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zlib 1.2.3.4

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This commit is contained in:
Mark Adler
2011-09-09 23:26:40 -07:00
parent 639be99788
commit f6194ef39a
45 changed files with 3663 additions and 873 deletions
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32
crc32.c
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@@ -53,7 +53,7 @@
/* Definitions for doing the crc four data bytes at a time. */
#ifdef BYFOUR
# define REV(w) (((w)>>24)+(((w)>>8)&0xff00)+ \
# define REV(w) ((((w)>>24)&0xff)+(((w)>>8)&0xff00)+ \
(((w)&0xff00)<<8)+(((w)&0xff)<<24))
local unsigned long crc32_little OF((unsigned long,
const unsigned char FAR *, unsigned));
@@ -68,11 +68,7 @@
local unsigned long gf2_matrix_times OF((unsigned long *mat,
unsigned long vec));
local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat));
#ifdef _LARGEFILE64_SOURCE
local uLong crc32_combine_(uLong crc1, uLong crc2, off64_t len2);
#else
local uLong crc32_combine_(uLong crc1, uLong crc2, z_off_t len2);
#endif
local uLong crc32_combine_(uLong crc1, uLong crc2, z_off64_t len2);
#ifdef DYNAMIC_CRC_TABLE
@@ -376,23 +372,19 @@ local void gf2_matrix_square(square, mat)
local uLong crc32_combine_(crc1, crc2, len2)
uLong crc1;
uLong crc2;
#ifdef _LARGEFILE64_SOURCE
off64_t len2;
#else
z_off_t len2;
#endif
z_off64_t len2;
{
int n;
unsigned long row;
unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */
unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */
/* degenerate case */
if (len2 == 0)
/* degenerate case (also disallow negative lengths) */
if (len2 <= 0)
return crc1;
/* put operator for one zero bit in odd */
odd[0] = 0xedb88320L; /* CRC-32 polynomial */
odd[0] = 0xedb88320UL; /* CRC-32 polynomial */
row = 1;
for (n = 1; n < GF2_DIM; n++) {
odd[n] = row;
@@ -441,20 +433,10 @@ uLong ZEXPORT crc32_combine(crc1, crc2, len2)
return crc32_combine_(crc1, crc2, len2);
}
#ifdef _LARGEFILE64_SOURCE
uLong ZEXPORT crc32_combine64(crc1, crc2, len2)
uLong crc1;
uLong crc2;
off64_t len2;
z_off64_t len2;
{
return crc32_combine_(crc1, crc2, len2);
}
#else
uLong ZEXPORT crc32_combine64(crc1, crc2, len2)
uLong crc1;
uLong crc2;
z_off_t len2;
{
return crc32_combine_(crc1, crc2, len2);
}
#endif