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Add documentation.

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This commit is contained in:
Natalia Portillo
2023-09-23 18:10:44 +01:00
parent 3358d66f0a
commit 33f021fd54
22 changed files with 658 additions and 48 deletions
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24
crc32_clmul.c
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@@ -34,8 +34,7 @@
#include "crc32.h"
#include "crc32_simd.h"
CLMUL
static void fold_1(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m128i* xmm_crc3)
CLMUL static void fold_1(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m128i* xmm_crc3)
{
const __m128i xmm_fold4 = _mm_set_epi32(0x00000001, 0x54442bd4, 0x00000001, 0xc6e41596);
@@ -57,8 +56,7 @@ static void fold_1(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m1
*xmm_crc3 = _mm_castps_si128(ps_res);
}
CLMUL
static void fold_2(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m128i* xmm_crc3)
CLMUL static void fold_2(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m128i* xmm_crc3)
{
const __m128i xmm_fold4 = _mm_set_epi32(0x00000001, 0x54442bd4, 0x00000001, 0xc6e41596);
@@ -88,8 +86,7 @@ static void fold_2(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m1
*xmm_crc3 = _mm_castps_si128(ps_res31);
}
CLMUL
static void fold_3(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m128i* xmm_crc3)
CLMUL static void fold_3(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m128i* xmm_crc3)
{
const __m128i xmm_fold4 = _mm_set_epi32(0x00000001, 0x54442bd4, 0x00000001, 0xc6e41596);
@@ -125,8 +122,7 @@ static void fold_3(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m1
*xmm_crc3 = _mm_castps_si128(ps_res32);
}
CLMUL
static void fold_4(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m128i* xmm_crc3)
CLMUL static void fold_4(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m128i* xmm_crc3)
{
const __m128i xmm_fold4 = _mm_set_epi32(0x00000001, 0x54442bd4, 0x00000001, 0xc6e41596);
@@ -170,8 +166,7 @@ static void fold_4(__m128i* xmm_crc0, __m128i* xmm_crc1, __m128i* xmm_crc2, __m1
*xmm_crc3 = _mm_castps_si128(ps_res3);
}
CLMUL
static void partial_fold(const size_t len,
CLMUL static void partial_fold(const size_t len,
__m128i* xmm_crc0,
__m128i* xmm_crc1,
__m128i* xmm_crc2,
@@ -228,6 +223,15 @@ static void partial_fold(const size_t len,
*/
#define XOR_INITIAL(where) ONCE(where = _mm_xor_si128(where, xmm_initial))
/**
* @brief Calculate the CRC32 checksum using CLMUL instruction extension.
*
* @param previous_crc The previously calculated CRC32 checksum.
* @param data Pointer to the input data buffer.
* @param len Length of the input data in bytes.
*
* @return The calculated CRC32 checksum.
*/
AARU_EXPORT CLMUL uint32_t AARU_CALL crc32_clmul(uint32_t previous_crc, const uint8_t* data, long len)
{
unsigned long algn_diff;