gcc/f/runtime/libF77/dtime_.c

   1 #include "time.h"
   2 #ifndef USE_CLOCK
   3 #include "sys/types.h"
   4 #include "sys/times.h"
   5 #endif
   6
   7 #undef Hz
   8 #ifdef CLK_TCK
   9 #define Hz CLK_TCK
  10 #else
  11 #ifdef HZ
  12 #define Hz HZ
  13 #else
  14 #define Hz 60
  15 #endif
  16 #endif
  17
  18  float
  19 #ifdef KR_headers
  20 dtime_(tarray) float *tarray;
  21 #else
  22 dtime_(float *tarray)
  23 #endif
  24 {
  25 #ifdef USE_CLOCK
  26 #ifndef CLOCKS_PER_SECOND
  27 #define CLOCKS_PER_SECOND Hz
  28 #endif
  29         static double t0;
  30         double t = clock();
  31         tarray[1] = 0;
  32         tarray[0] = (t - t0) / CLOCKS_PER_SECOND;
  33         t0 = t;
  34         return tarray[0];
  35 #else
  36         struct tms t;
  37         static struct tms t0;
  38
  39         times(&t);
  40         tarray[0] = (t.tms_utime - t0.tms_utime) / Hz;
  41         tarray[1] = (t.tms_stime - t0.tms_stime) / Hz;
  42         t0 = t;
  43         return tarray[0] + tarray[1];
  44 #endif
  45         }