libz-sys 1.1.28

Low-level bindings to the system libz library (also known as zlib).
Documentation 
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/* arm_functions.h -- ARM implementations for arch-specific functions.
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#ifndef ARM_FUNCTIONS_H_
#define ARM_FUNCTIONS_H_

#ifdef ARM_NEON
uint32_t adler32_neon(uint32_t adler, const uint8_t *buf, size_t len);
uint32_t adler32_fold_copy_neon(uint32_t adler, uint8_t *dst, const uint8_t *src, size_t len);
uint8_t* chunkmemset_safe_neon(uint8_t *out, uint8_t *from, unsigned len, unsigned left);

#  ifdef HAVE_BUILTIN_CTZLL
uint32_t compare256_neon(const uint8_t *src0, const uint8_t *src1);
uint32_t longest_match_neon(deflate_state *const s, Pos cur_match);
uint32_t longest_match_slow_neon(deflate_state *const s, Pos cur_match);
#  endif
void slide_hash_neon(deflate_state *s);
void inflate_fast_neon(PREFIX3(stream) *strm, uint32_t start);
#endif

#ifdef ARM_CRC32
uint32_t crc32_armv8(uint32_t crc, const uint8_t *buf, size_t len);
void     crc32_fold_copy_armv8(crc32_fold *crc, uint8_t *dst, const uint8_t *src, size_t len);
void     crc32_fold_armv8(crc32_fold *crc, const uint8_t *src, size_t len, uint32_t init_crc);
#endif

#ifdef ARM_SIMD
void slide_hash_armv6(deflate_state *s);
#endif


#ifdef DISABLE_RUNTIME_CPU_DETECTION
// ARM - SIMD
#  if (defined(ARM_SIMD) && defined(__ARM_FEATURE_SIMD32)) || defined(ARM_NOCHECK_SIMD)
#    undef native_slide_hash
#    define native_slide_hash slide_hash_armv6
#  endif
// ARM - NEON
#  if (defined(ARM_NEON) && (defined(__ARM_NEON__) || defined(__ARM_NEON))) || ARM_NOCHECK_NEON
#    undef native_adler32
#    define native_adler32 adler32_neon
#    undef native_adler32_fold_copy
#    define native_adler32_fold_copy adler32_fold_copy_neon
#    undef native_chunkmemset_safe
#    define native_chunkmemset_safe chunkmemset_safe_neon
#    undef native_inflate_fast
#    define native_inflate_fast inflate_fast_neon
#    undef native_slide_hash
#    define native_slide_hash slide_hash_neon
#    ifdef HAVE_BUILTIN_CTZLL
#      undef native_compare256
#      define native_compare256 compare256_neon
#      undef native_longest_match
#      define native_longest_match longest_match_neon
#      undef native_longest_match_slow
#      define native_longest_match_slow longest_match_slow_neon
#    endif
#  endif
// ARM - CRC32
#  if (defined(ARM_CRC32) && defined(__ARM_FEATURE_CRC32))
#    undef native_crc32
#    define native_crc32 crc32_armv8
#    undef native_crc32_fold
#    define native_crc32_fold crc32_fold_armv8
#    undef native_crc32_fold_copy
#    define native_crc32_fold_copy crc32_fold_copy_armv8
#  endif
#endif

#endif /* ARM_FUNCTIONS_H_ */