.
.
: 995; 21; 34; 0.0387 ..
().
, n- x, m , ( ):
I x min I = 00...00,00...001 2 =2 -m
k m
I x max I = 11...11, 11...111 = 2 k + 2 -m
k m
() ( <1), ( ) :
1 < = | x | < = 2 n -1 ( m = 0, k = n)
( ) :
2 -n < = | x | < = 1- 2 -n ( k=0,m=n)
1-2- , - . .
:
x 1x 2.............x n = 0, x 1 x 2.............x n,
x 1x 2.............x n = x 1 x 2.............x n
:
1995 =1.995*10 1 = 19.95*10 2 =1.995*10 3 = 0.1995*10 4
21.34=02134*10 2
0.0387=0.387*10 -1
:
x= M x * q p x,
M x -
P x -
q -
q = 2 - .. , .
:
x = M x P x,
q-1 <=| M x |<1
, . () , .
q =2 M x=1 x 2x 3x 4... x n
q= 8 M x= x 1 ` x 2 ` x 3 `... x n ` 0 < x 1 <= 7;
0 < = x i <=7;
i=2, 3,... n.
q= 16 M x= x 1 x 2 x 3... x n 0< x 1<=F;
0< x i <=F;
i=2, 3,... n.
( > 0) ( p x< 0) .
:
1. ?
2. ?
3. ()?
4. :
|
|
0.567
0.00123
0.000134
45.123
5.345
987.4
0.345
: [1], [2] ., [18], [19].
6.