rational.h File Reference

Data Structures
struct	Rational

Typedefs
typedef struct _rationalmatrix	RationalMatrix

Functions
Rational	rtnl_zero (void)
Rational	rtnl (signed long long int num, signed long long int den)
double	rtnl_as_double (Rational r)
Rational	rtnl_mul (Rational a, Rational b)
Rational	rtnl_div (Rational a, Rational b)
Rational	rtnl_add (Rational a, Rational b)
Rational	rtnl_sub (Rational a, Rational b)
signed int	rtnl_cmp (Rational a, Rational b)
Rational	rtnl_abs (Rational a)
char *	rtnl_format (Rational rt)
Rational *	rtnl_list (signed int num_min, signed int num_max, signed int den_min, signed int den_max, int *pn)
RationalMatrix *	rtnl_mtx_new (unsigned int rows, unsigned int cols)
RationalMatrix *	rtnl_mtx_copy (const RationalMatrix *m)
Rational	rtnl_mtx_get (const RationalMatrix *m, int i, int j)
void	rtnl_mtx_set (const RationalMatrix *m, int i, int j, Rational v)
RationalMatrix *	rtnl_mtx_from_intmat (const IntegerMatrix *m)
RationalMatrix *	rtnl_mtx_identity (int rows)
IntegerMatrix *	intmat_from_rtnl_mtx (const RationalMatrix *m)
void	rtnl_mtx_free (RationalMatrix *mtx)
RationalMatrix *	rtnlmtx_times_rtnlmtx (const RationalMatrix *A, const RationalMatrix *B)
RationalMatrix *	rtnlmtx_times_intmat (const RationalMatrix *A, const IntegerMatrix *B)
RationalMatrix *	intmat_times_rtnlmtx (const IntegerMatrix *a, const RationalMatrix *b)
int	transform_fractional_coords_rtnl (const RationalMatrix *P, const Rational *ivec, Rational *ans)
void	transform_fractional_coords_rtnl_inverse (const RationalMatrix *P, const Rational *vec, Rational *ans)
void	rtnl_mtx_print (const RationalMatrix *m)
Rational	rtnl_mtx_det (const RationalMatrix *m)
int	rtnl_mtx_is_identity (const RationalMatrix *m)
int	rtnl_mtx_is_perm (const RationalMatrix *m)

Detailed Description

Rational numbers (including rational matrices)

Typedef Documentation

RationalMatrix

typedef struct _rationalmatrix RationalMatrix

The RationalMatrix is an opaque data structure representing a matrix of rational numbers.

Function Documentation

rtnl_format()

char * rtnl_format

(

Rational

rt

)

Parameters

rt	A Rational

Formats rt as a string

Returns

A string which should be freed by the caller

rtnl_mtx_new()

RationalMatrix * rtnl_mtx_new	(	unsigned int	rows,
		unsigned int	cols
	)

Parameters

rows	Number of rows that the new matrix is to have
cols	Number of columns that the new matrix is to have

Allocates a new RationalMatrix with all elements set to zero.

Returns

A new RationalMatrix, or NULL on error.

rtnl_mtx_print()

void rtnl_mtx_print

(

const RationalMatrix *

m

)

Parameters

m	A RationalMatrix

Prints m to stderr.