XBT_PUBLIC(void) TRACE_vm_variable_set_with_time (double time, const char *vm, const char *variable, double value);
XBT_PUBLIC(void) TRACE_vm_variable_add_with_time (double time, const char *vm, const char *variable, double value);
XBT_PUBLIC(void) TRACE_vm_variable_sub_with_time (double time, const char *vm, const char *variable, double value);
XBT_PUBLIC(void) TRACE_vm_variable_set_with_time (double time, const char *vm, const char *variable, double value);
XBT_PUBLIC(void) TRACE_vm_variable_add_with_time (double time, const char *vm, const char *variable, double value);
XBT_PUBLIC(void) TRACE_vm_variable_sub_with_time (double time, const char *vm, const char *variable, double value);