On Tue, 2018-07-24 at 16:04 -0600, Brian Vandenberg wrote: > In a plugin I wrote I created a function with the following form / > function: > > $ cat makefile > ASDF := something > $(timeit 100, ${ASDF}) > $ make > makefile:2 Time taken: mean: 232, stdev: 81.719765 > > make: *** No targets. Stop. > > ... where "timeit" is implemented using the online mean/variance > estimate from Knuth's TAoCP. It evaluates the 2nd argument a number > of times equal to what the 1st argument evaluates to then spits out a > mean / std deviation across those runs. > > I want to contribute this function back to the make project, however > there's a problem if it gets accepted: calculating the standard > deviation requires calling sqrt from math.h / libmath. > > Am I safe to assume that adding a dependence on math.h / libmath > isn't an option?

IIRC, math.h / sqrt() is defined in the ISO C90 standard and so it should be portable. However, I'm not sure that this function is sufficiently generic to be added as a built-in function. Can you provide use-cases for it? Cheers! _______________________________________________ Bug-make mailing list Bug-make@gnu.org https://lists.gnu.org/mailman/listinfo/bug-make