segStdLib.c File Reference

Standard function library for SEGRec. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <math.h>
#include "segCommon.h"
#include "segStdLib.h"

Defines
#define	MAX_STR_LEN   1024
	Maximum possible number of characters for a string.
Functions
double	logProb (double prob)
	Logarithmic operation for probability calculation.
double **	allocDblMatrix (int nrow, int ncol)
	Allocate memory for an (nrow x ncol) matrix.
void	freeDblMatrix (double **mat, int nrow)
	Free memory space of a matrix.
int **	allocIntMatrix (int nrow, int ncol)
	Allocate memory for an (nrow x ncol) matrix.
void	freeIntMatrix (int **mat, int nrow)
	Free memory space of a matrix.
short **	allocShtMatrix (int nrow, int ncol)
	Allocate memory for an (nrow x ncol) matrix.
void	freeShtMatrix (short **mat, int nrow)
	Free memory space of a matrix.
long **	allocLngMatrix (int nrow, int ncol)
	Allocate memory for an (nrow x ncol) matrix.
void	freeLngMatrix (long **mat, int nrow)
	Free memory space of a matrix.
int	countLines (FILE *ip)
	Count the number of lines in a text file.
int	probeWord (char *word, int size, FILE *fp)
	Read a word from a given file pointer without incrementing the pointer.
char *	allocCopyStr (char *source)
	Allocate memory space and copy a string to the space.
char *	extractLastDiphone (char *label)
	Extract the last diphone from a given triphone.
char *	extractFirstDiphone (char *label)
	Extract the first diphone included in the triphone.
char *	extractCentrePhone (char *label)
	Extract the centre phone of the triphone.

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Detailed Description

Standard function library for SEGRec.

Date:

05.Jul.2007

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

Revision

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Function Documentation

char* allocCopyStr

(

char *

source

)

Allocate memory space and copy a string to the space.

Parameters:

[in]

source

Return values:

	NULL	Memory allocation error
	otherwise	Pointer to the string copied

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

Note:

This function allocates memory with just the length of the input string, and copies the string to the space.

double** allocDblMatrix	(	int	nrow,
		int	ncol
	)

Allocate memory for an (nrow x ncol) matrix.

Parameters:

[in]	nrow	Number of rows
[in]	ncol	Number of columns

Return values:

	NULL	Memory allocation error
	otherwise	Pointer to the matrix allocated

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

int** allocIntMatrix	(	int	nrow,
		int	ncol
	)

Allocate memory for an (nrow x ncol) matrix.

Parameters:

[in]	nrow	Number of rows
[in]	ncol	Number of columns

Return values:

	NULL	Memory allocation error
	otherwise	Pointer to the matrix allocated

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

long** allocLngMatrix	(	int	nrow,
		int	ncol
	)

Allocate memory for an (nrow x ncol) matrix.

Parameters:

[in]	nrow	Number of rows
[in]	ncol	Number of columns

Return values:

	NULL	Memory allocation error
	otherwise	Pointer to the matrix allocated

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

short** allocShtMatrix	(	int	nrow,
		int	ncol
	)

Allocate memory for an (nrow x ncol) matrix.

Parameters:

[in]	nrow	Number of rows
[in]	ncol	Number of columns

Return values:

	NULL	Memory allocation error
	otherwise	Pointer to the matrix allocated

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

int countLines

(

FILE *

ip

)

Count the number of lines in a text file.

Parameters:

[in]

ip

File pointer to the file

Returns:

Number of lines

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

Note:

The function parse text of the file, and count the number of lines of the text. The file pointer is so rewound as to point the top of the file at the end.

char* extractCentrePhone

(

char *

label

)

Extract the centre phone of the triphone.

Parameters:

[in]

label

Triphone label

Returns:

Pointer to the diphone

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

Note:

This function overwrite the input character array.

Functions extractLastDiphone() and

extractFirstDiphone() are called internally.

See also:

extractLastDiphone() and extractFirstDiphone()

char* extractFirstDiphone

(

char *

label

)

Extract the first diphone included in the triphone.

Parameters:

[in]

label

Triphone label

Returns:

Pointer to the diphone

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

Note:

This function overwrite the input character array.

char* extractLastDiphone

(

char *

label

)

Extract the last diphone from a given triphone.

Parameters:

[in]

label

Triphone label

Returns:

Pointer to the diphone

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

Note:

This function overwrite the input character array.

void freeDblMatrix	(	double **	mat,
		int	nrow
	)

Free memory space of a matrix.

Parameters:

[in]	mat	Pointer to the matrix
[in]	nrow	Number of rows

Returns:

No return value

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

void freeIntMatrix	(	int **	mat,
		int	nrow
	)

Free memory space of a matrix.

Parameters:

[in]	mat	Pointer to the matrix
[in]	nrow	Number of rows

Returns:

No return value

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

void freeLngMatrix	(	long **	mat,
		int	nrow
	)

Free memory space of a matrix.

Parameters:

[in]	mat	Pointer to the matrix
[in]	nrow	Number of rows

Returns:

No return value

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

void freeShtMatrix	(	short **	mat,
		int	nrow
	)

Free memory space of a matrix.

Parameters:

[in]	mat	Pointer to the matrix
[in]	nrow	Number of rows

Returns:

No return value

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

double logProb

(

double

prob

)

Logarithmic operation for probability calculation.

Parameters:

[in]

prob

Probability

Returns:

Natural-logarithm of the probability

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

Note:

The maximum value of the ouput is BIGNUM.

int probeWord	(	char *	word,
		int	size,
		FILE *	fp
	)

Read a word from a given file pointer without incrementing the pointer.

Parameters:

[in,out]	word	Pointer to an array to which a read word is stored
[in]	size	Maximum possible length of the word in byte
[in]	fp	File pointer from which the word is read

Return values:

	ERROR_FREAD	File read error
	ERROR_ALLOC	Memory allocation error
	RTN_ERROR	Error: bad file format
	NO_ERROR	Successful execution

Author:

Yoshinori Shiga @ CVSSP, University of Surrey

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