Library Initialization and Finalization

Functions
int	ppl_initialize (void)
	Initializes the Parma Polyhedra Library. This function must be called before any other function. More...
int	ppl_finalize (void)
	Finalizes the Parma Polyhedra Library. This function must be called after any other function. More...
int	ppl_set_rounding_for_PPL (void)
	Sets the FPU rounding mode so that the PPL abstractions based on floating point numbers work correctly. More...
int	ppl_restore_pre_PPL_rounding (void)
	Sets the FPU rounding mode as it was before initialization of the PPL. More...
int	ppl_irrational_precision (unsigned *p)
	Writes to p the precision parameter used for irrational calculations. More...
int	ppl_set_irrational_precision (unsigned p)
	Sets the precision parameter used for irrational calculations. More...

Detailed Description

Functions for initialization/finalization of the library, as well as setting/resetting of floating-point rounding mode.

Function Documentation

int ppl_finalize

(

void

)

Finalizes the Parma Polyhedra Library. This function must be called after any other function.

Returns

PPL_ERROR_INVALID_ARGUMENT if the library was already finalized.

Definition at line 235 of file ppl_c_implementation_common.cc.

References Parma_Polyhedra_Library::finalize(), and Parma_Polyhedra_Library::Variable::set_output_function().

int ppl_initialize

(

void

)

Initializes the Parma Polyhedra Library. This function must be called before any other function.

Returns

PPL_ERROR_INVALID_ARGUMENT if the library was already initialized.

Definition at line 173 of file ppl_c_implementation_common.cc.

References Parma_Polyhedra_Library::ANY_COMPLEXITY, Parma_Polyhedra_Library::PIP_Problem::CUTTING_STRATEGY, Parma_Polyhedra_Library::PIP_Problem::CUTTING_STRATEGY_ALL, Parma_Polyhedra_Library::PIP_Problem::CUTTING_STRATEGY_DEEPEST, Parma_Polyhedra_Library::PIP_Problem::CUTTING_STRATEGY_FIRST, Parma_Polyhedra_Library::Poly_Gen_Relation::get_flags(), Parma_Polyhedra_Library::Poly_Con_Relation::get_flags(), Parma_Polyhedra_Library::Variable::get_output_function(), Parma_Polyhedra_Library::initialize(), Parma_Polyhedra_Library::Poly_Con_Relation::is_disjoint(), Parma_Polyhedra_Library::Poly_Con_Relation::is_included(), Parma_Polyhedra_Library::MAXIMIZATION, Parma_Polyhedra_Library::MINIMIZATION, Parma_Polyhedra_Library::OPTIMIZED_MIP_PROBLEM, Parma_Polyhedra_Library::OPTIMIZED_PIP_PROBLEM, Parma_Polyhedra_Library::PIP_Problem::PIVOT_ROW_STRATEGY, Parma_Polyhedra_Library::PIP_Problem::PIVOT_ROW_STRATEGY_FIRST, Parma_Polyhedra_Library::PIP_Problem::PIVOT_ROW_STRATEGY_MAX_COLUMN, Parma_Polyhedra_Library::POLYNOMIAL_COMPLEXITY, Parma_Polyhedra_Library::MIP_Problem::PRICING, Parma_Polyhedra_Library::MIP_Problem::PRICING_STEEPEST_EDGE_EXACT, Parma_Polyhedra_Library::MIP_Problem::PRICING_STEEPEST_EDGE_FLOAT, Parma_Polyhedra_Library::MIP_Problem::PRICING_TEXTBOOK, Parma_Polyhedra_Library::Poly_Con_Relation::saturates(), Parma_Polyhedra_Library::Variable::set_output_function(), Parma_Polyhedra_Library::SIMPLEX_COMPLEXITY, Parma_Polyhedra_Library::Poly_Con_Relation::strictly_intersects(), Parma_Polyhedra_Library::Poly_Gen_Relation::subsumes(), Parma_Polyhedra_Library::UNBOUNDED_MIP_PROBLEM, Parma_Polyhedra_Library::UNFEASIBLE_MIP_PROBLEM, and Parma_Polyhedra_Library::UNFEASIBLE_PIP_PROBLEM.

int ppl_irrational_precision

(

unsigned *

p

)

Writes to p the precision parameter used for irrational calculations.

Definition at line 297 of file ppl_c_implementation_common.cc.

References Parma_Polyhedra_Library::irrational_precision().

int ppl_restore_pre_PPL_rounding

(

void

)

Sets the FPU rounding mode as it was before initialization of the PPL.

After calling this function it is absolutely necessary to call set_rounding_for_PPL() before using any PPL abstractions based on floating point numbers. This is performed automatically at finalization-time.

Definition at line 290 of file ppl_c_implementation_common.cc.

References Parma_Polyhedra_Library::restore_pre_PPL_rounding().

int ppl_set_irrational_precision

(

unsigned

p

)

Sets the precision parameter used for irrational calculations.

If p is less than or equal to INT_MAX, sets the precision parameter used for irrational calculations to p. Then, in the irrational calculations returning an unbounded rational, (e.g., when computing a square root), the lesser between numerator and denominator will be limited to 2**p.

Definition at line 304 of file ppl_c_implementation_common.cc.

References Parma_Polyhedra_Library::set_irrational_precision().

int ppl_set_rounding_for_PPL

(

void

)

Sets the FPU rounding mode so that the PPL abstractions based on floating point numbers work correctly.

This is performed automatically at initialization-time. Calling this function is needed only if restore_pre_PPL_rounding() has been previously called.

Definition at line 283 of file ppl_c_implementation_common.cc.

References Parma_Polyhedra_Library::set_rounding_for_PPL().