+a benchmark function looks like
+ void bench_foo(int N) {
+ for (i = 0; i < N; i++)
+ foo();
+ }
+benchmark functions are repeatedly called with an increasing
+N until the running time is long enough, then time/N is printed
+
+see Makefile.inc for build system details
+see common/t.c for test details
+see common/b.c for benchmark details