Lines Matching +full:a +full:- +full:bit

5  *	Author  	Copyright (c) Marc A. Viredaz, 1998
10  *	Purpose 	Definition of macros to operate on bit fields.
29  *    The macro "Fld" encodes a bit field, given its size and its shift value
30  *    with respect to bit 0.
33  *    A more intuitive way to encode bit fields would have been to use their
34  *    mask. However, extracting size and shift value information from a bit
35  *    field's mask is cumbersome and might break the assembler (255-character
36  *    line-size limit).
39  *    Size      	Size of the bit field, in number of bits.
40  *    Shft      	Shift value of the bit field with respect to bit 0.
43  *    Fld       	Encoded bit field.
54  *    the size, shift value, mask, aligned mask, and first bit of a
55  *    bit field.
58  *    Field     	Encoded bit field (using the macro "Fld").
61  *    FSize     	Size of the bit field, in number of bits.
62  *    FShft     	Shift value of the bit field with respect to bit 0.
63  *    FMsk      	Mask for the bit field.
64  *    FAlnMsk   	Mask for the bit field, aligned on bit 0.
65  *    F1stBit   	First bit of the bit field.
70 #define FMsk(Field)	(((UData (1) << FSize (Field)) - 1) << FShft (Field))
71 #define FAlnMsk(Field)	((UData (1) << FSize (Field)) - 1)
79  *    The macro "FInsrt" inserts a value into a bit field by shifting the
83  *    Value     	Bit-field value.
84  *    Field     	Encoded bit field (using the macro "Fld").
87  *    FInsrt    	Bit-field value positioned appropriately.
98  *    The macro "FExtr" extracts the value of a bit field by masking and
102  *    Data      	Data containing the bit-field to be extracted.
103  *    Field     	Encoded bit field (using the macro "Fld").
106  *    FExtr     	Bit-field value.