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/*
* @copyright Copyright (c) 2016-2020 TOYOTA MOTOR CORPORATION.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
File name : _pbSum.cpp
System name :
Subsystem name : System common functions
Title : System APIs Asynchronous Data HDD Backup Processing
--------------------------------------------------------------------------------------
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <vehicle_service/positioning_base_library.h>
/*
Function prototype declarations
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* MODULE : Sum()
* ABSTRACT : SUM calculation process
* NOTE : Calculate the SUM value for the specified size from the SUM calculation start address.
* ARGUMENT : void *p SUM calculation start address
* int32 size Size (bytes)
* u_int8 type Calculation width Byte :sizeof(u_char)
* Word :sizeof(u_int16)
* Long-word:sizeof(u_int32)
* NOTE : Calculate the SUM value from the SUM calculation start address by the size specified by the calculation width.
* RETURN : u_int32 SUM value
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
u_int32 Sum(void *p, int32 size, u_int8 type) { // LCOV_EXCL_START 8:dead code
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
u_int32 sum = 0; /* SUM value */
u_int32 loop_cnt; /* Loop counter */
u_int32 loop_num; /* Number of loops */
/* Pointer size check */
if ((p == NULL) || (size == 0)) {
/* nop */
} else {
/* When the calculation width is "Long word" */
if (type == sizeof(int32)) {
u_int32 * ptr32 = reinterpret_cast<u_int32 *>(p); /* Long word pointer */
/* Calculate the number of processes and loop for the number of Times to compute the Sum value. */
loop_num = static_cast<u_int32>(size / sizeof(u_int32));
for (loop_cnt = 0; loop_cnt < loop_num; loop_cnt++) {
sum += *ptr32;
ptr32++;
}
} else if (type == sizeof(int16)) {
/* For "Word" */
u_int16 * ptr16 = reinterpret_cast<u_int16 *>(p); /* Word pointer */
loop_num = static_cast<u_int32>(size / sizeof(u_int16));
for (loop_cnt = 0; loop_cnt < loop_num; loop_cnt++) {
sum += *ptr16;
ptr16++;
}
} else if (type == sizeof(char)) {
/* For "Byte" */
u_char * ptr8 = reinterpret_cast<u_char *>(p); /* Byte pointer */
loop_num = static_cast<u_int32>(size / sizeof(u_char));
for (loop_cnt = 0; loop_cnt < loop_num; loop_cnt++) {
sum += *ptr8;
ptr8++;
}
} else {
/* For other than above */
/* No processing */
}
}
return sum;
}
// LCOV_EXCL_STOP
/*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
End of File : Sum.cpp
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*/
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