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/*

  This is part of Patchwork13! the real-time data synthesis toolkit.
  http://patchwork13.sourceforge.net/

  pw13_std - the patchwork13 standard patches library
  Copyright (C) 2005 Bruno Malaquin <broen.42@gmail.com>
  
  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.

*

  by Bruno Malaquin

  powa.pw13p.c  -  int power patch

*/
#include <pw13/pw13.h>
#include <std/int.pw13dt.h>

static void patch_pump (Pw13_Patch *p, Pw13_Time *time)
{
  int a,b,res;
  pw13_pump_sources (p, time);
  
  a = pw13_int_input_val(p->input);
  b = pw13_int_input_val(p->input+1);
  
  if( b==0 ){
    pw13_int_output_val (p->output[0]) = 1;
  }else{
    res = a;
    if( b > 0){
      while( b>1 ){
	res = res * a;
	b--;
      }
    }else{
      while( b<-1 ){
	res = 1 / (res * a);
	b++;
      }
    }
    pw13_int_output_val (p->output[0]) = res;
  }
}


PW13_EXPORT
int pw13_dl_patch_class_init (const char *name, Pw13_Patch *p, void *param)
{
  pw13_patch_init (name, p, 1, 1);
  pw13_int_input ("A", p->input, p, 0);
  pw13_int_input ("B", p->input+1, p, 0);
  pw13_int_output ("A^B", p->output, p);
  p->pump = patch_pump;
  param = param;
  return 1;
}
thodg/patchwork13/std/int/powa.pw13p.c

Commit

std/int/powa.pw13p.c
