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      1 /*
      2 *******************************************************************************
      3 * Copyright (C) 2004-2012, 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     {microseconds, INT64_C(62135596800000000),  INT64_C(-984472800485477580),  INT64_C(860201606885477580),  INT64_C(-9223372036854775804), INT64_C(9223372036854775804), INT64_C(62135596800000001),  INT64_C(62135596799999999),  INT64_C(5),            INT64_C(-9223372036854775803), INT64_C(9223372036854775802)},
     35 };
     36 
     37 U_CAPI int64_t U_EXPORT2
     38 utmscale_getTimeScaleValue(UDateTimeScale timeScale, UTimeScaleValue value, UErrorCode *status)
     39 {
     40     if (status == NULL || U_FAILURE(*status)) {
     41         return 0;
     42     }
     43 
     44     if (timeScale < UDTS_JAVA_TIME || UDTS_MAX_SCALE <= timeScale
     45         || value < UTSV_UNITS_VALUE || UTSV_MAX_SCALE_VALUE <= value)
     46     {
     47         *status = U_ILLEGAL_ARGUMENT_ERROR;
     48         return 0;
     49     }
     50 
     51     return timeScaleTable[timeScale][value];
     52 }
     53 
     54 U_CAPI int64_t U_EXPORT2
     55 utmscale_fromInt64(int64_t otherTime, UDateTimeScale timeScale, UErrorCode *status)
     56 {
     57     const int64_t *data;
     58 
     59     if (status == NULL || U_FAILURE(*status)) {
     60         return 0;
     61     }
     62 
     63     if ((int32_t)timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
     64         *status = U_ILLEGAL_ARGUMENT_ERROR;
     65         return 0;
     66     }
     67 
     68     data = (const int64_t *)(&timeScaleTable[timeScale]);
     69 
     70     if (otherTime < data[UTSV_FROM_MIN_VALUE] || otherTime > data[UTSV_FROM_MAX_VALUE]) {
     71         *status = U_ILLEGAL_ARGUMENT_ERROR;
     72         return 0;
     73     }
     74 
     75     return (otherTime + data[UTSV_EPOCH_OFFSET_VALUE]) * data[UTSV_UNITS_VALUE];
     76 }
     77 
     78 U_CAPI int64_t U_EXPORT2
     79 utmscale_toInt64(int64_t universalTime, UDateTimeScale timeScale, UErrorCode *status)
     80 {
     81     const int64_t *data;
     82 
     83     if (status == NULL || U_FAILURE(*status)) {
     84         return 0;
     85     }
     86 
     87     if ((int32_t)timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
     88         *status = U_ILLEGAL_ARGUMENT_ERROR;
     89         return 0;
     90     }
     91 
     92     data = (const int64_t *)(&timeScaleTable[timeScale]);
     93 
     94     if (universalTime < data[UTSV_TO_MIN_VALUE] || universalTime > data[UTSV_TO_MAX_VALUE]) {
     95         *status = U_ILLEGAL_ARGUMENT_ERROR;
     96         return 0;
     97     }
     98 
     99     if (universalTime < 0) {
    100         if (universalTime < data[UTSV_MIN_ROUND_VALUE]) {
    101             return (universalTime + data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_PLUS_1_VALUE];
    102         }
    103 
    104         return (universalTime - data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_VALUE];
    105     }
    106 
    107     if (universalTime > data[UTSV_MAX_ROUND_VALUE]) {
    108         return (universalTime - data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_MINUS_1_VALUE];
    109     }
    110 
    111     return (universalTime + data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_VALUE];
    112 }
    113 
    114 #endif /* #if !UCONFIG_NO_FORMATTING */
    115