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UPPER_32_BITS(9) Driver Basics UPPER_32_BITS(9)

NAME

upper_32_bits - return bits 32-63 of a number

SYNOPSIS

upper_32_bits(n);

ARGUMENTS

n
the number we're accessing

DESCRIPTION

A basic shift-right of a 64- or 32-bit quantity. Use this to suppress the “right shift count >= width of type” warning when that quantity is 32-bits.

COPYRIGHT

May 2018 Kernel Hackers Manual 3.16