__BITMAP_SHIFT_LEFT(9) Basic Kernel Library Functions __BITMAP_SHIFT_LEFT(9)NAME
__bitmap_shift_left - logical left shift of the bits in a bitmap
SYNOPSIS
void __bitmap_shift_left(unsigned long * dst, const unsigned long * src, int shift, int bits);
ARGUMENTS
dst
destination bitmap
src
source bitmap
shift
shift by this many bits
bits
bitmap size, in bits
DESCRIPTION
Shifting left (multiplying) means moving bits in the LS -> MS direction. Zeros are fed into the vacated LS bit positions and those MS bits
shifted off the top are lost.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 __BITMAP_SHIFT_LEFT(9)
Check Out this Related Man Page
DPGEN_SHIFT(3) Alliance - genlib User's Manual DPGEN_SHIFT(3)NAME
DPGEN_SHIFT - Shifter Macro-Generator
SYNOPSIS
#include <genlib.h>
void GENLIB_MACRO (DPGEN_SHIFT, char *modelname, long flags, long N);
DESCRIPTION
Generate a N bits shifter with name modelname.
How it works :
o if the op[0] signal is set to '1' performs a right shift, performs a left shift otherwise.
o if the op[1] signal is set to '1' performs an arithmetic shift (only meaningful in case of a right shift).
o shamt : specifies the shift amount. The width of this signal (Y) is computed from the operator's width : Y = ceil(log2(N)) - 1.
TERMINAL NAMES
1. op : select the kind of shift (input, 2 bit).
2. shamt : the shift amount (input, Y bits).
3. i : value to shift (input, N bits).
4. o : output (N bits).
5. vdd : power.
6. vss : ground.
EXAMPLE
GENLIB_MACRO(DPGEN_SHIFT, "model_shift_32",
F_BEHAV|F_PLACE,
32);
GENLIB_LOINS("model_shift_32",
"instance1_shift_32",
"op[1:0]",
"shamt[4:0]",
"x[31:0]",
"y[31:0]",
"vdd", "vss", NULL);
SEE ALSO GENLIB_MACRO(3), genlib(1)ASIM /LIP6 30 July 2004 DPGEN_SHIFT(3)
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