util.h File Reference

#include <cstdlib>
#include <cstdint>
#include <string>
#include <cmath>
#include <string.h>

Go to the source code of this file.

util.h - General utilities.
#define	_TRUNCATE   ((size_t)-1)
typedef int	errno_t
unsigned	SyncRandSeed
uint32_t	FileChecksums
	Sync random seed value. More...
char *	optarg
int	optind
int	opterr
int	optopt
void	InitSyncRand ()
	checksums of all loaded lua files More...
int	SyncRand ()
	Initialize the syncron rand. More...
int	SyncRand (int max)
	Syncron rand. More...
int	MyRand ()
	Syncron rand. More...
long	isqrt (long num)
	Compute a square root using ints. More...
int	square (int v)
template<typename T >
void	clamp (T *value, T minValue, T maxValue)
uint32_t	fletcher32 (const std::string &content)
errno_t	strcpy_s (char *dst, size_t dstsize, const char *src)
errno_t	strncpy_s (char *dst, size_t dstsize, const char *src, size_t count)
errno_t	strcat_s (char *dst, size_t dstsize, const char *src)
char *	strcasestr (const char *str, const char *substr)
	case insensitive strstr More...
size_t	strnlen (const char *str, size_t strsize)
	determine length of a fixed-length string More...
int	getopt (int argc, char *const argv[], const char *optstring)
int	GetClipboard (std::string &str)
void	SetClipboard (std::string &str)
int	UTF8GetNext (const std::string &text, int curpos)
int	UTF8GetPrev (const std::string &text, int curpos)
bool	supportsSSE2 ()
bool	supportsAVX ()
void *	aligned_malloc (size_t alignment, size_t size)
void	aligned_free (void *block)

Macro Definition Documentation

_TRUNCATE

#define _TRUNCATE   ((size_t)-1)

Typedef Documentation

errno_t

typedef int errno_t

Function Documentation

aligned_free()

void aligned_free

(

void *

block

)

aligned_malloc()

void* aligned_malloc	(	size_t	alignment,
		size_t	size
	)

clamp()

template<typename T >

void clamp	(	T *	value,
		T	minValue,
		T	maxValue
	)

fletcher32()

uint32_t fletcher32

(

const std::string &

content

)

GetClipboard()

int GetClipboard

(

std::string &

str

)

Paste text from the clipboard

getopt()

int getopt	(	int	argc,
		char *const	argv[],
		const char *	optstring
	)

InitSyncRand()

void InitSyncRand

(

)

checksums of all loaded lua files

Inititalize sync rand seed.

isqrt()

long isqrt

(

long

num

)

Compute a square root using ints.

Compute a square root using ints

Uses John Halleck's method, see http://www.cc.utah.edu/~nahaj/factoring/isqrt.legalize.c.html

Parameters

num	Calculate the square root of this number

Returns

The integer square root.

MyRand()

int MyRand

(

)

Syncron rand.

rand only used on this computer.

SetClipboard()

void SetClipboard

(

std::string &

str

)

square()

int square ( int  v )

inline

strcasestr()

char* strcasestr	(	const char *	a,
		const char *	b
	)

case insensitive strstr

Case insensitive version of strstr

Parameters

a	String to search in
b	Substring to search for

Returns

Pointer to first occurrence of b or NULL if not found.

strcat_s()

errno_t strcat_s	(	char *	dst,
		size_t	dstsize,
		const char *	src
	)

strcpy_s()

errno_t strcpy_s	(	char *	dst,
		size_t	dstsize,
		const char *	src
	)

strncpy_s()

errno_t strncpy_s	(	char *	dst,
		size_t	dstsize,
		const char *	src,
		size_t	count
	)

strnlen()

size_t strnlen	(	const char *	str,
		size_t	strsize
	)

determine length of a fixed-length string

supportsAVX()

bool supportsAVX

(

)

supportsSSE2()

bool supportsSSE2

(

)

SyncRand() [1/2]

int SyncRand

(

)

Initialize the syncron rand.

Synchronized random number.

Note

This random value must be same on all machines in network game. Very simple random generations, enough for us.

SyncRand() [2/2]

int SyncRand

(

int

max

)

Syncron rand.

Synchronized random number.

Parameters

max	Max value of random number to return

UTF8GetNext()

int UTF8GetNext	(	const std::string &	text,
		int	curpos
	)

UTF8GetPrev()

int UTF8GetPrev	(	const std::string &	text,
		int	curpos
	)

Variable Documentation

FileChecksums

uint32_t FileChecksums

Sync random seed value.

Sync random seed value.

optarg

char* optarg

opterr

int opterr

optind

int optind

optopt

int optopt

SyncRandSeed

unsigned SyncRandSeed