diff options
| author | ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-07-25 06:28:16 +0000 |
|---|---|---|
| committer | ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-07-25 06:28:16 +0000 |
| commit | 75d716e297bc9012a549da20ef1fa6180d8f050e (patch) | |
| tree | d8fbeeedab192d77af35ac46c8c0b458e3da1838 /libiberty | |
| parent | 57811700d42143f211f94f83de8806a537e2a16a (diff) | |
| download | gcc-75d716e297bc9012a549da20ef1fa6180d8f050e.tar.gz | |
include/:
PR bootstrap/40854
* libiberty.h (xcrc32): Rename from crc32.
libiberty/:
PR bootstrap/40854
* crc32.c (xcrc32): Rename from crc32.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@150075 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libiberty')
| -rw-r--r-- | libiberty/ChangeLog | 5 | ||||
| -rw-r--r-- | libiberty/crc32.c | 15 |
2 files changed, 19 insertions, 1 deletions
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog index 516a90d58fc..6033935edc3 100644 --- a/libiberty/ChangeLog +++ b/libiberty/ChangeLog @@ -1,5 +1,10 @@ 2009-07-24 Ian Lance Taylor <iant@google.com> + PR bootstrap/40854 + * crc32.c (xcrc32): Rename from crc32. + +2009-07-24 Ian Lance Taylor <iant@google.com> + * crc32.c: New file. * Makefile.in: Rebuild dependencies. (CFILES): Add crc32.c. diff --git a/libiberty/crc32.c b/libiberty/crc32.c index 2171a3d1c7f..c12916b5216 100644 --- a/libiberty/crc32.c +++ b/libiberty/crc32.c @@ -150,12 +150,25 @@ protocol for the @samp{qCRC} command. In order to get the same results as gdb for a block of data, you must pass the first CRC parameter as @code{0xffffffff}. +This CRC can be specified as: + + Width : 32 + Poly : 0x04c11db7 + Init : parameter, typically 0xffffffff + RefIn : false + RefOut : false + XorOut : 0 + +This differs from the "standard" CRC-32 algorithm in that the values +are not reflected, and there is no final XOR value. These differences +make it easy to compose the values of multiple blocks. + @end deftypefn */ unsigned int -crc32 (const unsigned char *buf, int len, unsigned int init) +xcrc32 (const unsigned char *buf, int len, unsigned int init) { unsigned int crc = init; while (len--) |