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 #define MAXMIN_PRECISION 0.00001
16 static XBT_INLINE void double_update(double *variable, double value)
19 if (*variable < MAXMIN_PRECISION)
23 static XBT_INLINE int double_positive(double value)
25 return (value > MAXMIN_PRECISION);
28 static XBT_INLINE int double_equals(double value1, double value2)
30 return (fabs(value1 - value2) < MAXMIN_PRECISION);
33 XBT_PUBLIC(lmm_system_t) lmm_system_new(void);
34 XBT_PUBLIC(void) lmm_system_free(lmm_system_t sys);
35 void lmm_variable_disable(lmm_system_t sys, lmm_variable_t var);
37 XBT_PUBLIC(lmm_constraint_t) lmm_constraint_new(lmm_system_t sys, void *id,
39 void lmm_constraint_shared(lmm_constraint_t cnst);
40 int lmm_constraint_is_shared(lmm_constraint_t cnst);
42 void lmm_constraint_free(lmm_system_t sys, lmm_constraint_t cnst);
44 XBT_PUBLIC(lmm_variable_t) lmm_variable_new(lmm_system_t sys, void *id,
47 int number_of_constraints);
48 void lmm_variable_free(lmm_system_t sys, lmm_variable_t var);
49 XBT_PUBLIC(double) lmm_variable_getvalue(lmm_variable_t var);
50 XBT_PUBLIC(double) lmm_variable_getbound(lmm_variable_t var);
52 XBT_PUBLIC(void) lmm_expand(lmm_system_t sys, lmm_constraint_t cnst,
53 lmm_variable_t var, double value);
54 void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
55 lmm_variable_t var, double value);
56 void lmm_elem_set_value(lmm_system_t sys, lmm_constraint_t cnst,
57 lmm_variable_t var, double value);
59 lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
60 lmm_variable_t var, int num);
61 int lmm_get_number_of_cnst_from_var(lmm_system_t sys,
63 lmm_variable_t lmm_get_var_from_cnst(lmm_system_t sys,
64 lmm_constraint_t cnst,
65 lmm_element_t * elem);
67 lmm_constraint_t lmm_get_first_active_constraint(lmm_system_t sys);
68 lmm_constraint_t lmm_get_next_active_constraint(lmm_system_t sys,
69 lmm_constraint_t cnst);
71 void *lmm_constraint_id(lmm_constraint_t cnst);
72 void *lmm_variable_id(lmm_variable_t var);
74 void lmm_update(lmm_system_t sys, lmm_constraint_t cnst,
75 lmm_variable_t var, double value);
76 void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var,
80 XBT_PUBLIC(void) lmm_update_variable_weight(lmm_system_t sys,
83 double lmm_get_variable_weight(lmm_variable_t var);
85 XBT_PUBLIC(void) lmm_update_constraint_bound(lmm_system_t sys,
86 lmm_constraint_t cnst,
89 int lmm_constraint_used(lmm_system_t sys, lmm_constraint_t cnst);
92 XBT_PUBLIC(void) lmm_solve(lmm_system_t sys);
94 XBT_PUBLIC(void) lagrange_solve(lmm_system_t sys);
95 XBT_PUBLIC(void) bottleneck_solve(lmm_system_t sys);
98 * Default functions associated to the chosen protocol. When
99 * using the lagrangian approach.
102 XBT_PUBLIC(void) lmm_set_default_protocol_function(double (*func_f)
103 (lmm_variable_t var, double x),
105 (lmm_variable_t var, double x),
107 (lmm_variable_t var, double x));
109 XBT_PUBLIC(double func_reno_f) (lmm_variable_t var, double x);
110 XBT_PUBLIC(double func_reno_fp) (lmm_variable_t var, double x);
111 XBT_PUBLIC(double func_reno_fpi) (lmm_variable_t var, double x);
113 XBT_PUBLIC(double func_reno2_f) (lmm_variable_t var, double x);
114 XBT_PUBLIC(double func_reno2_fp) (lmm_variable_t var, double x);
115 XBT_PUBLIC(double func_reno2_fpi) (lmm_variable_t var, double x);
117 XBT_PUBLIC(double func_vegas_f) (lmm_variable_t var, double x);
118 XBT_PUBLIC(double func_vegas_fp) (lmm_variable_t var, double x);
119 XBT_PUBLIC(double func_vegas_fpi) (lmm_variable_t var, double x);
122 #endif /* _SURF_MAXMIN_H */