1 /* Copyright (c) 2004-2013. 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. */
12 #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 double lmm_constraint_get_usage(lmm_constraint_t cnst);
47 XBT_PUBLIC(lmm_variable_t) lmm_variable_new(lmm_system_t sys, void *id,
50 int number_of_constraints);
51 XBT_PUBLIC(void) lmm_variable_free(lmm_system_t sys, lmm_variable_t var);
52 XBT_PUBLIC(double) lmm_variable_getvalue(lmm_variable_t var);
53 XBT_PUBLIC(double) lmm_variable_getbound(lmm_variable_t var);
55 XBT_PUBLIC(void) lmm_shrink(lmm_system_t sys, lmm_constraint_t cnst,
57 XBT_PUBLIC(void) lmm_expand(lmm_system_t sys, lmm_constraint_t cnst,
58 lmm_variable_t var, double value);
59 void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
60 lmm_variable_t var, double value);
61 void lmm_elem_set_value(lmm_system_t sys, lmm_constraint_t cnst,
62 lmm_variable_t var, double value);
64 lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
65 lmm_variable_t var, int num);
66 double lmm_get_cnst_weight_from_var(lmm_system_t sys, lmm_variable_t var,
68 int lmm_get_number_of_cnst_from_var(lmm_system_t sys, lmm_variable_t var);
69 lmm_variable_t lmm_get_var_from_cnst(lmm_system_t sys,
70 lmm_constraint_t cnst,
71 lmm_element_t * elem);
73 lmm_constraint_t lmm_get_first_active_constraint(lmm_system_t sys);
74 lmm_constraint_t lmm_get_next_active_constraint(lmm_system_t sys,
75 lmm_constraint_t cnst);
76 #ifdef HAVE_LATENCY_BOUND_TRACKING
77 XBT_PUBLIC(int) lmm_is_variable_limited_by_latency(lmm_variable_t var);
80 void *lmm_constraint_id(lmm_constraint_t cnst);
81 void *lmm_variable_id(lmm_variable_t var);
83 void lmm_update(lmm_system_t sys, lmm_constraint_t cnst,
84 lmm_variable_t var, double value);
85 void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var,
89 XBT_PUBLIC(void) lmm_update_variable_weight(lmm_system_t sys,
92 double lmm_get_variable_weight(lmm_variable_t var);
94 XBT_PUBLIC(void) lmm_update_constraint_bound(lmm_system_t sys,
95 lmm_constraint_t cnst,
98 int lmm_constraint_used(lmm_system_t sys, lmm_constraint_t cnst);
101 XBT_PUBLIC(void) lmm_solve(lmm_system_t sys);
103 XBT_PUBLIC(void) lagrange_solve(lmm_system_t sys);
104 XBT_PUBLIC(void) bottleneck_solve(lmm_system_t sys);
107 * Default functions associated to the chosen protocol. When
108 * using the lagrangian approach.
111 XBT_PUBLIC(void) lmm_set_default_protocol_function(double (*func_f)
121 XBT_PUBLIC(double func_reno_f) (lmm_variable_t var, double x);
122 XBT_PUBLIC(double func_reno_fp) (lmm_variable_t var, double x);
123 XBT_PUBLIC(double func_reno_fpi) (lmm_variable_t var, double x);
125 XBT_PUBLIC(double func_reno2_f) (lmm_variable_t var, double x);
126 XBT_PUBLIC(double func_reno2_fp) (lmm_variable_t var, double x);
127 XBT_PUBLIC(double func_reno2_fpi) (lmm_variable_t var, double x);
129 XBT_PUBLIC(double func_vegas_f) (lmm_variable_t var, double x);
130 XBT_PUBLIC(double func_vegas_fp) (lmm_variable_t var, double x);
131 XBT_PUBLIC(double func_vegas_fpi) (lmm_variable_t var, double x);
134 #endif /* _SURF_MAXMIN_H */