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 *         NationS Microcontroller Software Support
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/*****************************************************************************
 * File Name: Common.h
 * Function: Defining the public functions used by other algorithm lib
 * version: V1.2.2
 * Author: huang.jinshang
 * date: 2020-01-06
 * ****************************************************************************/

#ifndef _N32L43X_ALGO_COMMON_H_
#define _N32L43X_ALGO_COMMON_H_

#include <stdint.h>

enum
{
	Cpy_OK = 0,		 // copy success
	SetZero_OK = 0,	 // set zero success
	XOR_OK = 0,		 // XOR success
	Reverse_OK = 0,	 // Reverse success
	Cmp_EQUAL = 0,	 // Two big number are equal
	Cmp_UNEQUAL = 1, // Two big number are not equal

};

/**
 * @brief disturb the sequence order
 * @param[in] order pointer to the sequence to be disturbed
 * @param[in] rand pointer to random number
 * @param[in] the length of order
 * @return RandomSort_OK:  disturb order success;  Others: disturb order fail;
 * @note
 */
uint32_t RandomSort(uint8_t *order, const uint8_t *rand, uint32_t len);

/**
 * @brief Copy data by byte
 * @param[in]  dst pointer to destination data
 * @param[in]  src pointer to source data
 * @param[in]  byte length
 * @return Cpy_OK: success; others: fail.
 * @note 1. dst and  src cannot be same
 */
uint32_t Cpy_U8(uint8_t *dst, uint8_t *src, uint32_t byteLen);

/**
 * @brief Copy data by word
 * @param[in]  dst pointer to destination data
 * @param[in]  src pointer to source data
 * @param[in]  word length
 * @return Cpy_OK: success; others: fail.
 * @note 1. dst and  src must be aligned by word
 */
uint32_t Cpy_U32(uint32_t *dst, const uint32_t *src, uint32_t wordLen);

/**
 * @brief XOR
 * @param[in] a pointer to one data to be XORed
 * @param[in] b pointer to another data to be XORed
 * @param[in] the length of order
 * @return XOR_OK:  operation success;  Others: operation fail;
 * @note
 */
uint32_t XOR_U8(uint8_t *a, uint8_t *b, uint8_t *c, uint32_t byteLen);

/**
 * @brief XORed two u32 arrays
 * @param[in] a pointer to one data to be XORed
 * @param[in] b pointer to another data to be XORed
 * @param[in] the length of order
 * @return XOR_OK:  operation success;  Others: operation fail;
 * @note
 */
uint32_t XOR_U32(uint32_t *a, uint32_t *b, uint32_t *c, uint32_t wordLen);

/**
 * @brief set zero by byte
 * @param[in] dst pointer to the address to be set zero
 * @param[in]  byte length
 * @return SetZero_OK: success; others: fail.
 * @note
 */
uint32_t SetZero_U8(uint8_t *dst, uint32_t byteLen);

/**
 * @brief set zero by word
 * @param[in] dst pointer to the address to be set zero
 * @param[in]  word length
 * @return SetZero_OK: success; others: fail.
 * @note
 */
uint32_t SetZero_U32(uint32_t *dst, uint32_t wordLen);

/**
 * @brief reverse byte order of every word, the words stay the same
 * @param[in]  dst pointer to the destination address
 * @param[in]  src pointer to the source address
 * @param[in]  word length
 * @return Reverse_OK: success; others: fail.
 * @note 1.dst and src can be same
 */
uint32_t ReverseBytesInWord_U32(uint32_t *dst, const uint32_t *src, uint32_t wordLen);

/**
 * @brief compare two big number
 * @param[in] a pointer to one big number
 * @param[in] word length of a
 * @param[in] b pointer to another big number
 * @param[in]  word length of b
 * @return Cmp_UNEQUAL:a!=b;Cmp_EQUAL: a==b.
 *
 */
int32_t Cmp_U32(const uint32_t *a, uint32_t aWordLen, const uint32_t *b, uint32_t bWordLen);

/**
 * @brief compare two big number
 * @param[in] a pointer to one big number
 * @param[in] word length of a
 * @param[in] b pointer to another big number
 * @param[in]  word length of b
 * @return Cmp_UNEQUAL:a!=b;Cmp_EQUAL: a==b.
 *
 */
int32_t Cmp_U8(const uint8_t *a, uint32_t aByteLen, const uint8_t *b, uint32_t bByteLen);

#endif
