icuSources/i18n/utmscale.c

   1 /*
   2 *******************************************************************************
   3 * Copyright (C) 2004-2006, International Business Machines Corporation and
   4 * others. All Rights Reserved.
   5 *******************************************************************************
   6 */
   7
   8 #include "unicode/utypes.h"
   9
  10 #if !UCONFIG_NO_FORMATTING
  11
  12 #include "unicode/utmscale.h"
  13
  14 #define ticks        INT64_C(1)
  15 #define microseconds (ticks * 10)
  16 #define milliseconds (microseconds * 1000)
  17 #define seconds      (milliseconds * 1000)
  18 #define minutes      (seconds * 60)
  19 #define hours        (minutes * 60)
  20 #define days         (hours * 24)
  21
  22 /* Constants generated by ICU4J com.ibm.icu.dev.tool.timescale.GenerateCTimeScaleData. */
  23 static const int64_t timeScaleTable[UDTS_MAX_SCALE][UTSV_MAX_SCALE_VALUE] = {
  24   /*    units             epochOffset                     fromMin                        fromMax                            toMin                        toMax                    epochOffsetP1                epochOffsetM1              unitsRound                    minRound                     maxRound          */
  25     {milliseconds, INT64_C(62135596800000),     INT64_C(-984472800485477),     INT64_C(860201606885477),     INT64_C(-9223372036854774999), INT64_C(9223372036854774999), INT64_C(62135596800001),     INT64_C(62135596799999),     INT64_C(5000),         INT64_C(-9223372036854770808), INT64_C(9223372036854770807)},
  26     {seconds,      INT64_C(62135596800),        INT64_C(-984472800485),        INT64_C(860201606885),        U_INT64_MIN,                   U_INT64_MAX,                  INT64_C(62135596801),        INT64_C(62135596799),        INT64_C(5000000),      INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
  27     {milliseconds, INT64_C(62135596800000),     INT64_C(-984472800485477),     INT64_C(860201606885477),     INT64_C(-9223372036854774999), INT64_C(9223372036854774999), INT64_C(62135596800001),     INT64_C(62135596799999),     INT64_C(5000),         INT64_C(-9223372036854770808), INT64_C(9223372036854770807)},
  28     {ticks,        INT64_C(504911232000000000), U_INT64_MIN,                   INT64_C(8718460804854775807), INT64_C(-8718460804854775808), U_INT64_MAX,                  INT64_C(504911232000000000), INT64_C(504911232000000000), INT64_C(0),            U_INT64_MIN,                   U_INT64_MAX},
  29     {ticks,        INT64_C(0),                  U_INT64_MIN,                   U_INT64_MAX,                  U_INT64_MIN,                   U_INT64_MAX,                  INT64_C(0),                  INT64_C(0),                  INT64_C(0),            U_INT64_MIN,                   U_INT64_MAX},
  30     {seconds,      INT64_C(60052752000),        INT64_C(-982389955685),        INT64_C(862284451685),        U_INT64_MIN,                   U_INT64_MAX,                  INT64_C(60052752001),        INT64_C(60052751999),        INT64_C(5000000),      INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
  31     {seconds,      INT64_C(63113904000),        INT64_C(-985451107685),        INT64_C(859223299685),        U_INT64_MIN,                   U_INT64_MAX,                  INT64_C(63113904001),        INT64_C(63113903999),        INT64_C(5000000),      INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
  32     {days,         INT64_C(693594),             INT64_C(-11368793),            INT64_C(9981605),             U_INT64_MIN,                   U_INT64_MAX,                  INT64_C(693595),             INT64_C(693593),             INT64_C(432000000000), INT64_C(-9223371604854775808), INT64_C(9223371604854775807)},
  33     {days,         INT64_C(693594),             INT64_C(-11368793),            INT64_C(9981605),             U_INT64_MIN,                   U_INT64_MAX,                  INT64_C(693595),             INT64_C(693593),             INT64_C(432000000000), INT64_C(-9223371604854775808), INT64_C(9223371604854775807)},
  34 };
  35
  36 U_CAPI int64_t U_EXPORT2
  37 utmscale_getTimeScaleValue(UDateTimeScale timeScale, UTimeScaleValue value, UErrorCode *status)
  38 {
  39     if (status == NULL || U_FAILURE(*status)) {
  40         return 0;
  41     }
  42
  43     if (timeScale < UDTS_JAVA_TIME || UDTS_MAX_SCALE <= timeScale
  44         || value < UTSV_UNITS_VALUE || UTSV_MAX_SCALE_VALUE <= value)
  45     {
  46         *status = U_ILLEGAL_ARGUMENT_ERROR;
  47         return 0;
  48     }
  49
  50     return timeScaleTable[timeScale][value];
  51 }
  52
  53 U_CAPI int64_t U_EXPORT2
  54 utmscale_fromInt64(int64_t otherTime, UDateTimeScale timeScale, UErrorCode *status)
  55 {
  56     const int64_t *data;
  57
  58     if (status == NULL || U_FAILURE(*status)) {
  59         return 0;
  60     }
  61
  62     if (timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
  63         *status = U_ILLEGAL_ARGUMENT_ERROR;
  64         return 0;
  65     }
  66
  67     data = (const int64_t *)(&timeScaleTable[timeScale]);
  68
  69     if (otherTime < data[UTSV_FROM_MIN_VALUE] || otherTime > data[UTSV_FROM_MAX_VALUE]) {
  70         *status = U_ILLEGAL_ARGUMENT_ERROR;
  71         return 0;
  72     }
  73
  74     return (otherTime + data[UTSV_EPOCH_OFFSET_VALUE]) * data[UTSV_UNITS_VALUE];
  75 }
  76
  77 U_CAPI int64_t U_EXPORT2
  78 utmscale_toInt64(int64_t universalTime, UDateTimeScale timeScale, UErrorCode *status)
  79 {
  80     const int64_t *data;
  81
  82     if (status == NULL || U_FAILURE(*status)) {
  83         return 0;
  84     }
  85
  86     if (timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
  87         *status = U_ILLEGAL_ARGUMENT_ERROR;
  88         return 0;
  89     }
  90
  91     data = (const int64_t *)(&timeScaleTable[timeScale]);
  92
  93     if (universalTime < data[UTSV_TO_MIN_VALUE] || universalTime > data[UTSV_TO_MAX_VALUE]) {
  94         *status = U_ILLEGAL_ARGUMENT_ERROR;
  95         return 0;
  96     }
  97
  98     if (universalTime < 0) {
  99         if (universalTime < data[UTSV_MIN_ROUND_VALUE]) {
 100             return (universalTime + data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_PLUS_1_VALUE];
 101         }
 102
 103         return (universalTime - data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_VALUE];
 104     }
 105
 106     if (universalTime > data[UTSV_MAX_ROUND_VALUE]) {
 107         return (universalTime - data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_MINUS_1_VALUE];
 108     }
 109
 110     return (universalTime + data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_VALUE];
 111 }
 112
 113 #endif /* #if !UCONFIG_NO_FORMATTING */