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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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14
crc64_vmull.c
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@@ -39,6 +39,20 @@ TARGET_WITH_SIMD FORCE_INLINE uint64x2_t fold(uint64x2_t in, uint64x2_t foldCons
sse2neon_vmull_p64(vget_high_u64(in), vget_high_u64(foldConstants)));
}
/**
* @brief Calculates the CRC-64 checksum using the vmull instruction.
*
* This function calculates the CRC-64 checksum of the given data using the
* vmull instruction for optimized performance. It takes the previous CRC value,
* the data buffer, and the length of data as parameters. The function returns
* the resulting CRC-32 checksum.
*
* @param previous_crc The previous CRC value.
* @param data The data buffer.
* @param len The length of the data buffer.
*
* @return The CRC-64 checksum of the given data.
*/
AARU_EXPORT TARGET_WITH_SIMD uint64_t AARU_CALL crc64_vmull(uint64_t previous_crc, const uint8_t* data, long len)
{
const uint64_t k1 = 0xe05dd497ca393ae4; // bitReflect(expMod65(128 + 64, poly, 1)) << 1;