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 Kernel Hackers Manual 2.6. July 2010 UPPER_32_BITS(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)