Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
Next revision Both sides next revision
language:controlflow [2019/04/18 14:25]
rajit [Selections]
language:controlflow [2022/05/13 08:45]
rajit
Line 11: Line 11:
 An example of the loop construct in ACT is shown below: An example of the loop construct in ACT is shown below:
  
-<code>+<code act>
 ( i : 10 : bool x[i..i]; ) ( i : 10 : bool x[i..i]; )
 </code> </code>
Line 20: Line 20:
 range ''0..9''. The body of the loop is the statement ''bool x[i..i];''. The effect of this statement is the same as range ''0..9''. The body of the loop is the statement ''bool x[i..i];''. The effect of this statement is the same as
  
-<code>+<code act>
 bool x[0..0]; bool x[0..0];
 bool x[1..1]; bool x[1..1];
Line 31: Line 31:
 is shown below: is shown below:
  
-<code>+<code act>
 register r[1..8]; register r[1..8];
 (i : 1..8 : r[i](in[i],out[i],control); ) (i : 1..8 : r[i](in[i],out[i],control); )
Line 48: Line 48:
 command language. command language.
  
-<code>+<code act>
 pint i; pint i;
 i=0; i=0;
Line 65: Line 65:
  
 In production rule bodies, the loop In production rule bodies, the loop
-<code>+<code act>
 (&i:3: x[i]) (&i:3: x[i])
 </code> </code>
 expands to expands to
-<code>+<code act>
 x[0] & x[1] & x[2] x[0] & x[1] & x[2]
 </code> </code>
Line 82: Line 82:
 syntax of a selection statement is: syntax of a selection statement is:
  
-<code>+<code act>
 [ boolean_expression -> body  [ boolean_expression -> body 
 [] boolean_expression -> body [] boolean_expression -> body
Line 95: Line 95:
 something special for register 0 as follows: something special for register 0 as follows:
  
-<code>+<code act>
 (i : 32 :  (i : 32 : 
-    [ i = 0 -> r0(in[i],out[i],control) +    [ i = 0 -> r0(in[i],out[i],control); 
-   [] else -> r[i](in[i],out[i],control)+   [] else -> r[i](in[i],out[i],control);
     ]     ]
 ) )
Line 116: Line 116:
 definition can be used to create a tree structure. definition can be used to create a tree structure.
  
-<code>+<code act>
 template<pint N> template<pint N>
 defproc tree (bool a[N]) defproc tree (bool a[N])
 { {
-  [ N = 1 -> leaf l(a[0]) +  [ N = 1 -> leaf l(a[0]);
  [] N > 1 -> tree<N/2> t0(a[0..N/2-1]);  [] N > 1 -> tree<N/2> t0(a[0..N/2-1]);
-             tree<N-N/2> t1(a[N/2..N-1])+             tree<N-N/2> t1(a[N/2..N-1]);
   ]   ]
 } }