Is there a standard Linux Kernel bit operation macro, which returns the number of bits set in an unsigned long ?
Is there a standard Linux Kernel bit operation macro, which returns the number of
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Is there a standard Linux Kernel bit operation macro, which returns the number of bits set in an unsigned long ?
You can use:
hweight_longfunction in
include/linux/bitops.hOthwerwise Linux kernel uses
gccwith GNU extensions andgccalso provides these builtins:http://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html