libf2c/libF77/dtime_.c

   1 #include "time.h"
   2 #ifndef USE_CLOCK
   3 #define _INCLUDE_POSIX_SOURCE   /* for HP-UX */
   4 #define _INCLUDE_XOPEN_SOURCE   /* for HP-UX */
   5 #include "sys/types.h"
   6 #include "sys/times.h"
   7 #endif
   8
   9 #undef Hz
  10 #ifdef CLK_TCK
  11 #define Hz CLK_TCK
  12 #else
  13 #ifdef HZ
  14 #define Hz HZ
  15 #else
  16 #define Hz 60
  17 #endif
  18 #endif
  19
  20  double
  21 #ifdef KR_headers
  22 dtime_(tarray) float *tarray;
  23 #else
  24 dtime_(float *tarray)
  25 #endif
  26 {
  27 #ifdef USE_CLOCK
  28 #ifndef CLOCKS_PER_SECOND
  29 #define CLOCKS_PER_SECOND Hz
  30 #endif
  31         static double t0;
  32         double t = clock();
  33         tarray[1] = 0;
  34         tarray[0] = (t - t0) / CLOCKS_PER_SECOND;
  35         t0 = t;
  36         return tarray[0];
  37 #else
  38         struct tms t;
  39         static struct tms t0;
  40
  41         times(&t);
  42         tarray[0] = (t.tms_utime - t0.tms_utime) / Hz;
  43         tarray[1] = (t.tms_stime - t0.tms_stime) / Hz;
  44         t0 = t;
  45         return tarray[0] + tarray[1];
  46 #endif
  47         }