44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* Copyright 2013-2014 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __TIME_UTILS_H
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#define __TIME_UTILS_H
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#include <stdint.h>
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#include <time.h>
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/* BCD conversion utilities. MSB is byte 3, LSB is byte 0 */
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static inline unsigned int bcd_byte(uint32_t bcd, int byteno)
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{
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bcd >>= byteno * 8;
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return (bcd >> 4 & 0xf) * 10 + (bcd & 0xf);
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}
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static inline uint32_t int_to_bcd2(unsigned int x)
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{
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return (((x / 10) << 4) & 0xf0) | (x % 10);
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}
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static inline uint32_t int_to_bcd4(unsigned int x)
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{
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return int_to_bcd2(x / 100) << 8 | int_to_bcd2(x % 100);
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}
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void tm_to_datetime(struct tm *tm, uint32_t *y_m_d, uint64_t *h_m_s_m);
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void datetime_to_tm(uint32_t y_m_d, uint64_t h_m_s_m, struct tm *tm);
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#endif
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