/* ******************************************************************************* * * * COPYRIGHT: * * (C) Copyright Taligent, Inc., 1997 * * (C) Copyright International Business Machines Corporation, 1997-1998 * * Licensed Material - Program-Property of IBM - All Rights Reserved. * * US Government Users Restricted Rights - Use, duplication, or disclosure * * restricted by GSA ADP Schedule Contract with IBM Corp. * * * ******************************************************************************* * * FILE NAME : putil.c (previously putil.cpp and ptypes.cpp) * * Date Name Description * 04/14/97 aliu Creation. * 04/24/97 aliu Added getDefaultDataDirectory() and * getDefaultLocaleID(). * 04/28/97 aliu Rewritten to assume Unix and apply general methods * for assumed case. Non-UNIX platforms must be * special-cased. Rewrote numeric methods dealing * with NaN and Infinity to be platform independent * over all IEEE 754 platforms. * 05/13/97 aliu Restored sign of timezone * (semantics are hours West of GMT) * 06/16/98 erm Added IEEE_754 stuff, cleaned up isInfinite, isNan, * nextDouble.. * 07/22/98 stephen Added remainder, max, min, trunc * 08/13/98 stephen Added isNegativeInfinity, isPositiveInfinity * 08/24/98 stephen Added longBitsFromDouble * 09/08/98 stephen Minor changes for Mac Port * 03/02/99 stephen Removed openFile(). Added AS400 support. * Fixed EBCDIC tables * 04/15/99 stephen Converted to C. * 06/28/99 stephen Removed mutex locking in u_isBigEndian(). * 08/04/99 jeffrey R. Added OS/2 changes ******************************************************************************* */ #include #include #include #include #include #include #include "utypes.h" #include "umutex.h" #include "cmemory.h" #include "cstring.h" #ifdef AS400 #include #endif #ifdef XP_MAC #include "Files.h" #include "IntlResources.h" #include "Script.h" #endif #ifdef WIN32 #include "locmap.h" #include #include #endif /* We return QNAN rather than SNAN*/ #define NAN_TOP ((int16_t)0x7FF8) #define INF_TOP ((int16_t)0x7FF0) #define SIGN 0x80000000L static char DEFAULT_CONVERTER_NAME[60] = ""; static char tempString[10] = ""; /* statics */ static bool_t fgNaNInitialized = FALSE; static double fgNan; static bool_t fgInfInitialized = FALSE; static double fgInf; /* protos */ static char* u_topNBytesOfDouble(double* d, int n); static char* u_bottomNBytesOfDouble(double* d, int n); /*--------------------------------------------------------------------------- Platform utilities Our general strategy is to assume we're on a POSIX platform. Platforms which are non-POSIX must declare themselves so. The default POSIX implementation will sometimes work for non-POSIX platforms as well (e.g., the NaN-related functions). ---------------------------------------------------------------------------*/ /* Assume POSIX, and modify as necessary below*/ #define POSIX #if defined(_WIN32) || defined(XP_MAC) || defined(AS400) || defined(OS2) #undef POSIX #endif /*--------------------------------------------------------------------------- Universal Implementations These are designed to work on all platforms. Try these, and if they don't work on your platform, then special case your platform with new implementations. ---------------------------------------------------------------------------*/ /* Get UTC (GMT) time measured in seconds since 0:00 on 1/1/70.*/ int32_t icu_getUTCtime() { #ifdef XP_MAC time_t t, t1, t2; struct tm tmrec; memset( &tmrec, 0, sizeof(tmrec) ); tmrec.tm_year = 70; tmrec.tm_mon = 0; tmrec.tm_mday = 1; t1 = mktime(&tmrec); /* seconds of 1/1/1970*/ time(&t); memcpy( &tmrec, gmtime(&t), sizeof(tmrec) ); t2 = mktime(&tmrec); /* seconds of current GMT*/ return t2 - t1; /* GMT (or UTC) in seconds since 1970*/ #else time_t epochtime; time(&epochtime); return epochtime; #endif } bool_t icu_isBigEndian() { union { int16_t fShort; int8_t fChars[2]; } testPattern; testPattern.fShort = 0x1234; return (testPattern.fChars[0] == 0x12); } /*----------------------------------------------------------------------------- IEEE 754 These methods detect and return NaN and infinity values for doubles conforming to IEEE 754. Platforms which support this standard include X86, Mac 680x0, Mac PowerPC, AIX RS/6000, and most others. If this doesn't work on your platform, you have non-IEEE floating-point, and will need to code your own versions. A naive implementation is to return 0.0 for getNaN and getInfinity, and false for isNaN and isInfinite. ---------------------------------------------------------------------------*/ bool_t icu_isNaN(double number) { #ifdef IEEE_754 /* This should work in theory, but it doesn't, so we resort to the more*/ /* complicated method below.*/ /* return number != number;*/ /* You can't return number == getNaN() because, by definition, NaN != x for*/ /* all x, including NaN (that is, NaN != NaN). So instead, we compare*/ /* against the known bit pattern. We must be careful of endianism here.*/ /* The pattern we are looking for id:*/ /* 7FFy yyyy yyyy yyyy (some y non-zero)*/ /* There are two different kinds of NaN, but we ignore the distinction*/ /* here. Note that the y value must be non-zero; if it is zero, then we*/ /* have infinity.*/ uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number, sizeof(uint32_t)); uint32_t lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&number, sizeof(uint32_t)); return ((highBits & 0x7FF00000L) == 0x7FF00000L) && (((highBits & 0x000FFFFFL) != 0) || (lowBits != 0)); #else /* If your platform doesn't support IEEE 754 but *does* have an NaN value,*/ /* you'll need to replace this default implementation with what's correct*/ /* for your platform.*/ return number != number; #endif } bool_t icu_isInfinite(double number) { #ifdef IEEE_754 /* We know the top bit is the sign bit, so we mask that off in a copy of */ /* the number and compare against infinity. [LIU]*/ /* The following approach doesn't work for some reason, so we go ahead and */ /* scrutinize the pattern itself. */ /* double a = number; */ /* *(int8_t*)u_topNBytesOfDouble(&a, 1) &= 0x7F;*/ /* return a == icu_getInfinity();*/ /* Instead, We want to see either:*/ /* 7FF0 0000 0000 0000*/ /* FFF0 0000 0000 0000*/ uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number, sizeof(uint32_t)); uint32_t lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&number, sizeof(uint32_t)); return ((highBits & ~SIGN) == 0x7FF00000L) && (lowBits == 0x00000000L); #else /* If your platform doesn't support IEEE 754 but *does* have an infinity*/ /* value, you'll need to replace this default implementation with what's*/ /* correct for your platform.*/ return number == (2.0 * number); #endif } bool_t icu_isPositiveInfinity(double number) { #ifdef IEEE_754 return (number > 0 && icu_isInfinite(number)); #else return icu_isInfinite(number); #endif } bool_t icu_isNegativeInfinity(double number) { #ifdef IEEE_754 return (number < 0 && icu_isInfinite(number)); #else return icu_isInfinite(number); #endif } double icu_getNaN() { #ifdef IEEE_754 if( ! fgNaNInitialized) { umtx_lock(NULL); if( ! fgNaNInitialized) { int i; int8_t* p = (int8_t*)&fgNan; for(i = 0; i < sizeof(double); ++i) *p++ = 0; *(int16_t*)u_topNBytesOfDouble(&fgNan, sizeof(NAN_TOP)) = NAN_TOP; fgNaNInitialized = TRUE; } umtx_unlock(NULL); } return fgNan; #else /* If your platform doesn't support IEEE 754 but *does* have an NaN value,*/ /* you'll need to replace this default implementation with what's correct*/ /* for your platform.*/ return 0.0; #endif } double icu_getInfinity() { #ifdef IEEE_754 if (!fgInfInitialized) { int i; int8_t* p = (int8_t*)&fgInf; for(i = 0; i < sizeof(double); ++i) *p++ = 0; *(int16_t*)u_topNBytesOfDouble(&fgInf, sizeof(INF_TOP)) = INF_TOP; fgInfInitialized = TRUE; } return fgInf; #else /* If your platform doesn't support IEEE 754 but *does* have an infinity*/ /* value, you'll need to replace this default implementation with what's*/ /* correct for your platform.*/ return 0.0; #endif } double icu_floor(double x) { return floor(x); } double icu_ceil(double x) { return ceil(x); } double icu_fabs(double x) { return fabs(x); } double icu_modf(double x, double* y) { return modf(x, y); } double icu_fmod(double x, double y) { return fmod(x, y); } double icu_pow10(int32_t x) { #ifdef XP_MAC return pow(10.0, (double)x); #else return pow(10.0, x); #endif } double icu_IEEEremainder(double x, double p) { #ifdef IEEE_754 int32_t hx, hp; uint32_t sx, lx, lp; double p_half; hx = *(int32_t*)u_topNBytesOfDouble(&x, sizeof(int32_t)); lx = *(uint32_t*)u_bottomNBytesOfDouble(&x, sizeof(uint32_t)); hp = *(int32_t*)u_topNBytesOfDouble(&p, sizeof(int32_t)); lp = *(uint32_t*)u_bottomNBytesOfDouble(&p, sizeof(uint32_t)); sx = hx & SIGN; hp &= 0x7fffffff; hx &= 0x7fffffff; /* purge off exception values */ if((hp|lp) == 0) return (x*p) / (x*p); /* p = 0 */ if((hx >= 0x7ff00000)|| /* x not finite */ ((hp>=0x7ff00000) && /* p is NaN */ (((hp-0x7ff00000)|lp) != 0))) return (x*p) / (x*p); if(hp <= 0x7fdfffff) x = icu_fmod(x, p + p); /* now x < 2p */ if(((hx-hp)|(lx-lp)) == 0) return 0.0 * x; x = icu_fabs(x); p = icu_fabs(p); if (hp < 0x00200000) { if(x + x > p) { x -= p; if(x + x >= p) x -= p; } } else { p_half = 0.5 * p; if(x > p_half) { x -= p; if(x >= p_half) x -= p; } } *(int32_t*)u_topNBytesOfDouble(&x, sizeof(int32_t)) ^= sx; return x; #else /* {sfb} need to fix this*/ return icu_fmod(x, p); #endif } double icu_fmax(double x, double y) { #ifdef IEEE_754 int32_t lowBits; /* first handle NaN*/ if(icu_isNaN(x) || icu_isNaN(y)) return icu_getNaN(); /* check for -0 and 0*/ lowBits = *(uint32_t*) u_bottomNBytesOfDouble(&x, sizeof(uint32_t)); if(x == 0.0 && y == 0.0 && (lowBits & SIGN)) return y; return (x > y ? x : y); #else /* {sfb} fix this*/ return x; #endif } int32_t icu_max(int32_t x, int32_t y) { return (x > y ? x : y); } double icu_fmin(double x, double y) { #ifdef IEEE_754 int32_t lowBits; /* first handle NaN*/ if(icu_isNaN(x) || icu_isNaN(y)) return icu_getNaN(); /* check for -0 and 0*/ lowBits = *(uint32_t*) u_bottomNBytesOfDouble(&y, sizeof(uint32_t)); if(x == 0.0 && y == 0.0 && (lowBits & SIGN)) return y; return (x > y ? y : x); #else /* {sfb} fix this*/ return x; #endif } int32_t icu_min(int32_t x, int32_t y) { return (x > y ? y : x); } /** * Truncates the given double. * trunc(3.3) = 3.0, trunc (-3.3) = -3.0 * This is different than calling floor() or ceil(): * floor(3.3) = 3, floor(-3.3) = -4 * ceil(3.3) = 4, ceil(-3.3) = -3 */ double icu_trunc(double d) { #ifdef IEEE_754 int32_t lowBits; /* handle error cases*/ if(icu_isNaN(d)) return icu_getNaN(); if(icu_isInfinite(d)) return icu_getInfinity(); lowBits = *(uint32_t*) u_bottomNBytesOfDouble(&d, sizeof(uint32_t)); if( (d == 0.0 && (lowBits & SIGN)) || d < 0) return ceil(d); else return floor(d); #else return d >= 0 ? floor(d) : ceil(d); #endif } void icu_longBitsFromDouble(double d, int32_t *hi, uint32_t *lo) { *hi = *(int32_t*)u_topNBytesOfDouble(&d, sizeof(int32_t)); *lo = *(uint32_t*)u_bottomNBytesOfDouble(&d, sizeof(uint32_t)); } /** * Return the floor of the log base 10 of a given double. * This method compensates for inaccuracies which arise naturally when * computing logs, and always give the correct value. The parameter * must be positive and finite. * (Thanks to Alan Liu for supplying this function.) */ int16_t icu_log10(double d) { /* The reason this routine is needed is that simply taking the*/ /* log and dividing by log10 yields a result which may be off*/ /* by 1 due to rounding errors. For example, the naive log10*/ /* of 1.0e300 taken this way is 299, rather than 300.*/ double log10 = log(d) / log(10.0); int16_t ilog10 = (int16_t)floor(log10); /* Positive logs could be too small, e.g. 0.99 instead of 1.0*/ if (log10 > 0 && d >= pow(10.0, ilog10 + 1)) ++ilog10; /* Negative logs could be too big, e.g. -0.99 instead of -1.0*/ else if (log10 < 0 && d < pow(10.0, ilog10)) --ilog10; return ilog10; } int32_t icu_digitsAfterDecimal(double x) { char buffer[20]; int16_t numDigits; char *p; int16_t ptPos, exponent; /* negative numbers throw off the calculations*/ x = fabs(x); /* cheat and use the string-format routine to get a string representation*/ /* (it handles mathematical inaccuracy better than we can), then find out */ /* many characters are to the right of the decimal point */ sprintf(buffer, "%.9g", x); p = icu_strchr(buffer, '.'); if (p == 0) return 0; ptPos = p - buffer; numDigits = strlen(buffer) - ptPos - 1; /* if the number's string representation is in scientific notation, find */ /* the exponent and take it into account*/ exponent = 0; p = icu_strchr(buffer, 'e'); if (p != 0) { int16_t expPos = p - buffer; numDigits -= strlen(buffer) - expPos; exponent = atoi(p + 1); } /* the string representation may still have spurious decimal digits in it, */ /* so we cut off at the ninth digit to the right of the decimal, and have */ /* to search backward from there to the first non-zero digit*/ if (numDigits > 9) { numDigits = 9; while (numDigits > 0 && buffer[ptPos + numDigits] == '0') --numDigits; } numDigits -= exponent; return numDigits; } /*--------------------------------------------------------------------------- Platform-specific Implementations Try these, and if they don't work on your platform, then special case your platform with new implementations. ---------------------------------------------------------------------------*/ /* Time zone utilities */ void icu_tzset() { #ifdef POSIX tzset(); #endif #if defined(AS400) || defined(XP_MAC) /* no initialization*/ #endif #if defined(WIN32) || defined(OS2) _tzset(); #endif } int32_t icu_timezone() { #ifdef POSIX return timezone; #endif #if defined(AS400) || defined(XP_MAC) time_t t, t1, t2; struct tm tmrec; bool_t dst_checked; time(&t); memcpy( &tmrec, localtime(&t), sizeof(tmrec) ); dst_checked = (tmrec.tm_isdst != 0); /* daylight savings time is checked*/ t1 = mktime(&tmrec); /* local time in seconds*/ memcpy( &tmrec, gmtime(&t), sizeof(tmrec) ); t2 = mktime(&tmrec); /* GMT (or UTC) in seconds*/ int32_t tdiff = t2 - t1; /* imitate NT behaviour, which returns same timezone offset to GMT for winter and summer*/ if (dst_checked) tdiff += 3600; return tdiff; #endif #if defined(WIN32) || defined(OS2) return _timezone; #endif } char* icu_tzname(int index) { #ifdef POSIX return tzname[index]; #endif #if defined(AS400) || defined(XP_MAC) return ""; #endif #if defined(WIN32) || defined(OS2) return _tzname[index]; #endif } const char* icu_getDefaultDataDirectory() { #ifdef POSIX static char *PATH = 0; if(PATH == 0) { umtx_lock(NULL); if(PATH == 0) { /* Normally, the locale and converter data will be installed in the same tree as the ICU libraries - typically /usr/local/lib for the libraries, /usr/local/include for the headers, and /usr/local/share for the binary data. However, the directory where the ICU looks for the binary data can be overridden by setting the environment variable ICU_DATA */ char *dir = getenv("ICU_DATA"); /* If the environment variable is set, use it */ if(dir != 0) { PATH = dir; } /* Otherwise, use the compiled in default */ else { PATH = ICU_DATA_DIR; } } umtx_unlock(NULL); } return PATH; #endif #ifdef AS400 return "/icu/data/"; #endif #ifdef XP_MAC static char path[256]; char* mainDir; char* relPath = ":icu:data:"; Str255 volName; int16_t volNum; OSErr err = GetVol( volName, &volNum ); if (err != noErr) volName[0] = 0; mainDir = (char*) &(volName[1]); mainDir[volName[0]] = 0; int32_t lenMainDir = strlen( mainDir ); int32_t lenRelPath = strlen( relPath ); if (sizeof(path) < lenMainDir + lenRelPath + 2) { path[0] = 0; return path; } icu_strcpy( path, mainDir ); icu_strcat( path, relPath ); return path; #endif #ifdef WIN32 return "\\icu\\data\\"; #endif #ifdef OS2 char * dpath; dpath = getenv("ICUPATH"); if (!dpath || !*dpath) return "\\icu\\data\\"; return dpath; #endif } /* Macintosh-specific locale information */ #ifdef XP_MAC struct mac_lc_rec { int32_t script; int32_t region; int32_t lang; int32_t date_region; char* posixID; }; /* To do: This will be updated with a newer version from www.unicode.org web page when it's available.*/ #define MAC_LC_MAGIC_NUMBER -5 #define MAC_LC_INIT_NUMBER -9 mac_lc_rec mac_lc_recs[] = { MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 0, "en_US", /* United States*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 1, "fr_FR", /* France*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 2, "en_GB", /* Great Britain*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 3, "de_DE", /* Germany*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 4, "it_IT", /* Italy*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 5, "nl_NL", /* Metherlands*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 6, "fr_BE", /* French for Belgium or Lxembourg*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 7, "sv_SE", /* Sweden*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 9, "da_DK", /* Denmark*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 10, "pt_PT", /* Portugal*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 11, "fr_CA", /* French Canada*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 13, "is_IS", /* Israel*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 14, "ja_JP", /* Japan*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 15, "en_AU", /* Australia*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 16, "ar_AE", /* the Arabic world (?)*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 17, "fi_FI", /* Finland*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 18, "fr_CH", /* French for Switzerland*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 19, "de_CH", /* German for Switzerland*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 20, "EL_GR", /* Greece*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 21, "is_IS", /* Iceland ===*/ /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 22, "", // Malta ===*/ /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 23, "", // Cyprus ===*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 24, "tr_TR", /* Turkey ===*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 25, "sh_YU", /* Croatian system for Yugoslavia*/ /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 33, "", // Hindi system for India*/ /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 34, "", // Pakistan*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 41, "lt_LT", /* Lithuania*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 42, "pl_PL", /* Poland*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 43, "hu_HU", /* Hungary*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 44, "et_EE", /* Estonia*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 45, "lv_LV", /* Latvia*/ /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 46, "", // Lapland [Ask Rich for the data. HS]*/ /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 47, "", // Faeroe Islands*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 48, "fa_IR", /* Iran*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 49, "ru_RU", /* Russia*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 50, "en_IE", /* Ireland*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 51, "ko_KR", /* Korea*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 52, "zh_CN", /* People's Republic of China*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 53, "zh_TW", /* Taiwan*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 54, "th_TH", /* Thailand*/ /* fallback is en_US*/ MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, "en_US" }; #endif const char* icu_getDefaultLocaleID() { #ifdef POSIX char* posixID = getenv("LC_ALL"); if (posixID == 0) posixID = getenv("LANG"); if (posixID == 0) posixID = setlocale(LC_ALL, NULL); if (icu_strcmp("C", posixID) == 0) posixID = "en_US"; return posixID; #endif #ifdef AS400 /* TBD */ return ""; #endif #ifdef XP_MAC int32_t script = MAC_LC_INIT_NUMBER; /* = IntlScript(); or GetScriptManagerVariable(smSysScript);*/ int32_t region = MAC_LC_INIT_NUMBER; /* = GetScriptManagerVariable(smRegionCode);*/ int32_t lang = MAC_LC_INIT_NUMBER; /* = GetScriptManagerVariable(smScriptLang);*/ int32_t date_region = MAC_LC_INIT_NUMBER; char* posixID = 0; Intl1Hndl ih; ih = (Intl1Hndl) GetIntlResource(1); if (ih) date_region = ((uint16_t)(*ih)->intl1Vers) >> 8; int32_t count = sizeof(mac_lc_recs) / sizeof(mac_lc_rec); for (int32_t i = 0; i < count; i++) { if ( ((mac_lc_recs[i].script == MAC_LC_MAGIC_NUMBER) || (mac_lc_recs[i].script == script)) && ((mac_lc_recs[i].region == MAC_LC_MAGIC_NUMBER) || (mac_lc_recs[i].region == region)) && ((mac_lc_recs[i].lang == MAC_LC_MAGIC_NUMBER) || (mac_lc_recs[i].lang == lang)) && ((mac_lc_recs[i].date_region == MAC_LC_MAGIC_NUMBER) || (mac_lc_recs[i].date_region == date_region)) ) { posixID = mac_lc_recs[i].posixID; break; } } return posixID; #endif #ifdef WIN32 LCID id = GetThreadLocale(); return T_convertToPosix(id); #endif #ifdef OS2 char * locID; locID = getenv("LC_ALL"); if (!locID || !*locID) locID = getenv("LANG"); if (!locID || !*locID) { locID = "C"; } if (!stricmp(locID, "c") || !stricmp(locID, "posix") || !stricmp(locID, "univ")) locID = "en_US"; return locID; #endif } /* end of platform-specific implementation */ double icu_nextDouble(double d, bool_t next) { #ifdef IEEE_754 int32_t highBits; uint32_t lowBits; int32_t highMagnitude; uint32_t lowMagnitude; double result; uint32_t *highResult, *lowResult; uint32_t signBit; /* filter out NaN's */ if (icu_isNaN(d)) { return d; } /* zero's are also a special case */ if (d == 0.0) { double smallestPositiveDouble = 0.0; uint32_t *lowBits = (uint32_t *)u_bottomNBytesOfDouble(&smallestPositiveDouble, sizeof(uint32_t)); *lowBits = 1; if (next) { return smallestPositiveDouble; } else { return -smallestPositiveDouble; } } /* if we get here, d is a nonzero value */ /* hold all bits for later use */ highBits = *(int32_t*)u_topNBytesOfDouble(&d, sizeof(uint32_t)); lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&d, sizeof(uint32_t)); /* strip off the sign bit */ highMagnitude = highBits & ~SIGN; lowMagnitude = lowBits; /* if next double away from zero, increase magnitude */ if ((highBits >= 0) == next) { if (highMagnitude != 0x7FF00000L || lowMagnitude != 0x00000000L) { lowMagnitude += 1; if (lowMagnitude == 0) { highMagnitude += 1; } } } /* else decrease magnitude */ else { lowMagnitude -= 1; if (lowMagnitude > lowBits) { highMagnitude -= 1; } } /* construct result and return */ signBit = highBits & SIGN; highResult = (uint32_t *)u_topNBytesOfDouble(&result, sizeof(uint32_t)); lowResult = (uint32_t *)u_bottomNBytesOfDouble(&result, sizeof(uint32_t)); *highResult = signBit | highMagnitude; *lowResult = lowMagnitude; return result; #else /* This is the portable implementation...*/ /* a small coefficient within the precision of the mantissa*/ static const double smallValue = 1e-10; double epsilon = ((d<0)?-d:d) * smallValue; /* first approximation*/ if (epsilon == 0) epsilon = smallValue; /* for very small d's*/ if (!next) epsilon = -epsilon; double last_eps = epsilon * 2.0; /* avoid higher precision possibly used for temporay values*/ double sum = d + epsilon; while ((sum != d) && (epsilon != last_eps)) { last_eps = epsilon; epsilon /= 2.0; sum = d + epsilon; } return d + last_eps; #endif } static char* u_topNBytesOfDouble(double* d, int n) { return icu_isBigEndian() ? (char*)d : (char*)(d + 1) - n; } static char* u_bottomNBytesOfDouble(double* d, int n) { return icu_isBigEndian() ? (char*)(d + 1) - n : (char*)d; } const char* icu_getDefaultCodepage() { /*Lazy evaluates DEFAULT_CONVERTER_NAME*/ if (DEFAULT_CONVERTER_NAME[0]) return DEFAULT_CONVERTER_NAME; #if defined(AS400) /* Currently TBD in the future should use thread specific CP */ #elif defined(OS390) icu_strcpy(DEFAULT_CONVERTER_NAME, "ibm-1047"); #elif defined(XP_MAC) /* TBD */ #elif defined(WIN32) icu_strcpy(DEFAULT_CONVERTER_NAME, "cp"); icu_strcat(DEFAULT_CONVERTER_NAME, _itoa(GetACP(), tempString, 10)); #elif defined(POSIX) icu_strcpy(DEFAULT_CONVERTER_NAME, "LATIN_1"); #else icu_strcpy(DEFAULT_CONVERTER_NAME, "LATIN_1"); #endif return DEFAULT_CONVERTER_NAME; }