U_HAVE_DIRENT_H
 169  * Defines whether dirent.h is available.
 170  * @internal
 171  */
 172 #ifdef U_HAVE_DIRENT_H
 173     /* Use the predefined value. */
 174 #elif U_PLATFORM_HAS_WIN32_API
 175 #   define U_HAVE_DIRENT_H 0
 176 #else
 177 #   define U_HAVE_DIRENT_H 1
 178 #endif
 179
 180 /** @} */
 181
 182 /*===========================================================================*/
 183 /** @{ GCC built in functions for atomic memory operations                   */
 184 /*===========================================================================*/
 185
 186 /**
 187  * \def U_HAVE_GCC_ATOMICS
 188  * @internal
 189  */
 190 #ifdef U_HAVE_GCC_ATOMICS
 191     /* Use the predefined value. */
 192 #elif U_PLATFORM == U_PF_MINGW
 193     #define U_HAVE_GCC_ATOMICS 0
 194 #elif U_GCC_MAJOR_MINOR >= 404 || defined(__clang__)
 195     /* TODO: Intel icc and IBM xlc on AIX also support gcc atomics.  (Intel originated them.)
 196      *       Add them for these compilers.
 197      * Note: Clang sets __GNUC__ defines for version 4.2, so misses the 4.4 test here.
 198      */
 199 #   define U_HAVE_GCC_ATOMICS 1
 200 #else
 201 #   define U_HAVE_GCC_ATOMICS 0
 202 #endif
 203
 204 /** @} */
 205
 206 /**
 207  * \def U_HAVE_STD_ATOMICS
 208  * Defines whether the standard C++11 <atomic> is available.
 209  * ICU will use this when avialable,
 210  * otherwise will fall back to compiler or platform specific alternatives.
 211  * @internal
 212  */
 213 #ifdef U_HAVE_STD_ATOMICS
 214     /* Use the predefined value. */
 215 #elif U_CPLUSPLUS_VERSION < 11
 216     /* Not C++11, disable use of atomics */
 217 #   define U_HAVE_STD_ATOMICS 0
 218 #elif __clang__ && __clang_major__==3 && __clang_minor__<=1
 219     /* Clang 3.1, has atomic variable initializer bug. */
 220 #   define U_HAVE_STD_ATOMICS 0
 221 #else
 222     /* U_HAVE_ATOMIC is typically set by an autoconf test of #include <atomic>  */
 223     /*   Can be set manually, or left undefined, on platforms without autoconf. */
 224 #   if defined(U_HAVE_ATOMIC) &&  U_HAVE_ATOMIC
 225 #      define U_HAVE_STD_ATOMICS 1
 226 #   else
 227 #      define U_HAVE_STD_ATOMICS 0
 228 #   endif
 229 #endif
 230
 231
 232 /**
 233  *  \def U_HAVE_CLANG_ATOMICS
 234  *  Defines whether Clang c11 style built-in atomics are avaialable.
 235  *  These are used in preference to gcc atomics when both are available.
 236  */
 237 #ifdef U_HAVE_CLANG_ATOMICS
 238     /* Use the predefined value. */
 239 #elif __has_builtin(__c11_atomic_load) && \
 240     __has_builtin(__c11_atomic_store) && \
 241     __has_builtin(__c11_atomic_fetch_add) && \
 242     __has_builtin(__c11_atomic_fetch_sub)
 243 #    define U_HAVE_CLANG_ATOMICS 1
 244 #else
 245 #    define U_HAVE_CLANG_ATOMICS 0
 246 #endif
 247
 248 /*===========================================================================*/
 249 /** @{ Programs used by ICU code                                             */
 250 /*===========================================================================*/
 251
 252 /**
 253  * \def U_MAKE_IS_NMAKE
 254  * Defines whether the "make" program is Windows nmake.
 255  */
 256 #ifdef U_MAKE_IS_NMAKE
 257     /* Use the predefined value. */
 258 #elif U_PLATFORM == U_PF_WINDOWS
 259 #   define U_MAKE_IS_NMAKE 1
 260 #else
 261 #   define U_MAKE_IS_NMAKE 0
 262 #endif
 263
 264 /** @} */
 265
 266 /*==========================================================================*/
 267 /* Platform utilities                                                       */
 268 /*==========================================================================*/
 269
 270 /**
 271  * Platform utilities isolates the platform dependencies of the
 272  * libarary.  For each platform which this code is ported to, these
 273  * functions may have to be re-implemented.
 274  */
 275
 276 /**
 277  * Floating point utility to determine if a double is Not a Number (NaN).
 278  * @internal
 279  */
 280 U_INTERNAL UBool   U_EXPORT2 uprv_isNaN(double d);
 281 /**
 282  * Floating point utility to determine if a double has an infinite value.
 283  * @internal
 284  */
 285 U_INTERNAL UBool   U_EXPORT2 uprv_isInfinite(double d);
 286 /**
 287  * Floating point utility to determine if a double has a positive infinite value.
 288  * @internal
 289  */
 290 U_INTERNAL UBool   U_EXPORT2 uprv_isPositiveInfinity(double d);
 291 /**
 292  * Floating point utility to determine if a double has a negative infinite value.
 293  * @internal
 294  */
 295 U_INTERNAL UBool   U_EXPORT2 uprv_isNegativeInfinity(double d);
 296 /**
 297  * Floating point utility that returns a Not a Number (NaN) value.
 298  * @internal
 299  */
 300 U_INTERNAL double  U_EXPORT2 uprv_getNaN(void);
 301 /**
 302  * Floating point utility that returns an infinite value.
 303  * @internal
 304  */
 305 U_INTERNAL double  U_EXPORT2 uprv_getInfinity(void);
 306
 307 /**
 308  * Floating point utility to truncate a double.
 309  * @internal
 310  */
 311 U_INTERNAL double  U_EXPORT2 uprv_trunc(double d);
 312 /**
 313  * Floating point utility to calculate the floor of a double.
 314  * @internal
 315  */
 316 U_INTERNAL double  U_EXPORT2 uprv_floor(double d);
 317 /**
 318  * Floating point utility to calculate the ceiling of a double.
 319  * @internal
 320  */
 321 U_INTERNAL double  U_EXPORT2 uprv_ceil(double d);
 322 /**
 323  * Floating point utility to calculate the absolute value of a double.
 324  * @internal
 325  */
 326 U_INTERNAL double  U_EXPORT2 uprv_fabs(double d);
 327 /**
 328  * Floating point utility to calculate the fractional and integer parts of a double.
 329  * @internal
 330  */
 331 U_INTERNAL double  U_EXPORT2 uprv_modf(double d, double* pinteger);
 332 /**
 333  * Floating point utility to calculate the remainder of a double divided by another double.
 334  * @internal
 335  */
 336 U_INTERNAL double  U_EXPORT2 uprv_fmod(double d, double y);
 337 /**
 338  * Floating point utility to calculate d to the power of exponent (d^exponent).
 339  * @internal
 340  */
 341 U_INTERNAL double  U_EXPORT2 uprv_pow(double d, double exponent);
 342 /**
 343  * Floating point utility to calculate 10 to the power of exponent (10^exponent).
 344  * @internal
 345  */
 346 U_INTERNAL double  U_EXPORT2 uprv_pow10(int32_t exponent);
 347 /**
 348  * Floating point utility to calculate the maximum value of two doubles.
 349  * @internal
 350  */
 351 U_INTERNAL double  U_EXPORT2 uprv_fmax(double d, double y);
 352 /**
 353  * Floating point utility to calculate the minimum value of two doubles.
 354  * @internal
 355  */
 356 U_INTERNAL double  U_EXPORT2 uprv_fmin(double d, double y);
 357 /**
 358  * Private utility to calculate the maximum value of two integers.
 359  * @internal
 360  */
 361 U_INTERNAL int32_t U_EXPORT2 uprv_max(int32_t d, int32_t y);
 362 /**
 363  * Private utility to calculate the minimum value of two integers.
 364  * @internal
 365  */
 366 U_INTERNAL int32_t U_EXPORT2 uprv_min(int32_t d, int32_t y);
 367
 368 #if U_IS_BIG_ENDIAN
 369 #   define uprv_isNegative(number) (*((signed char *)&(number))<0)
 370 #else
 371 #   define uprv_isNegative(number) (*((signed char *)&(number)+sizeof(number)-1)<0)
 372 #endif
 373
 374 /**
 375  * Return the largest positive number that can be represented by an integer
 376  * type of arbitrary bit length.
 377  * @internal
 378  */
 379 U_INTERNAL double  U_EXPORT2 uprv_maxMantissa(void);
 380
 381 /**
 382  * Floating point utility to calculate the logarithm of a double.
 383  * @internal
 384  */
 385 U_INTERNAL double  U_EXPORT2 uprv_log(double d);
 386
 387 /**
 388  * Does common notion of rounding e.g. uprv_floor(x + 0.5);
 389  * @param x the double number
 390  * @return the rounded double
 391  * @internal
 392  */
 393 U_INTERNAL double  U_EXPORT2 uprv_round(double x);
 394
 395 #if 0
 396 /**
 397  * Returns the number of digits after the decimal point in a double number x.
 398  *
 399  * @param x the double number
 400  * @return the number of digits after the decimal point in a double number x.
 401  * @internal
 402  */
 403 /*U_INTERNAL int32_t  U_EXPORT2 uprv_digitsAfterDecimal(double x);*/
 404 #endif
 405
 406 #if !U_CHARSET_IS_UTF8
 407 /**
 408  * Please use ucnv_getDefaultName() instead.
 409  * Return the default codepage for this platform and locale.
 410  * This function can call setlocale() on Unix platforms. Please read the
 411  * platform documentation on setlocale() before calling this function.
 412  * @return the default codepage for this platform
 413  * @internal
 414  */
 415 U_INTERNAL const char*  U_EXPORT2 uprv_getDefaultCodepage(void);
 416 #endif
 417
 418 /**
 419  * Please use uloc_getDefault() instead.
 420  * Return the default locale ID string by querying ths system, or
 421  *     zero if one cannot be found.
 422  * This function can call setlocale() on Unix platforms. Please read the
 423  * platform documentation on setlocale() before calling this function.
 424  * @return the default locale ID string
 425  * @internal
 426  */
 427 U_INTERNAL const char*  U_EXPORT2 uprv_getDefaultLocaleID(void);
 428
 429 /**
 430  * Time zone utilities
 431  *
 432  * Wrappers for C runtime library functions relating to timezones.
 433  * The t_tzset() function (similar to tzset) uses the current setting
 434  * of the environment variable TZ to assign values to three global
 435  * variables: daylight, timezone, and tzname. These variables have the
 436  * following meanings, and are declared in &lt;time.h&gt;.
 437  *
 438  *   daylight   Nonzero if daylight-saving-time zone (DST) is specified
 439  *              in TZ; otherwise, 0. Default value is 1.
 440  *   timezone   Difference in seconds between coordinated universal
 441  *              time and local time. E.g., -28,800 for PST (GMT-8hrs)
 442  *   tzname(0)  Three-letter time-zone name derived from TZ environment
 443  *              variable. E.g., "PST".
 444  *   tzname(1)  Three-letter DST zone name derived from TZ environment
 445  *              variable.  E.g., "PDT". If DST zone is omitted from TZ,
 446  *              tzname(1) is an empty string.
 447  *
 448  * Notes: For example, to set the TZ environment variable to correspond
 449  * to the current time zone in Germany, you can use one of the
 450  * following statements:
 451  *
 452  *   set TZ=GST1GDT
 453  *   set TZ=GST+1GDT
 454  *
 455  * If the TZ value is not set, t_tzset() attempts to use the time zone
 456  * information specified by the operating system. Under Windows NT
 457  * and Windows 95, this information is specified in the Control Panel's
 458  * Date/Time application.
 459  * @internal
 460  */
 461 U_INTERNAL void     U_EXPORT2 uprv_tzset(void);
 462
 463 /**
 464  * Difference in seconds between coordinated universal
 465  * time and local time. E.g., -28,800 for PST (GMT-8hrs)
 466  * @return the difference in seconds between coordinated universal time and local time.
 467  * @internal
 468  */
 469 U_INTERNAL int32_t  U_EXPORT2 uprv_timezone(void);
 470
 471 /**
 472  *   tzname(0)  Three-letter time-zone name derived from TZ environment
 473  *              variable. E.g., "PST".
 474  *   tzname(1)  Three-letter DST zone name derived from TZ environment
 475  *              variable.  E.g., "PDT". If DST zone is omitted from TZ,
 476  *              tzname(1) is an empty string.
 477  * @internal
 478  */
 479 U_INTERNAL const char* U_EXPORT2 uprv_tzname(int n);
 480
 481 /**
 482  * Get UTC (GMT) time measured in milliseconds since 0:00 on 1/1/1970.
 483  * This function is affected by 'faketime' and should be the bottleneck for all user-visible ICU time functions.
 484  * @return the UTC time measured in milliseconds
 485  * @internal
 486  */
 487 U_INTERNAL UDate U_EXPORT2 uprv_getUTCtime(void);
 488
 489 /**
 490  * Get UTC (GMT) time measured in milliseconds since 0:00 on 1/1/1970.
 491  * This function is not affected by 'faketime', so it should only be used by low level test functions- not by anything that
 492  * exposes time to the end user.
 493  * @return the UTC time measured in milliseconds
 494  * @internal
 495  */
 496 U_INTERNAL UDate U_EXPORT2 uprv_getRawUTCtime(void);
 497
 498 /**
 499  * Determine whether a pathname is absolute or not, as defined by the platform.
 500  * @param path Pathname to test
 501  * @return TRUE if the path is absolute
 502  * @internal (ICU 3.0)
 503  */
 504 U_INTERNAL UBool U_EXPORT2 uprv_pathIsAbsolute(const char *path);
 505
 506 /**
 507  * Use U_MAX_PTR instead of this function.
 508  * @param void pointer to test
 509  * @return the largest possible pointer greater than the base
 510  * @internal (ICU 3.8)
 511  */
 512 U_INTERNAL void * U_EXPORT2 uprv_maximumPtr(void *base);
 513
 514 /**
 515  * Maximum value of a (void*) - use to indicate the limit of an 'infinite' buffer.
 516  * In fact, buffer sizes must not exceed 2GB so that the difference between
 517  * the buffer limit and the buffer start can be expressed in an int32_t.
 518  *
 519  * The definition of U_MAX_PTR must fulfill the following conditions:
 520  * - return the largest possible pointer greater than base
 521  * - return a valid pointer according to the machine architecture (AS/400, 64-bit, etc.)
 522  * - avoid wrapping around at high addresses
 523  * - make sure that the returned pointer is not farther from base than 0x7fffffff bytes
 524  *
 525  * @param base The beginning of a buffer to find the maximum offset from
 526  * @internal
 527  */
 528 #ifndef U_MAX_PTR
 529 #  if U_PLATFORM == U_PF_OS390 && !defined(_LP64)
 530     /* We have 31-bit pointers. */
 531 #    define U_MAX_PTR(base) ((void *)0x7fffffff)
 532 #  elif U_PLATFORM == U_PF_OS400
 533 #    define U_MAX_PTR(base) uprv_maximumPtr((void *)base)
 534 #  elif 0
 535     /*
 536      * For platforms where pointers are scalar values (which is normal, but unlike i5/OS)
 537      * but that do not define uintptr_t.
 538      *
 539      * However, this does not work on modern compilers:
 540      * The C++ standard does not define pointer overflow, and allows compilers to
 541      * assume that p+u>p for any pointer p and any integer u>0.
 542      * Thus, modern compilers optimize away the ">" comparison.
 543      * (See ICU tickets #7187 and #8096.)
 544      */
 545 #    define U_MAX_PTR(base) \
 546     ((void *)(((char *)(base)+0x7fffffffu) > (char *)(base) \
 547         ? ((char *)(base)+0x7fffffffu) \
 548         : (char *)-1))
 549 #  else
 550     /* Default version. C++ standard compliant for scalar pointers. */
 551 #    define U_MAX_PTR(base) \
 552     ((void *)(((uintptr_t)(base)+0x7fffffffu) > (uintptr_t)(base) \
 553         ? ((uintptr_t)(base)+0x7fffffffu) \
 554         : (uintptr_t)-1))
 555 #  endif
 556 #endif
 557
 558 /*  Dynamic Library Functions */
 559
 560 typedef void (UVoidFunction)(void);
 561
 562 #if U_ENABLE_DYLOAD
 563 /**
 564  * Load a library
 565  * @internal (ICU 4.4)
 566  */
 567 U_INTERNAL void * U_EXPORT2 uprv_dl_open(const char *libName, UErrorCode *status);
 568
 569 /**
 570  * Close a library
 571  * @internal (ICU 4.4)
 572  */
 573 U_INTERNAL void U_EXPORT2 uprv_dl_close( void *lib, UErrorCode *status);
 574
 575 /**
 576  * Extract a symbol from a library (function)
 577  * @internal (ICU 4.8)
 578  */
 579 U_INTERNAL UVoidFunction* U_EXPORT2 uprv_dlsym_func( void *lib, const char *symbolName, UErrorCode *status);
 580
 581 /**
 582  * Extract a symbol from a library (function)
 583  * Not implemented, no clients.
 584  * @internal
 585  */
 586 /* U_INTERNAL void * U_EXPORT2 uprv_dlsym_data( void *lib, const char *symbolName, UErrorCode *status); */
 587
 588 #endif
 589
 590 /**
 591  * Define malloc and related functions
 592  * @internal
 593  */
 594 #if U_PLATFORM == U_PF_OS400
 595 # define uprv_default_malloc(x) _C_TS_malloc(x)
 596 # define uprv_default_realloc(x,y) _C_TS_realloc(x,y)
 597 # define uprv_default_free(x) _C_TS_free(x)
 598 /* also _C_TS_calloc(x) */
 599 #else
 600 /* C defaults */
 601 # define uprv_default_malloc(x) malloc(x)
 602 # define uprv_default_realloc(x,y) realloc(x,y)
 603 # define uprv_default_free(x) free(x)
 604 #endif
 605
 606
 607 #endif