//
// Find cases where our macros can be used.
//
// Applies to userland and kernel code.
//
// Order matters in this file because some macros contain other macros.
//

@@
expression A, I;
@@
(
-A[I/NBBY] |= 1<<(I%NBBY)
+setbit(A, I)
|
-A[I/8] |= 1<<(I%8)
+setbit(A, I)
|
-A[I/NBBY] &= ~(1<<(I%NBBY))
+clrbit(A, I)
|
-A[I/8] &= ~(1<<(I%8))
+clrbit(A, I)
|
-(A[I/NBBY] & (1<<(I%NBBY))) == 0
+isclr(A, I)
|
-(A[I/8] & (1<<(I%8))) == 0
+isclr(A, I)
|
-A[I/NBBY] & (1<<(I%NBBY))
+isset(A, I)
|
-A[I/8] & (1<<(I%8))
+isset(A, I)
)

@@
type E;
E[] T;
@@
(
-sizeof(T)/sizeof(E)
+NELEM(T)
|
-sizeof(T)/sizeof(*T)
+NELEM(T)
|
-sizeof(T)/sizeof(T[...])
+NELEM(T)
)

@@
expression X;
@@
-((X-1)&X) == 0
+powerof2(X)

@@
expression X, Y;
@@
(
-((X+Y-1)/Y)*Y
+roundup(X, Y)
|
-((X+(Y-1))/Y)*Y
+roundup(X, Y)
|
-(X+(Y-1))/Y
+howmany(X, Y)
|
-(X+Y-1)&(~(Y-1))
+roundup2(X, Y)
|
-(X+(Y-1))&(~(Y-1))
+roundup2(X, Y)
|
-X&(~(Y-1))
+rounddown2(X, Y)
|
-(X/Y)*Y
+rounddown(X, Y)
)