[apple/icu.git] / icuSources / i18n / utmscale.c

/*
*******************************************************************************
* Copyright (C) 2004, 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)

#define TIME_SCALE_CHECK(scale,status) \
    if(scale < 0 || scale >= UDTS_MAX_SCALE) { \
        *status = U_ILLEGAL_ARGUMENT_ERROR; \
        return 0; \
    }

typedef struct
{
    int64_t units;
    int64_t epochOffset;

    int64_t fromMin;
    int64_t fromMax;
    int64_t toMin;
    int64_t toMax;

    int64_t epochOffsetP1;
    int64_t epochOffsetM1;
    int64_t unitsRound;
    int64_t minRound;
    int64_t maxRound;
} InternalTimeScaleData;

static const InternalTimeScaleData timeScaleTable[] = {
  /*    units             epochOffset                     fromMin                        fromMax                            toMin                        toMax                    epochOffsetP1                epochOffsetM1              unitsRound                    minRound                     maxRound          */
    {milliseconds, INT64_C(62135769600000),     INT64_C(-984472973285477),     INT64_C(860201434085477),     INT64_C(-9223372036854774999), INT64_C(9223372036854774999), INT64_C(62135769600001),     INT64_C(62135769599999),     INT64_C(5000),         INT64_C(-9223372036854770808), INT64_C(9223372036854770807)},
    {seconds,      INT64_C(62135769600),        INT64_C(-984472973285),        INT64_C(860201434085),        U_INT64_MIN,                   INT64_C(9223372036854775807), INT64_C(62135769601),        INT64_C(62135769599),        INT64_C(5000000),      INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
    {milliseconds, INT64_C(62135769600000),     INT64_C(-984472973285477),     INT64_C(860201434085477),     INT64_C(-9223372036854774999), INT64_C(9223372036854774999), INT64_C(62135769600001),     INT64_C(62135769599999),     INT64_C(5000),         INT64_C(-9223372036854770808), INT64_C(9223372036854770807)},
    {ticks,        INT64_C(504912960000000000), U_INT64_MIN,                   INT64_C(8718459076854775807), INT64_C(-8718459076854775808), INT64_C(9223372036854775807), INT64_C(504912960000000000), INT64_C(504912960000000000), INT64_C(0),            U_INT64_MIN,                   INT64_C(9223372036854775807)},
    {ticks,        INT64_C(0),                  U_INT64_MIN,                   INT64_C(9223372036854775807), U_INT64_MIN,                   INT64_C(9223372036854775807), INT64_C(0),                  INT64_C(0),                  INT64_C(0),            U_INT64_MIN,                   INT64_C(9223372036854775807)},
    {seconds,      INT64_C(60052924800),        INT64_C(-982390128485),        INT64_C(862284278885),        U_INT64_MIN,                   INT64_C(9223372036854775807), INT64_C(60052924801),        INT64_C(60052924799),        INT64_C(5000000),      INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
    {seconds,      INT64_C(63114076800),        INT64_C(-985451280485),        INT64_C(859223126885),        U_INT64_MIN,                   INT64_C(9223372036854775807), INT64_C(63114076801),        INT64_C(63114076799),        INT64_C(5000000),      INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
    {days,         INT64_C(693596),             INT64_C(-11368795),            INT64_C(9981603),             U_INT64_MIN,                   INT64_C(9223372036854775807), INT64_C(693597),             INT64_C(693595),             INT64_C(432000000000), INT64_C(-9223371604854775808), INT64_C(9223371604854775807)},
    {days,         INT64_C(693596),             INT64_C(-11368795),            INT64_C(9981603),             U_INT64_MIN,                   INT64_C(9223372036854775807), INT64_C(693597),             INT64_C(693595),             INT64_C(432000000000), INT64_C(-9223371604854775808), INT64_C(9223371604854775807)},
};

U_CAPI int64_t U_EXPORT2
utmscale_getTimeScaleValue(UDateTimeScale timeScale, UTimeScaleValue value, UErrorCode *status)
{
    const InternalTimeScaleData *internalData;

    if (status == NULL || U_FAILURE(*status)) {
        return 0;
    }

    if (timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return 0;
    }

    internalData = &timeScaleTable[timeScale];

    switch (value)
    {
    case UTSV_UNITS_VALUE:
        return internalData->units;
        
    case UTSV_EPOCH_OFFSET_VALUE:
        return internalData->epochOffset;
    
    case UTSV_FROM_MIN_VALUE:
        return internalData->fromMin;
        
    case UTSV_FROM_MAX_VALUE:
        return internalData->fromMax;
        
    case UTSV_TO_MIN_VALUE:
        return internalData->toMin;
        
    case UTSV_TO_MAX_VALUE:
        return internalData->toMax;
        
    case UTSV_EPOCH_OFFSET_PLUS_1_VALUE:
        return internalData->epochOffsetP1;
        
    case UTSV_EPOCH_OFFSET_MINUS_1_VALUE:
        return internalData->epochOffsetM1;
        
    case UTSV_UNITS_ROUND_VALUE:
        return internalData->unitsRound;
    
    case UTSV_MIN_ROUND_VALUE:
        return internalData->minRound;
        
    case UTSV_MAX_ROUND_VALUE:
        return internalData->maxRound;
        
    default:
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return 0;
    }
}

U_CAPI int64_t U_EXPORT2
utmscale_fromInt64(int64_t otherTime, UDateTimeScale timeScale, UErrorCode *status)
{
    const InternalTimeScaleData *data;
    
    if (status == NULL || U_FAILURE(*status)) {
        return 0;
    }

    if (timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return 0;
    }

    data = &timeScaleTable[timeScale];

    if (otherTime < data->fromMin || otherTime > data->fromMax) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return 0;
    }
    
    return (otherTime + data->epochOffset) * data->units;
}

U_CAPI int64_t U_EXPORT2
utmscale_toInt64(int64_t universalTime, UDateTimeScale timeScale, UErrorCode *status)
{
    const InternalTimeScaleData *data;
    
    if (status == NULL || U_FAILURE(*status)) {
        return 0;
    }

    if (timeScale < 0 || timeScale >= UDTS_MAX_SCALE) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return 0;
    }

    data = &timeScaleTable[timeScale];

    if (universalTime < data->toMin || universalTime > data->toMax) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return 0;
    }
    
    if (universalTime < 0) {
        if (universalTime < data->minRound) {
            return (universalTime + data->unitsRound) / data->units - data->epochOffsetP1;
        }
        
        return (universalTime - data->unitsRound) / data->units - data->epochOffset;
    }
    
    if (universalTime > data->maxRound) {
        return (universalTime - data->unitsRound) / data->units - data->epochOffsetM1;
    }
    
    return (universalTime + data->unitsRound) / data->units - data->epochOffset;
}

#endif /* #if !UCONFIG_NO_FORMATTING */
Commit	Line	Data
374ca955 A	1	/*
	2	*******************************************************************************
	3	* Copyright (C) 2004, 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	#define TIME_SCALE_CHECK(scale,status) \
	23	if(scale < 0 \|\| scale >= UDTS_MAX_SCALE) { \
	24	*status = U_ILLEGAL_ARGUMENT_ERROR; \
	25	return 0; \
	26	}
	27
	28	typedef struct
	29	{
	30	int64_t units;
	31	int64_t epochOffset;
	32
	33	int64_t fromMin;
	34	int64_t fromMax;
	35	int64_t toMin;
	36	int64_t toMax;
	37
	38	int64_t epochOffsetP1;
	39	int64_t epochOffsetM1;
	40	int64_t unitsRound;
	41	int64_t minRound;
	42	int64_t maxRound;
	43	} InternalTimeScaleData;
	44
	45	static const InternalTimeScaleData timeScaleTable[] = {
	46	/* units epochOffset fromMin fromMax toMin toMax epochOffsetP1 epochOffsetM1 unitsRound minRound maxRound */
	47	{milliseconds, INT64_C(62135769600000), INT64_C(-984472973285477), INT64_C(860201434085477), INT64_C(-9223372036854774999), INT64_C(9223372036854774999), INT64_C(62135769600001), INT64_C(62135769599999), INT64_C(5000), INT64_C(-9223372036854770808), INT64_C(9223372036854770807)},
	48	{seconds, INT64_C(62135769600), INT64_C(-984472973285), INT64_C(860201434085), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(62135769601), INT64_C(62135769599), INT64_C(5000000), INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
	49	{milliseconds, INT64_C(62135769600000), INT64_C(-984472973285477), INT64_C(860201434085477), INT64_C(-9223372036854774999), INT64_C(9223372036854774999), INT64_C(62135769600001), INT64_C(62135769599999), INT64_C(5000), INT64_C(-9223372036854770808), INT64_C(9223372036854770807)},
	50	{ticks, INT64_C(504912960000000000), U_INT64_MIN, INT64_C(8718459076854775807), INT64_C(-8718459076854775808), INT64_C(9223372036854775807), INT64_C(504912960000000000), INT64_C(504912960000000000), INT64_C(0), U_INT64_MIN, INT64_C(9223372036854775807)},
	51	{ticks, INT64_C(0), U_INT64_MIN, INT64_C(9223372036854775807), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(0), INT64_C(0), INT64_C(0), U_INT64_MIN, INT64_C(9223372036854775807)},
	52	{seconds, INT64_C(60052924800), INT64_C(-982390128485), INT64_C(862284278885), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(60052924801), INT64_C(60052924799), INT64_C(5000000), INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
	53	{seconds, INT64_C(63114076800), INT64_C(-985451280485), INT64_C(859223126885), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(63114076801), INT64_C(63114076799), INT64_C(5000000), INT64_C(-9223372036849775808), INT64_C(9223372036849775807)},
	54	{days, INT64_C(693596), INT64_C(-11368795), INT64_C(9981603), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(693597), INT64_C(693595), INT64_C(432000000000), INT64_C(-9223371604854775808), INT64_C(9223371604854775807)},
	55	{days, INT64_C(693596), INT64_C(-11368795), INT64_C(9981603), U_INT64_MIN, INT64_C(9223372036854775807), INT64_C(693597), INT64_C(693595), INT64_C(432000000000), INT64_C(-9223371604854775808), INT64_C(9223371604854775807)},
	56	};
	57
	58	U_CAPI int64_t U_EXPORT2
	59	utmscale_getTimeScaleValue(UDateTimeScale timeScale, UTimeScaleValue value, UErrorCode *status)
	60	{
	61	const InternalTimeScaleData *internalData;
	62
	63	if (status == NULL \|\| U_FAILURE(*status)) {
	64	return 0;
65	}
66
67	if (timeScale < 0 \|\| timeScale >= UDTS_MAX_SCALE) {
68	*status = U_ILLEGAL_ARGUMENT_ERROR;
69	return 0;
70	}
71
72	internalData = &timeScaleTable[timeScale];
73
74	switch (value)
75	{
76	case UTSV_UNITS_VALUE:
77	return internalData->units;
78
79	case UTSV_EPOCH_OFFSET_VALUE:
80	return internalData->epochOffset;
81
82	case UTSV_FROM_MIN_VALUE:
83	return internalData->fromMin;
84
85	case UTSV_FROM_MAX_VALUE:
86	return internalData->fromMax;
87
88	case UTSV_TO_MIN_VALUE:
89	return internalData->toMin;
90
91	case UTSV_TO_MAX_VALUE:
92	return internalData->toMax;
93
94	case UTSV_EPOCH_OFFSET_PLUS_1_VALUE:
95	return internalData->epochOffsetP1;
96
97	case UTSV_EPOCH_OFFSET_MINUS_1_VALUE:
98	return internalData->epochOffsetM1;
99
100	case UTSV_UNITS_ROUND_VALUE:
101	return internalData->unitsRound;
102
103	case UTSV_MIN_ROUND_VALUE:
104	return internalData->minRound;
105
106	case UTSV_MAX_ROUND_VALUE:
107	return internalData->maxRound;
108
109	default:
110	*status = U_ILLEGAL_ARGUMENT_ERROR;
111	return 0;
112	}
113	}
114
115	U_CAPI int64_t U_EXPORT2
116	utmscale_fromInt64(int64_t otherTime, UDateTimeScale timeScale, UErrorCode *status)
117	{
118	const InternalTimeScaleData *data;
119
120	if (status == NULL \|\| U_FAILURE(*status)) {
121	return 0;
122	}
123
124	if (timeScale < 0 \|\| timeScale >= UDTS_MAX_SCALE) {
125	*status = U_ILLEGAL_ARGUMENT_ERROR;
126	return 0;
127	}
128
129	data = &timeScaleTable[timeScale];
130
131	if (otherTime < data->fromMin \|\| otherTime > data->fromMax) {
132	*status = U_ILLEGAL_ARGUMENT_ERROR;
133	return 0;
134	}
135
136	return (otherTime + data->epochOffset) * data->units;
137	}
138
139	U_CAPI int64_t U_EXPORT2
140	utmscale_toInt64(int64_t universalTime, UDateTimeScale timeScale, UErrorCode *status)
141	{
142	const InternalTimeScaleData *data;
143
144	if (status == NULL \|\| U_FAILURE(*status)) {
145	return 0;
146	}
147
148	if (timeScale < 0 \|\| timeScale >= UDTS_MAX_SCALE) {
149	*status = U_ILLEGAL_ARGUMENT_ERROR;
150	return 0;
151	}
152
153	data = &timeScaleTable[timeScale];
154
155	if (universalTime < data->toMin \|\| universalTime > data->toMax) {
156	*status = U_ILLEGAL_ARGUMENT_ERROR;
157	return 0;
158	}
159
160	if (universalTime < 0) {
161	if (universalTime < data->minRound) {
162	return (universalTime + data->unitsRound) / data->units - data->epochOffsetP1;
163	}
164
165	return (universalTime - data->unitsRound) / data->units - data->epochOffset;
166	}
167
168	if (universalTime > data->maxRound) {
169	return (universalTime - data->unitsRound) / data->units - data->epochOffsetM1;
170	}
171
172	return (universalTime + data->unitsRound) / data->units - data->epochOffset;
173	}
174
175	#endif /* #if !UCONFIG_NO_FORMATTING */