libf2c/libF77/dtime_.c

   1 #include "time.h"
   2
   3 #ifdef MSDOS
   4 #undef USE_CLOCK
   5 #define USE_CLOCK
   6 #endif
   7
   8 #ifndef USE_CLOCK
   9 #define _INCLUDE_POSIX_SOURCE   /* for HP-UX */
  10 #define _INCLUDE_XOPEN_SOURCE   /* for HP-UX */
  11 #include "sys/types.h"
  12 #include "sys/times.h"
  13 #endif
  14
  15 #undef Hz
  16 #ifdef CLK_TCK
  17 #define Hz CLK_TCK
  18 #else
  19 #ifdef HZ
  20 #define Hz HZ
  21 #else
  22 #define Hz 60
  23 #endif
  24 #endif
  25
  26 double
  27 dtime_ (float *tarray)
  28 {
  29 #ifdef USE_CLOCK
  30 #ifndef CLOCKS_PER_SECOND
  31 #define CLOCKS_PER_SECOND Hz
  32 #endif
  33   static double t0;
  34   double t = clock ();
  35   tarray[1] = 0;
  36   tarray[0] = (t - t0) / CLOCKS_PER_SECOND;
  37   t0 = t;
  38   return tarray[0];
  39 #else
  40   struct tms t;
  41   static struct tms t0;
  42
  43   times (&t);
  44   tarray[0] = (double) (t.tms_utime - t0.tms_utime) / Hz;
  45   tarray[1] = (double) (t.tms_stime - t0.tms_stime) / Hz;
  46   t0 = t;
  47   return tarray[0] + tarray[1];
  48 #endif
  49 }