bch15_5.c File Reference

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Functions
static int	bch15_5_calc_epos (unsigned _epos[3], unsigned _s[3])
static int	bch15_5_calc_omega (unsigned _o[3], unsigned _s[3])
static int	bch15_5_calc_syndrome (unsigned _s[3], unsigned _y)
int	bch15_5_correct (unsigned *_y)
unsigned	bch15_5_encode (unsigned _x)
static unsigned	gf16_div (unsigned _a, unsigned _b)
static unsigned	gf16_hmul (unsigned _a, unsigned _logb)
static unsigned	gf16_mul (unsigned _a, unsigned _b)

Variables
static const unsigned char	gf16_exp [31]
static const signed char	gf16_log [16]

Function Documentation

static int bch15_5_calc_epos ( unsigned  _epos[3], unsigned  _s[3]  )

static

References bch15_5_calc_omega(), gf16_exp, gf16_hmul(), and gf16_log.

Referenced by bch15_5_correct().

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static int bch15_5_calc_omega ( unsigned  _o[3], unsigned  _s[3]  )

static

References gf16_div(), and gf16_mul().

Referenced by bch15_5_calc_epos().

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static int bch15_5_calc_syndrome ( unsigned  _s[3], unsigned  _y  )

static

References gf16_exp.

Referenced by bch15_5_correct().

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int bch15_5_correct

(

unsigned *

_y

)

References bch15_5_calc_epos(), bch15_5_calc_syndrome(), bch15_5_encode(), and y.

Referenced by bch15_5_encode(), and qr_finder_fmt_info_decode().

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unsigned bch15_5_encode

(

unsigned

_x

)

References bch15_5_correct(), bch15_5_encode(), main(), and y.

Referenced by bch15_5_correct(), and bch15_5_encode().

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static unsigned gf16_div ( unsigned  _a, unsigned  _b  )

static

References gf16_exp, and gf16_log.

Referenced by bch15_5_calc_omega().

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static unsigned gf16_hmul ( unsigned  _a, unsigned  _logb  )

static

References gf16_exp, and gf16_log.

Referenced by bch15_5_calc_epos().

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static unsigned gf16_mul ( unsigned  _a, unsigned  _b  )

static

References gf16_exp, and gf16_log.

Referenced by bch15_5_calc_omega().

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Variable Documentation

const unsigned char gf16_exp[31]

static

Referenced by bch15_5_calc_epos(), bch15_5_calc_syndrome(), gf16_div(), gf16_hmul(), and gf16_mul().

const signed char gf16_log[16]

static

Referenced by bch15_5_calc_epos(), gf16_div(), gf16_hmul(), and gf16_mul().