diff options
Diffstat (limited to 'intl/icu/source/i18n/utmscale.cpp')
| -rw-r--r-- | intl/icu/source/i18n/utmscale.cpp | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/utmscale.cpp b/intl/icu/source/i18n/utmscale.cpp new file mode 100644 index 0000000000..61df43e778 --- /dev/null +++ b/intl/icu/source/i18n/utmscale.cpp @@ -0,0 +1,114 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +******************************************************************************* +* Copyright (C) 2004-2012, International Business Machines Corporation and +* others. All Rights Reserved. +******************************************************************************* +*/ + +#include "unicode/utypes.h" + +#if !UCONFIG_NO_FORMATTING + +#include "unicode/utmscale.h" + +#define ticks INT64_C(1) +#define microseconds (ticks * 10) +#define milliseconds (microseconds * 1000) +#define seconds (milliseconds * 1000) +#define minutes (seconds * 60) +#define hours (minutes * 60) +#define days (hours * 24) + +/* Constants generated by ICU4J com.ibm.icu.dev.tool.timescale.GenerateCTimeScaleData. */ +static const int64_t timeScaleTable[UDTS_MAX_SCALE][UTSV_MAX_SCALE_VALUE] = { + /* units epochOffset fromMin fromMax toMin toMax epochOffsetP1 epochOffsetM1 unitsRound minRound maxRound */ + {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)}, + {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)}, + {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)}, + {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}, + {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}, + {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)}, + {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)}, + {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)}, + {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)}, + {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)}, +}; + +U_CAPI int64_t U_EXPORT2 +utmscale_getTimeScaleValue(UDateTimeScale timeScale, UTimeScaleValue value, UErrorCode *status) +{ + if (status == nullptr || U_FAILURE(*status)) { + return 0; + } + + if (timeScale < UDTS_JAVA_TIME || UDTS_MAX_SCALE <= timeScale + || value < UTSV_UNITS_VALUE || UTSV_MAX_SCALE_VALUE <= value) + { + *status = U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + return timeScaleTable[timeScale][value]; +} + +U_CAPI int64_t U_EXPORT2 +utmscale_fromInt64(int64_t otherTime, UDateTimeScale timeScale, UErrorCode *status) UPRV_NO_SANITIZE_UNDEFINED { + const int64_t *data; + + if (status == nullptr || U_FAILURE(*status)) { + return 0; + } + + if ((int32_t)timeScale < 0 || timeScale >= UDTS_MAX_SCALE) { + *status = U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + data = (const int64_t *)(&timeScaleTable[timeScale]); + + if (otherTime < data[UTSV_FROM_MIN_VALUE] || otherTime > data[UTSV_FROM_MAX_VALUE]) { + *status = U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + return (otherTime + data[UTSV_EPOCH_OFFSET_VALUE]) * data[UTSV_UNITS_VALUE]; +} + +U_CAPI int64_t U_EXPORT2 +utmscale_toInt64(int64_t universalTime, UDateTimeScale timeScale, UErrorCode *status) UPRV_NO_SANITIZE_UNDEFINED { + const int64_t *data; + + if (status == nullptr || U_FAILURE(*status)) { + return 0; + } + + if ((int32_t)timeScale < 0 || timeScale >= UDTS_MAX_SCALE) { + *status = U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + data = (const int64_t *)(&timeScaleTable[timeScale]); + + if (universalTime < data[UTSV_TO_MIN_VALUE] || universalTime > data[UTSV_TO_MAX_VALUE]) { + *status = U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + if (universalTime < 0) { + if (universalTime < data[UTSV_MIN_ROUND_VALUE]) { + return (universalTime + data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_PLUS_1_VALUE]; + } + + return (universalTime - data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_VALUE]; + } + + if (universalTime > data[UTSV_MAX_ROUND_VALUE]) { + return (universalTime - data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_MINUS_1_VALUE]; + } + + return (universalTime + data[UTSV_UNITS_ROUND_VALUE]) / data[UTSV_UNITS_VALUE] - data[UTSV_EPOCH_OFFSET_VALUE]; +} + +#endif /* #if !UCONFIG_NO_FORMATTING */ |