// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
/* Copyright 2013-2015 IBM Corp. */

#ifndef __TIME_UTILS_H
#define __TIME_UTILS_H

#include <stdint.h>
#include <time.h>

/* BCD conversion utilities. MSB is byte 3, LSB is byte 0 */

static inline unsigned int bcd_byte(uint32_t bcd, int byteno)
{
	bcd >>= byteno * 8;
	return (bcd >> 4 & 0xf) * 10 + (bcd & 0xf);
}

static inline uint32_t int_to_bcd2(unsigned int x)
{
	return (((x / 10) << 4) & 0xf0) | (x % 10);
}

static inline uint32_t int_to_bcd4(unsigned int x)
{
	return int_to_bcd2(x / 100) << 8 | int_to_bcd2(x % 100);
}

void tm_to_datetime(struct tm *tm, uint32_t *y_m_d, uint64_t *h_m_s_m);
void datetime_to_tm(uint32_t y_m_d, uint64_t h_m_s_m, struct tm *tm);

#endif