/* file: log10.c G. Moody 19 July 1995
Last revised: 9 May 2018
-------------------------------------------------------------------------------
log10: common log transform of 2-column data
Copyright (C) 1995-2006 George B. Moody
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, see <http://www.gnu.org/licenses/>.
You may contact the author by e-mail (wfdb@physionet.org) or postal mail
(MIT Room E25-505A, Cambridge, MA 02139 USA). For updates to this software,
please visit PhysioNet (http://www.physionet.org/).
_______________________________________________________________________________
*/
#include <stdio.h>
#include <math.h>
#ifndef MINDOUBLE
#ifdef __STDC__
#include <float.h>
#define MINDOUBLE DBL_MIN
#define NOVALUES_H
#endif
#ifndef NOVALUES_H
#include <values.h>
#endif
#endif
#ifndef MINDOUBLE
#define MINDOUBLE 1.0e-10
#endif
main()
{
double x, y;
while (scanf("%lf%lf", &x, &y) == 2) {
if (x < MINDOUBLE) x = MINDOUBLE;
if (y < MINDOUBLE) y = MINDOUBLE;
printf("%lf %lf %lf %lf\n", log10(x), log10(y), x, y);
}
}