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/* SPDX-License-Identifier: BSD-3-Clause */
/*
* Copyright (c) 2020-2021 Rockchip Electronics Co., Ltd.
*/
#include "hal_base.h"
/** @addtogroup RK_HAL_Driver
* @{
*/
/** @addtogroup HAL_BASE_EX
* @{
*/
/** @addtogroup HAL_BASE_EX_How_To_Use How To Use
* @{
The HAL_BASE_EX driver can be used as follows:
@} */
/** @defgroup HAL_BASE_EX_Private_Definition Private Definition
* @{
*/
/********************* Private MACRO Definition ******************************/
/********************* Private Structure Definition **************************/
/********************* Private Variable Definition ***************************/
/********************* Private Function Definition ***************************/
/** @} */
/********************* Public Function Definition ***************************/
/** @defgroup HAL_BASE_EX_Exported_Functions_Group5 Other Functions
* @{
*/
/**
* @brief uint64_t numerator / uint32_t denominator with remainder
* @param numerator
* @param denominator
* @param pRemainder [out] pointer to unsigned 32bit remainder
* @return uint64_t result. sets *pRemainder if pRemainder is not null
*/
uint64_t HAL_DivU64Rem(uint64_t numerator, uint32_t denominator, uint32_t *pRemainder)
{
uint64_t remainder = numerator;
uint64_t b = denominator;
uint64_t result;
uint64_t d = 1;
uint32_t high = numerator >> 32;
result = 0;
if (high >= denominator) {
high /= denominator;
result = (uint64_t)high << 32;
remainder -= (uint64_t)(high * denominator) << 32;
}
while ((int64_t)b > 0 && b < remainder) {
b = b + b;
d = d + d;
}
do {
if (remainder >= b) {
remainder -= b;
result += d;
}
b >>= 1;
d >>= 1;
} while (d);
if (pRemainder) {
*pRemainder = remainder;
}
return result;
}
/** @} */
/** @} */
/** @} */
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