src/timing/cl_t_td_minus.cc

   1 // operator- (const cl_time_duration&, const cl_time_duration&)
   2
   3 // General includes.
   4 #include "cl_sysdep.h"
   5
   6 // Specification.
   7 #include "cl_timing.h"
   8
   9
  10 // Implementation.
  11
  12 const cl_time_duration operator- (const cl_time_duration& a, const cl_time_duration& b)
  13 {
  14         var sintL sec = a.tv_sec - b.tv_sec;
  15         var sintL nsec = a.tv_nsec - b.tv_nsec;
  16         if (nsec < 0) {
  17                 nsec += 1000000000;
  18                 sec -= 1;
  19         }
  20         if (sec < 0) {
  21                 sec = 0; nsec = 0;
  22         }
  23         return cl_time_duration(sec,nsec);
  24 }