File: interp_crc32.py

package info (click to toggle)
pypy3 7.3.19%2Bdfsg-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 212,236 kB
  • sloc: python: 2,098,316; ansic: 540,565; sh: 21,462; asm: 14,419; cpp: 4,451; makefile: 4,209; objc: 761; xml: 530; exp: 499; javascript: 314; pascal: 244; lisp: 45; csh: 12; awk: 4
file content (9 lines) | stat: -rw-r--r-- 334 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
 
from pypy.interpreter.gateway import unwrap_spec
from rpython.rlib.rarithmetic import r_uint
from rpython.rlib import rzipfile

@unwrap_spec(data='bufferstr', oldcrc='truncatedint_w')
def crc32(space, data, oldcrc=0):
    "Compute the CRC-32 incrementally."
    crc = rzipfile.crc32(data, r_uint(oldcrc))
    return space.newint(crc)