Returns maximum vector length allowed.
(scalar) maximum vector length allowed.
y = maxvec; print y; 20000.000
maxvec() returns the value in the global scalar __maxvec, which can be
reset in the calling program.
maxvec() is called by
Run-Time Library functions and applications when
determining how many rows can be read from a dataset in one call to
Using a value that is too large can cause excessive disk thrashing. The trick is to allow the algorithm making the disk reads to execute entirely in RAM.