lib: added function secs_to_hmsf() which converts (double) seconds

to a string 0h00m00s00

svn path=/trunk/boinc/; revision=25655

checkin_notes

@@ -3723,3 +3723,10 @@ David  7 May 2012
 
     html/user/
         view_profile.php
+
+Bernd  7 May 2012
+    - lib: added function secs_to_hmsf() which converts (double) seconds
+        to a string 0h00m00s00
+
+    lib/
+        str_util.cpp, .h

lib/str_util.cpp

@@ -211,6 +211,17 @@ int ndays_to_string (double x, int smallest_timescale, char *buf) {
     return 0;
 }
 
+// convert seconds into a string "0h00m00s00"
+void secs_to_hmsf(double secs, char*buf) {
+  uint s = secs;
+  uint f = (secs - s) * 100.0;
+  uint h = s / 3600;
+  s -= h * 3600;
+  uint m = s / 60;
+  s -= m * 60;
+  sprintf(buf, "%uh%02um%02us%02u", h, m, s, f);
+}
+
 // Convert nbytes into a string.  If total_bytes is non-zero,
 // convert the two into a fractional display (i.e. 4/16 KB)
 //

lib/str_util.h

@@ -36,6 +36,7 @@ extern void strip_whitespace(std::string&);
 #define safe_strcat(x, y) if (strlen(x)+strlen(y)<sizeof(x)) strcat(x, y)
 extern char* time_to_string(double);
 extern char* precision_time_to_string(double);
+extern void secs_to_hmsf(double, char*);
 extern std::string timediff_format(double);
 
 inline bool ends_with(std::string const& s, std::string const& suffix) {