#include <u.h>
#include <libc.h>

// dbm to Watts

void
main(int argc, char **argv)
{

	double d;

	if (argc != 2) {
		fprint(2, "usage: dbm value\n");
		exits("usage");
	}

	d = pow(10, strtod(argv[1], 0)/10.0L);
	d /= 1000.0L;
	print("%g\n", d);
	exits(0);
}