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convenience.c
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convenience.c
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/*
* Copyright (C) 2013-2014 by Kyle Keen <[email protected]>
*
* 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/>.
*/
/* a collection of user friendly tools
* todo: use strtol for more flexible int parsing
* */
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#ifndef _WIN32
#include <unistd.h>
#else
#include <windows.h>
#include <fcntl.h>
#include <io.h>
#define _USE_MATH_DEFINES
#endif
#include <math.h>
#include "rtl-sdr.h"
double atofs(char *s)
/* standard suffixes */
{
char last;
int len;
double suff = 1.0;
len = strlen(s);
last = s[len-1];
s[len-1] = '\0';
switch (last) {
case 'g':
case 'G':
suff *= 1e3;
case 'm':
case 'M':
suff *= 1e3;
case 'k':
case 'K':
suff *= 1e3;
suff *= atof(s);
s[len-1] = last;
return suff;
}
s[len-1] = last;
return atof(s);
}
double atoft(char *s)
/* time suffixes, returns seconds */
{
char last;
int len;
double suff = 1.0;
len = strlen(s);
last = s[len-1];
s[len-1] = '\0';
switch (last) {
case 'h':
case 'H':
suff *= 60;
case 'm':
case 'M':
suff *= 60;
case 's':
case 'S':
suff *= atof(s);
s[len-1] = last;
return suff;
}
s[len-1] = last;
return atof(s);
}
double atofp(char *s)
/* percent suffixes */
{
char last;
int len;
double suff = 1.0;
len = strlen(s);
last = s[len-1];
s[len-1] = '\0';
switch (last) {
case '%':
suff *= 0.01;
suff *= atof(s);
s[len-1] = last;
return suff;
}
s[len-1] = last;
return atof(s);
}
// vim: tabstop=8:softtabstop=8:shiftwidth=8:noexpandtab