Changes

While [[Bitboard Serialization|traversing sets]], one may combine bitscanning with reset found bit. That implies passing the bitboard per reference or pointer, and tends to confuse compilers to keep all inside registers inside a typical serialization loop <ref>[https://www.stmintz.com/ccc/index.php?id=283655 Bitscan] by [[Matt Taylor]], [[CCC]], February 11, 2003</ref> <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=70202 CPW bitscan with reset could someone explain this line?] by [[Mahmoud Uthman]], [[CCC]], March 14, 2019</ref> .