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__BITMAP_SHIFT_RIGHT(9) Basic Kernel Library Functions __BITMAP_SHIFT_RIGHT(9)

NAME

__bitmap_shift_right - logical right shift of the bits in a bitmap

SYNOPSIS

void __bitmap_shift_right(unsigned long * dst, const unsigned long * src, unsigned shift, unsigned nbits);

ARGUMENTS

unsigned long * dst

destination bitmap

const unsigned long * src

source bitmap

unsigned shift

shift by this many bits

unsigned nbits

bitmap size, in bits

DESCRIPTION

Shifting right (dividing) means moving bits in the MS -> LS bit direction. Zeros are fed into the vacated MS positions and the LS bits shifted off the bottom are lost.

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July 2017 Kernel Hackers Manual 4.11