X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/f58700be432433386a2502ca365345a1f5bf3098..e86d75b81ebb5ecd77977170610c79d5f644675f:/src/include/surf/maxmin.h

diff --git a/src/include/surf/maxmin.h b/src/include/surf/maxmin.h
index eab59570a5..c4ba28fada 100644
--- a/src/include/surf/maxmin.h
+++ b/src/include/surf/maxmin.h
@@ -1,40 +1,117 @@
-/* Authors: Arnaud Legrand                                                  */
+/* 	$Id$	 */
+
+/* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
 
 /* This program is free software; you can redistribute it and/or modify it
-   under the terms of the license (GNU LGPL) which comes with this package. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#ifndef _SURF_MAXMIN_H
+#define _SURF_MAXMIN_H
+
+#include "xbt/misc.h"
+#include "portable.h" 
+
+#define MAXMIN_PRECISION 0.00001
+static XBT_INLINE void double_update(double *variable, double value) 
+{
+  *variable -= value;
+  if(*variable< MAXMIN_PRECISION) *variable = 0.0;
+}
 
-typedef long double xbt_maxmin_float_t;
-#define XBT_MAXMIN_FLOAT_T "%Lg"	/* for printing purposes */
+static XBT_INLINE int double_positive(double value) 
+{
+  return (value>MAXMIN_PRECISION);
+}
 
 typedef struct lmm_variable *lmm_variable_t;
 typedef struct lmm_constraint *lmm_constraint_t;
 typedef struct lmm_system *lmm_system_t;
 
-lmm_system_t lmm_system_new(void);
-void lmm_system_free(lmm_system_t sys);
+XBT_PUBLIC(lmm_system_t) lmm_system_new(void);
+XBT_PUBLIC(void) lmm_system_free(lmm_system_t sys);
+void lmm_variable_disable(lmm_system_t sys, lmm_variable_t var);
+
+XBT_PUBLIC(lmm_constraint_t) lmm_constraint_new(lmm_system_t sys, void *id,
+				    double bound_value);
+void lmm_constraint_shared(lmm_constraint_t cnst);
 
-lmm_constraint_t lmm_constraint_new(lmm_system_t sys, void *id,
-				    xbt_maxmin_float_t bound_value);
 void lmm_constraint_free(lmm_system_t sys, lmm_constraint_t cnst);
 
-lmm_variable_t lmm_variable_new(lmm_system_t sys, void *id,
-				xbt_maxmin_float_t weight_value,
-				xbt_maxmin_float_t bound,
-				int number_of_constraints);
+XBT_PUBLIC(lmm_variable_t) lmm_variable_new(lmm_system_t sys, void *id,
+				double weight_value,
+				double bound, int number_of_constraints);
 void lmm_variable_free(lmm_system_t sys, lmm_variable_t var);
-xbt_maxmin_float_t lmm_variable_getvalue(lmm_variable_t var);
+XBT_PUBLIC(double) lmm_variable_getvalue(lmm_variable_t var);
+
+XBT_PUBLIC(void) lmm_expand(lmm_system_t sys, lmm_constraint_t cnst,
+		lmm_variable_t var, double value);
+void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
+		    lmm_variable_t var, double value);
+void lmm_elem_set_value(lmm_system_t sys, lmm_constraint_t cnst,
+			lmm_variable_t var, double value);
+
+lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
+				       lmm_variable_t var, int num);
+int lmm_get_number_of_cnst_from_var(lmm_system_t sys, lmm_variable_t var);
+lmm_variable_t lmm_get_var_from_cnst(lmm_system_t sys,
+				     lmm_constraint_t cnst,
+				     lmm_variable_t * var);
 
+lmm_constraint_t lmm_get_first_active_constraint(lmm_system_t sys);
+lmm_constraint_t lmm_get_next_active_constraint(lmm_system_t sys, lmm_constraint_t cnst);
 
-void lmm_expand(lmm_system_t sys, lmm_constraint_t cnst,
-		lmm_variable_t var, xbt_maxmin_float_t value);
+void *lmm_constraint_id(lmm_constraint_t cnst);
+void *lmm_variable_id(lmm_variable_t var);
 
 void lmm_update(lmm_system_t sys, lmm_constraint_t cnst,
-		lmm_variable_t var, xbt_maxmin_float_t value);
-void lmm_update_variable_bound(lmm_variable_t var,
-			       xbt_maxmin_float_t bound);
-void lmm_update_variable_weight(lmm_variable_t var,
-				xbt_maxmin_float_t weight);
-void lmm_update_constraint_bound(lmm_constraint_t cnst,
-				 xbt_maxmin_float_t bound);
-
-void lmm_solve(lmm_system_t sys);
+		lmm_variable_t var, double value);
+void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var,
+			       double bound);
+
+
+XBT_PUBLIC(void) lmm_update_variable_latency(lmm_system_t sys, lmm_variable_t var,
+				 double delta);
+
+
+
+XBT_PUBLIC(void) lmm_update_variable_weight(lmm_system_t sys, lmm_variable_t var,
+				double weight);
+double lmm_get_variable_weight(lmm_variable_t var);
+
+XBT_PUBLIC(void) lmm_update_constraint_bound(lmm_system_t sys, lmm_constraint_t cnst,
+				 double bound);
+
+int lmm_constraint_used(lmm_system_t sys, lmm_constraint_t cnst);
+
+
+XBT_PUBLIC(void) lmm_solve(lmm_system_t sys);
+
+#ifdef HAVE_SDP
+void sdp_solve(lmm_system_t sys);
+#endif /* HAVE_SDP */
+
+void lagrange_solve(lmm_system_t sys);
+
+void lagrange_dicotomi_solve(lmm_system_t sys);
+
+
+
+/**
+ * Default functions associated to the chosen protocol. When
+ * using the lagrangian approach.
+ */
+
+XBT_PUBLIC(void) lmm_set_default_protocol_function(double (* func_f)  (lmm_variable_t var, double x),
+				       double (* func_fp) (lmm_variable_t var, double x),
+				       double (* func_fpi)(lmm_variable_t var, double x));
+
+double func_reno_f  (lmm_variable_t var, double x);
+double func_reno_fp (lmm_variable_t var, double x);
+double func_reno_fpi(lmm_variable_t var, double x);
+
+double func_vegas_f  (lmm_variable_t var, double x);
+double func_vegas_fp (lmm_variable_t var, double x);
+double func_vegas_fpi(lmm_variable_t var, double x);
+
+
+#endif				/* _SURF_MAXMIN_H */