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 #ifdef KR_headers
  28 dtime_(tarray) float *tarray;
  29 #else
  30 dtime_(float *tarray)
  31 #endif
  32 {
  33 #ifdef USE_CLOCK
  34 #ifndef CLOCKS_PER_SECOND
  35 #define CLOCKS_PER_SECOND Hz
  36 #endif
  37         static double t0;
  38         double t = clock();
  39         tarray[1] = 0;
  40         tarray[0] = (t - t0) / CLOCKS_PER_SECOND;
  41         t0 = t;
  42         return tarray[0];
  43 #else
  44         struct tms t;
  45         static struct tms t0;
  46
  47         times(&t);
  48         tarray[0] = (t.tms_utime - t0.tms_utime) / Hz;
  49         tarray[1] = (t.tms_stime - t0.tms_stime) / Hz;
  50         t0 = t;
  51         return tarray[0] + tarray[1];
  52 #endif
  53         }