The MVBITS subroutine transfers a bit field from one storage location (source) to a field in a second storage location (destination). The call to MVBITS takes the following form:

CALL MVBITS (m,i,len,n,j)

m

Is an integer variable or array element that represents the source location (the location from which a bit field is transferred).

i

Is an integer expression that identifies the first bit position in the field transferred from m.

len

Is an integer expression that identifies the length of the field transferred from m.

n

Is an integer variable or array element that represents the destination location (the location to which a bit field is transferred).

j

Is an integer expression that identifies the starting position, within n, for the bits being transferred.

The MVBITS subroutine transfers len bits from positions i through i+len-1 of the source location m to positions j through j+len- 1 of the destination location n. Other bits of the destination location and all of the bits of the source location remain unchanged.