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.

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_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.

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.

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.

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.

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.