1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
13 #include "surf/datatypes.h"
15 extern double sg_maxmin_precision;
16 #define MAXMIN_PRECISION sg_maxmin_precision
17 static XBT_INLINE void double_update(double *variable, double value)
20 if (*variable < MAXMIN_PRECISION)
24 static XBT_INLINE int double_positive(double value)
26 return (value > MAXMIN_PRECISION);
29 static XBT_INLINE int double_equals(double value1, double value2)
31 return (fabs(value1 - value2) < MAXMIN_PRECISION);
34 XBT_PUBLIC(lmm_system_t) lmm_system_new(int selective_update);
35 XBT_PUBLIC(void) lmm_system_free(lmm_system_t sys);
36 void lmm_variable_disable(lmm_system_t sys, lmm_variable_t var);
38 XBT_PUBLIC(lmm_constraint_t) lmm_constraint_new(lmm_system_t sys, void *id,
40 void lmm_constraint_shared(lmm_constraint_t cnst);
41 int lmm_constraint_is_shared(lmm_constraint_t cnst);
43 void lmm_constraint_free(lmm_system_t sys, lmm_constraint_t cnst);
45 XBT_PUBLIC(lmm_variable_t) lmm_variable_new(lmm_system_t sys, void *id,
48 int number_of_constraints);
49 void lmm_variable_free(lmm_system_t sys, lmm_variable_t var);
50 XBT_PUBLIC(double) lmm_variable_getvalue(lmm_variable_t var);
51 XBT_PUBLIC(double) lmm_variable_getbound(lmm_variable_t var);
53 XBT_PUBLIC(void) lmm_expand(lmm_system_t sys, lmm_constraint_t cnst,
54 lmm_variable_t var, double value);
55 void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
56 lmm_variable_t var, double value);
57 void lmm_elem_set_value(lmm_system_t sys, lmm_constraint_t cnst,
58 lmm_variable_t var, double value);
60 lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
61 lmm_variable_t var, int num);
62 double lmm_get_cnst_weight_from_var(lmm_system_t sys, lmm_variable_t var,
64 int lmm_get_number_of_cnst_from_var(lmm_system_t sys, lmm_variable_t var);
65 lmm_variable_t lmm_get_var_from_cnst(lmm_system_t sys,
66 lmm_constraint_t cnst,
67 lmm_element_t * elem);
69 lmm_constraint_t lmm_get_first_active_constraint(lmm_system_t sys);
70 lmm_constraint_t lmm_get_next_active_constraint(lmm_system_t sys,
71 lmm_constraint_t cnst);
72 #ifdef HAVE_LATENCY_BOUND_TRACKING
73 XBT_PUBLIC(int) lmm_is_variable_limited_by_latency(lmm_variable_t var);
76 void *lmm_constraint_id(lmm_constraint_t cnst);
77 void *lmm_variable_id(lmm_variable_t var);
79 void lmm_update(lmm_system_t sys, lmm_constraint_t cnst,
80 lmm_variable_t var, double value);
81 void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var,
85 XBT_PUBLIC(void) lmm_update_variable_weight(lmm_system_t sys,
88 double lmm_get_variable_weight(lmm_variable_t var);
90 XBT_PUBLIC(void) lmm_update_constraint_bound(lmm_system_t sys,
91 lmm_constraint_t cnst,
94 int lmm_constraint_used(lmm_system_t sys, lmm_constraint_t cnst);
97 XBT_PUBLIC(void) lmm_solve(lmm_system_t sys);
99 XBT_PUBLIC(void) lagrange_solve(lmm_system_t sys);
100 XBT_PUBLIC(void) bottleneck_solve(lmm_system_t sys);
103 * Default functions associated to the chosen protocol. When
104 * using the lagrangian approach.
107 XBT_PUBLIC(void) lmm_set_default_protocol_function(double (*func_f)
117 XBT_PUBLIC(double func_reno_f) (lmm_variable_t var, double x);
118 XBT_PUBLIC(double func_reno_fp) (lmm_variable_t var, double x);
119 XBT_PUBLIC(double func_reno_fpi) (lmm_variable_t var, double x);
121 XBT_PUBLIC(double func_reno2_f) (lmm_variable_t var, double x);
122 XBT_PUBLIC(double func_reno2_fp) (lmm_variable_t var, double x);
123 XBT_PUBLIC(double func_reno2_fpi) (lmm_variable_t var, double x);
125 XBT_PUBLIC(double func_vegas_f) (lmm_variable_t var, double x);
126 XBT_PUBLIC(double func_vegas_fp) (lmm_variable_t var, double x);
127 XBT_PUBLIC(double func_vegas_fpi) (lmm_variable_t var, double x);
130 #endif /* _SURF_MAXMIN_H */