Marcel Moolenaar ee6bcf1223 Refactor the CRC-32 code to enhance its usability. Move the actual ... CRC logic to a new function: crc32_raw() that obtains the initial CRC value as well as leaves any post-processing to the caller. As such, it can be used when the initial CRC value is not ~0U or when the final CRC value does need to be inverted (bitwise). It also means that crc32_raw() can be called repeatedly when the data is not available as a single block, such as for scatter/gather lists and the likes. Avoid the additional call overhead incured by the refactoring by moving the implementation off crc32() to sys/systm.h and making it inlinable. Since crc32_raw() is itself trivial and since it may be used in loops that iterate over fragments, having it available for inlining can be beneficial. Hence, move its implementation to sys/systm.h as well. Keep the original implementation of crc32() in libkern/crc32.c for documentation purposes (as a comment of course). Triggered by: Jose M Rodriguez (josemi at freebsd dot jazztel dot es) Discussed on: current@ Tested on: amd64, ia64 (BVO having GPT partitions) Jargon file candidate: BVO = By Virtue Of :-)		2005-04-27 22:26:45 +00:00
..
alpha	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
arm	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
ia64	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
arc4random.c
ashldi3.c
ashrdi3.c
bcd.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
bcmp.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
bsearch.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
crc32.c	Refactor the CRC-32 code to enhance its usability. Move the actual	2005-04-27 22:26:45 +00:00
divdi3.c
ffs.c
ffsl.c
fls.c
flsl.c
fnmatch.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
gets.c	We do want to print '\n'/'\r'.	2005-02-03 15:47:30 +00:00
iconv_converter_if.m	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
iconv_xlat16.c
iconv_xlat.c
iconv.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
index.c
inet_ntoa.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
lshrdi3.c
mcount.c	Move the kernel-specific logic to adjust frompc from MI to MD. For	2004-08-27 19:42:35 +00:00
moddi3.c
qdivrem.c
qsort_r.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
qsort.c
quad.h
random.c
rindex.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
scanc.c
skpc.c
strcat.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
strcmp.c
strcpy.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
strdup.c
strlcat.c	MFlibc: Remove extra closing parenthesis.	2005-02-03 15:51:39 +00:00
strlcpy.c	MFlibc: Remove extra closing parenthesis.	2005-02-03 15:51:39 +00:00
strlen.c
strncmp.c	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-07 00:24:33 +00:00
strncpy.c
strsep.c
strspn.c	Replace the current strspn() and strcspn() with significantly faster	2005-04-02 18:52:44 +00:00
strtol.c
strtoq.c
strtoul.c
strtouq.c
strvalid.c	Because the argument to strvalid() is a size_t, use a size_t to iterate	2005-01-29 13:34:22 +00:00
ucmpdi2.c
udivdi3.c
umoddi3.c