compiler/stdc/difftime.c

   1 /*
   2     Copyright © 1995-2003, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Return the number of seconds elapsed between time2 and time1.
   6 */
   7
   8 /*****************************************************************************
   9
  10     NAME */
  11 #ifndef AROS_NOFPU
  12 #include <time.h>
  13
  14         double difftime (
  15
  16 /*  SYNOPSIS */
  17         time_t time2,
  18         time_t time1)
  19
  20 /*  FUNCTION
  21        difftime() returns the number of seconds elapsed between
  22        time time2 and time time1.
  23
  24     INPUTS
  25         time2 - time value from which time1 is subtracted
  26         time1 - time value that is subtracted from time2
  27
  28     RESULT
  29         The number of seconds elapsed in double precision.
  30
  31     NOTES
  32
  33     EXAMPLE
  34         time_t tt1, tt2;
  35         double secs;
  36
  37         time (&tt1);
  38         ...
  39         time (&tt2);
  40
  41         secs = difftime(tt2, tt1);
  42
  43     BUGS
  44
  45     SEE ALSO
  46         time(), ctime(), asctime(), localtime()
  47
  48     INTERNALS
  49
  50 ******************************************************************************/
  51 {
  52     return (double)(time2 - time1);
  53
  54 } /* difftime */
  55
  56 #else
  57
  58 void difftime(void)
  59 {
  60         return;
  61 }
  62
  63 #endif /* AROS_NOFPU */