using_threads - returns the current Use number set by the
USE_THREADS subroutine
INTEGER FUNCTION USING_THREADS()
INTEGER*8 FUNCTION USING_THREADS_64()
F95 INTERFACE
INTEGER FUNCTION USING_THREADS()
INTEGER(8) FUNCTION USING_THREADS_64()
C INTERFACE
#include <sunperf.h>
int using_threads();
long using_threads_64();
using_threads THREADS will return the current Use number
from the USE_THREADS subroutine for the calling thread.