thodg/patchwork13/pw13/time.c

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• Hash : 94046104
  Author : Thomas de Grivel
  Date : 2020-02-24T15:19:27
  

  import from branch patchwork13-0.1 on SourceForge.net

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• pw13/time.c

• /*
  
    This is part of Patchwork13! the real-time data synthesis toolkit.
    http://patchwork13.sourceforge.net/
  
    pw13 - the patchwork13 core library
    Copyright (C) 2005 Thomas de Grivel <billitch@yahoo.fr>
  
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.
  
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
  
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  
  *
  
    time.h  -  give us some time
  
  */
  #ifdef WIN32
  #  include <windows.h>
  #else
  #  include <unistd.h>
  #endif
  
  #include <stdlib.h>
  #include <string.h>
  #include "data.h"
  #include "time.h"
  
  
  void pw13_time_of_float(Pw13_Time *t, double f)
  {
    t->seconds = (long) f;
    t->frac = f - t->seconds;
    t->ticks = 0;
  }
  
  
  void pw13_time_zero(Pw13_Time *time)
  {
    time->seconds = 0;
    time->frac = 0;
    time->ticks = 0;
  }
  
  
  void pw13_time_add(Pw13_Time *result, Pw13_Time *a, Pw13_Time *b)
  {
    int i;
    result->frac = a->frac + b->frac;
    i = (int) result->frac;
    result->seconds = i + a->seconds + b->seconds;
    result->frac -= i;
    result->ticks = a->ticks + b->ticks;
  }
  
  
  void pw13_time_sub(Pw13_Time *result, Pw13_Time *a, Pw13_Time *b)
  {
    int i;
    result->frac = a->frac - b->frac;
    i = (int) result->frac;
    result->seconds = i + a->seconds - b->seconds;
    result->frac -= i;
    result->ticks = a->ticks - b->ticks;
  }
  
  
  void pw13_time_increase(Pw13_Time *result, Pw13_Time *delta)
  {
    int i;
    result->frac += delta->frac;
    i = (int) result->frac;
    result->frac -= i;
    result->seconds += i + delta->seconds;
    result->ticks += delta->ticks;
  }
  
  
  void pw13_time_decrease (Pw13_Time *result, Pw13_Time *delta)
  {
    int i;
    result->frac -= delta->frac;
    i = (int) result->frac;
    result->frac -= i;
    result->seconds -= i + delta->seconds;
    result->ticks -= delta->ticks;
  }
  
  
  int pw13_time_compare (Pw13_Time *a, Pw13_Time *b)
  {
    if (a->seconds < b->seconds)
      return -1;
    else if (a->seconds > b->seconds)
      return 1;
    else if (a->frac < b->frac)
      return -1;
    else if (a->frac > b->frac)
      return 1;
    else if (a->ticks < b->ticks)
      return -1;
    else if (a->ticks > b->ticks)
      return 1;
    return 0;
  }
  
  
  Pw13_Data * pw13_time_data (Pw13_Time *t)
  {
    Pw13_Data *d = pw13_data_bytes (sizeof (Pw13_Time));
    if (t)
      memcpy (d+1, t, sizeof (Pw13_Time));
    else
      pw13_time_zero (pw13_data_time (d));
    return d;
  }
  
  
  void pw13_msleep (unsigned long milliseconds)
  {
  #ifdef WIN32
    Sleep (milliseconds);
  #else
    usleep (milliseconds * 1000);
  #endif
  }
  

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