aaru-dps/Aaru.Checksums.Native
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Refactor and reformat.

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This commit is contained in:
Natalia Portillo
2023-09-23 18:55:52 +01:00
parent 33f021fd54
commit 1905cb0d43
41 changed files with 1557 additions and 1462 deletions
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27
crc16.c
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@@ -31,9 +31,9 @@
*
* @return Pointer to a structure containing the checksum state.
*/
AARU_EXPORT crc16_ctx* AARU_CALL crc16_init(void)
AARU_EXPORT crc16_ctx *AARU_CALL crc16_init(void)
{
crc16_ctx* ctx = (crc16_ctx*)malloc(sizeof(crc16_ctx));
crc16_ctx *ctx = (crc16_ctx *)malloc(sizeof(crc16_ctx));
if(!ctx) return NULL;
@@ -56,7 +56,7 @@ AARU_EXPORT crc16_ctx* AARU_CALL crc16_init(void)
*
* @returns 0 on success, -1 on error.
*/
AARU_EXPORT int AARU_CALL crc16_update(crc16_ctx* ctx, const uint8_t* data, uint32_t len)
AARU_EXPORT int AARU_CALL crc16_update(crc16_ctx *ctx, const uint8_t *data, uint32_t len)
{
// Unroll according to Intel slicing by uint8_t
// http://www.intel.com/technology/comms/perfnet/download/CRC_generators.pdf
@@ -64,12 +64,12 @@ AARU_EXPORT int AARU_CALL crc16_update(crc16_ctx* ctx, const uint8_t* data, uint
if(!ctx || !data) return -1;
uint16_t crc;
const uint32_t* current;
const uint8_t* current_char = (const uint8_t*)data;
const size_t unroll = 4;
const size_t bytes_at_once = 8 * unroll;
uintptr_t unaligned_length = (4 - (((uintptr_t)current_char) & 3)) & 3;
uint16_t crc;
const uint32_t *current;
const uint8_t *current_char = data;
const size_t unroll = 4;
const size_t bytes_at_once = 8 * unroll;
uintptr_t unaligned_length = (4 - (((uintptr_t)current_char) & 3)) & 3;
crc = ctx->crc;
@@ -80,7 +80,7 @@ AARU_EXPORT int AARU_CALL crc16_update(crc16_ctx* ctx, const uint8_t* data, uint
unaligned_length--;
}
current = (const uint32_t*)current_char;
current = (const uint32_t *)current_char;
while(len >= bytes_at_once)
{
@@ -89,6 +89,7 @@ AARU_EXPORT int AARU_CALL crc16_update(crc16_ctx* ctx, const uint8_t* data, uint
{
uint32_t one = *current++ ^ crc;
uint32_t two = *current++;
// TODO: Big endian!
crc = crc16_table[0][(two >> 24) & 0xFF] ^ crc16_table[1][(two >> 16) & 0xFF] ^
crc16_table[2][(two >> 8) & 0xFF] ^ crc16_table[3][two & 0xFF] ^ crc16_table[4][(one >> 24) & 0xFF] ^
@@ -98,7 +99,7 @@ AARU_EXPORT int AARU_CALL crc16_update(crc16_ctx* ctx, const uint8_t* data, uint
len -= bytes_at_once;
}
current_char = (const uint8_t*)current;
current_char = (const uint8_t *)current;
while(len-- != 0) crc = (crc >> 8) ^ crc16_table[0][(crc & 0xFF) ^ *current_char++];
@@ -117,7 +118,7 @@ AARU_EXPORT int AARU_CALL crc16_update(crc16_ctx* ctx, const uint8_t* data, uint
*
* @returns 0 on success, -1 on error.
*/
AARU_EXPORT int AARU_CALL crc16_final(crc16_ctx* ctx, uint16_t* crc)
AARU_EXPORT int AARU_CALL crc16_final(crc16_ctx *ctx, uint16_t *crc)
{
if(!ctx) return -1;
@@ -134,7 +135,7 @@ AARU_EXPORT int AARU_CALL crc16_final(crc16_ctx* ctx, uint16_t* crc)
*
* @param ctx The CRC-16 checksum context structure, to be freed.
*/
AARU_EXPORT void AARU_CALL crc16_free(crc16_ctx* ctx)
AARU_EXPORT void AARU_CALL crc16_free(crc16_ctx *ctx)
{
if(ctx) free(ctx);
}