31 lines
742 B
C
31 lines
742 B
C
// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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/* Copyright 2013-2015 IBM Corp. */
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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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