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extern crate c2rust_bitfields;
extern crate libc;
extern crate core;
extern "C" {
fn crcspeed64native_init(fn_0: crcfn64, table: *mut [uint64_t; 256]);
fn crcspeed64native(
table: *mut [uint64_t; 256],
crc: uint64_t,
buf: *mut libc::c_void,
len: size_t,
) -> uint64_t;
}
pub type __uint8_t = libc::c_uchar;
pub type __uint64_t = libc::c_ulong;
pub type uint8_t = __uint8_t;
pub type uint64_t = __uint64_t;
pub type uint_fast8_t = libc::c_uchar;
pub type uint_fast64_t = libc::c_ulong;
pub type size_t = libc::c_ulong;
pub type crcfn64 = Option::<
unsafe extern "C" fn(uint64_t, *const libc::c_void, uint64_t) -> uint64_t,
>;
static mut crc64_table: [[uint64_t; 256]; 8] = [
[
0 as libc::c_int as uint64_t,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
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0,
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0,
0,
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0,
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0,
0,
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0,
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0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
],
[0; 256],
[0; 256],
[0; 256],
[0; 256],
[0; 256],
[0; 256],
[0; 256],
];
#[inline]
unsafe extern "C" fn crc_reflect(
mut data: uint_fast64_t,
mut data_len: size_t,
) -> uint_fast64_t {
let mut ret: uint_fast64_t = data & 0x1 as libc::c_int as libc::c_ulong;
let mut i: size_t = 1 as libc::c_int as size_t;
while i < data_len {
data >>= 1 as libc::c_int;
ret = ret << 1 as libc::c_int | data & 0x1 as libc::c_int as libc::c_ulong;
i = i.wrapping_add(1);
}
return ret;
}
#[no_mangle]
pub unsafe extern "C" fn _crc64(
mut crc: uint_fast64_t,
mut in_data: *const libc::c_void,
len: uint64_t,
) -> uint64_t {
let mut data: *const uint8_t = in_data as *const uint8_t;
let mut bit: libc::c_ulonglong = 0;
let mut offset: uint64_t = 0 as libc::c_int as uint64_t;
while offset < len {
let mut c: uint8_t = *data.offset(offset as isize);
let mut i: uint_fast8_t = 0x1 as libc::c_int as uint_fast8_t;
while i as libc::c_int & 0xff as libc::c_int != 0 {
bit = (crc & 0x8000000000000000 as libc::c_ulong) as libc::c_ulonglong;
if c as libc::c_int & i as libc::c_int != 0 {
bit = (bit == 0) as libc::c_int as libc::c_ulonglong;
}
crc <<= 1 as libc::c_int;
if bit != 0 {
crc ^= 0xad93d23594c935a9 as libc::c_ulong;
}
i = ((i as libc::c_int) << 1 as libc::c_int) as uint_fast8_t;
}
crc &= 0xffffffffffffffff as libc::c_ulong;
offset = offset.wrapping_add(1);
}
crc = crc & 0xffffffffffffffff as libc::c_ulong;
return crc_reflect(crc, 64 as libc::c_int as size_t)
^ 0 as libc::c_int as libc::c_ulong;
}
#[no_mangle]
pub unsafe extern "C" fn crc64_init() {
crcspeed64native_init(
Some(
_crc64
as unsafe extern "C" fn(
uint_fast64_t,
*const libc::c_void,
uint64_t,
) -> uint64_t,
),
crc64_table.as_mut_ptr(),
);
}
#[no_mangle]
pub unsafe extern "C" fn crc64(
mut crc: uint64_t,
mut s: *const libc::c_uchar,
mut l: uint64_t,
) -> uint64_t {
return crcspeed64native(crc64_table.as_mut_ptr(), crc, s as *mut libc::c_void, l);
}