mirror of
https://github.com/nim-lang/Nim.git
synced 2025-12-28 17:04:41 +00:00
27 lines
645 B
Nim
27 lines
645 B
Nim
#
|
|
#
|
|
# Nim's Runtime Library
|
|
# (c) Copyright 2012 Andreas Rumpf
|
|
#
|
|
# See the file "copying.txt", included in this
|
|
# distribution, for details about the copyright.
|
|
#
|
|
|
|
# set handling
|
|
|
|
|
|
proc cardSetImpl(s: ptr UncheckedArray[uint8], len: int): int {.inline.} =
|
|
var i = 0
|
|
result = 0
|
|
when defined(x86) or defined(amd64):
|
|
while i < len - 8:
|
|
inc(result, countBits64((cast[ptr uint64](s[i].unsafeAddr))[]))
|
|
inc(i, 8)
|
|
|
|
while i < len:
|
|
inc(result, countBits32(uint32(s[i])))
|
|
inc(i, 1)
|
|
|
|
proc cardSet(s: ptr UncheckedArray[uint8], len: int): int {.compilerproc, inline.} =
|
|
result = cardSetImpl(s, len)
|