returns the array size of a function table slot
fsize returns the size of an array in a function table slot created with makegen. For example: if you issue the command:
makegen(4, 10, 1000, 1, 2, 3, 4)
and then in an instrument say:
int size;
size = fsize(4);
the integer size will be the size of the array in in the function table slot (in floating-point words) as specified in the third argument of the makegen scorefile command. fsize issues an error message and terminates the job if no function with that number has been generated.