Clean up header includes

[slstatus.git] / components / battery.c

diff --git a/components/battery.c b/components/battery.c
index 6105a37..99e09d5 100644 (file)
--- a/components/battery.c
+++ b/components/battery.c
@@ -1,5 +1,4 @@
 /* See LICENSE file for copyright and license details. */
-#include <errno.h>
 #include <stdio.h>
 #include <string.h>
 
@@ -83,7 +82,7 @@
        battery_remaining(const char *bat)
        {
                int charge_now, current_now, m, h;
-               float timeleft;
+               double timeleft;
                char path[PATH_MAX], state[12];
 
                if (esnprintf(path, sizeof(path),
@@ -107,9 +106,13 @@
                                return NULL;
                        }
 
-                       timeleft = (float)charge_now / (float)current_now;
+                       if (current_now == 0) {
+                               return NULL;
+                       }
+
+                       timeleft = (double)charge_now / (double)current_now;
                        h = timeleft;
-                       m = (timeleft - (float)h) * 60;
+                       m = (timeleft - (double)h) * 60;
 
                        return bprintf("%dh %dm", h, m);
                }