icuSources/i18n/utmscale.cpp

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 *******************************************************************************
   5 * Copyright (C) 2004-2012, International Business Machines Corporation and
   6 * others. All Rights Reserved.
   7 *******************************************************************************
   8 */
   9
  10 #include "unicode/utypes.h"
  11
  12 #if !UCONFIG_NO_FORMATTING
  13
  14 #include "unicode/utmscale.h"
  15
  16 #define ticks        INT64_C(1)
  17 #define microseconds (ticks * 10)
  18 #define milliseconds (microseconds * 1000)
  19 #define seconds      (milliseconds * 1000)
  20 #define minutes      (seconds * 60)
  21 #define hours        (minutes * 60)
  22 #define days         (hours * 24)
  23
  24 /* Constants generated by ICU4J com.ibm.icu.dev.tool.timescale.GenerateCTimeScaleData. */
  25 static const int64_t timeScaleTable[UDTS_MAX_SCALE][UTSV_MAX_SCALE_VALUE] = {
  26   /*    units             epochOffset                     fromMin                        fromMax                            toMin                        toMax                    epochOffsetP1                epochOffsetM1              unitsRound                    minRound                     maxRound          */
  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     {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)},
  29     {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)},
  30     {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},
  31     {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},
  32     {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)},
  33     {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)},
  34     {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)},
  35     {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)},
  36     {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)},
  37 };
  38
  39 U_CAPI int64_t U_EXPORT2
  40 utmscale_getTimeScaleValue(UDateTimeScale timeScale, UTimeScaleValue value, UErrorCode *status)
  41 {
  42     if (status == NULL || U_FAILURE(*status)) {
  43         return 0;
  44     }
  45
  46     if (timeScale < UDTS_JAVA_TIME || UDTS_MAX_SCALE <= timeScale
  47         || value < UTSV_UNITS_VALUE || UTSV_MAX_SCALE_VALUE <= value)
  48     {
  49         *status = U_ILLEGAL_ARGUMENT_ERROR;
  50         return 0;
  51     }
  52
  53     return timeScaleTable[timeScale][value];
  54 }
  55
  56 U_CAPI int64_t U_EXPORT2
  57 utmscale_fromInt64(int64_t otherTime, UDateTimeScale timeScale, UErrorCode *status)
  58 {
  59     const int64_t *data;
  60
  61     if (status == NULL || U_FAILURE(*status)) {
  62         return 0;
  63     }
  64
  65     if ((int32_t)timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
  66         *status = U_ILLEGAL_ARGUMENT_ERROR;
  67         return 0;
  68     }
  69
  70     data = (const int64_t *)(&timeScaleTable[timeScale]);
  71
  72     if (otherTime < data[UTSV_FROM_MIN_VALUE] || otherTime > data[UTSV_FROM_MAX_VALUE]) {
  73         *status = U_ILLEGAL_ARGUMENT_ERROR;
  74         return 0;
  75     }
  76
  77     return (otherTime + data[UTSV_EPOCH_OFFSET_VALUE]) * data[UTSV_UNITS_VALUE];
  78 }
  79
  80 U_CAPI int64_t U_EXPORT2
  81 utmscale_toInt64(int64_t universalTime, UDateTimeScale timeScale, UErrorCode *status)
  82 {
  83     const int64_t *data;
  84
  85     if (status == NULL || U_FAILURE(*status)) {
  86         return 0;
  87     }
  88
  89     if ((int32_t)timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
  90         *status = U_ILLEGAL_ARGUMENT_ERROR;
  91         return 0;
  92     }
  93
  94     data = (const int64_t *)(&timeScaleTable[timeScale]);
  95
  96     if (universalTime < data[UTSV_TO_MIN_VALUE] || universalTime > data[UTSV_TO_MAX_VALUE]) {
  97         *status = U_ILLEGAL_ARGUMENT_ERROR;
  98         return 0;
  99     }
 100
 101     if (universalTime < 0) {
 102         if (universalTime < data[UTSV_MIN_ROUND_VALUE]) {
 103             return (universalTime + data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_PLUS_1_VALUE];
 104         }
 105
 106         return (universalTime - data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_VALUE];
 107     }
 108
 109     if (universalTime > data[UTSV_MAX_ROUND_VALUE]) {
 110         return (universalTime - data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_MINUS_1_VALUE];
 111     }
 112
 113     return (universalTime + data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_VALUE];
 114 }
 115
 116 #endif /* #if !UCONFIG_NO_FORMATTING */