util functions and macros More...

#include <types.h>

Macros
#define	___UTILS_H 0

#define	ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

#define	MIN(x, y) (x < y ? x : y)

#define	MAX(x, y) (x > y ? x : y)

#define	ABS(x) (x >= 0?x:-1 * x)

#define	sizeof_field(s, m) (sizeof((((s*)0)->m)))

#define	typeof_field(s, m) (typeof(((s*)0)->m))

#define	offsetof_field(s, m) ( ((uint64_t)&((s*)0)->m) )

#define	itoa_with_buffer(buf, number) ito_base_with_buffer(buf, number, 10)

#define	utoa_with_buffer(buf, number) uto_base_with_buffer(buf, number, 10)

#define	utoh_with_buffer(buf, number) uto_base_with_buffer(buf, number, 16)

#define	ftoa_with_buffer(buf, number) fto_base_with_buffer(buf, number, 6, 10)

#define	ftoh_with_buffer(buf, number) fto_base_with_buffer(buf, number, 6, 16)

#define	ftoa_with_buffer_and_prec(buf, number, prec) fto_base_with_buffer(buf, number, prec, 10)

#define	ftoh_with_buffer_and_prec(buf, number, prec) fto_base_with_buffer(buf, number, prec, 16)

#define	BYTE_SWAP16(n) byte_swap(n, 2)

#define	BYTE_SWAP32(n) byte_swap(n, 4)

#define	BYTE_SWAP64(n) byte_swap(n, 8)

#define	DIGIT_TO_HEX(r) (((r) < 10)?(r) + 48:(r) + 55)

#define	ROTLEFT(a, b, c) (((a) << (b)) \| ((a) >> (c - (b))))

#define	ROTRIGHT(a, b, c) (((a) >> (b)) \| ((a) << (c - (b))))

#define	ROTLEFT8(a, b) ROTLEFT(a, b, 8)

#define	ROTRIGHT8(a, b) ROTRIGHT(a, b, 8)

#define	ROTLEFT16(a, b) ROTLEFT(a, b, 16)

#define	ROTRIGHT16(a, b) ROTRIGHT(a, b, 16)

#define	ROTLEFT32(a, b) ROTLEFT(a, b, 32)

#define	ROTRIGHT32(a, b) ROTRIGHT(a, b, 32)

#define	ROTLEFT64(a, b) ROTLEFT((uint64_t)a, (uint64_t)b, 64ULL)

#define	ROTRIGHT64(a, b) ROTRIGHT((uint64_t)a, (uint64_t)b, 64ULL)

Functions
number_t	power (number_t base, number_t p)
	power base with p More...

int8_t	ito_base_with_buffer (char_t *buffer, number_t number, number_t base)
	converts integer to string More...

int8_t	uto_base_with_buffer (char_t *buffer, unumber_t number, number_t base)
	converts unsigned integer to string More...

int8_t	fto_base_with_buffer (char_t *buffer, float64_t number, number_t prec, number_t base)
	converts float to string More...

static uint64_t	byte_swap (uint64_t num, uint8_t bc)

uint8_t	byte_count (const uint64_t num)

static boolean_t	bit_test32 (uint32_t *data, uint8_t bitloc)
	test bit value of given data at bitloc More...

static boolean_t	bit_clear32 (volatile uint32_t *data, uint8_t bitloc)
	clears bit value of given data at bitloc More...

static boolean_t	bit_set32 (volatile uint32_t *data, uint8_t bitloc)
	sets bit value of given data at bitloc More...

static boolean_t	bit_test (uint64_t *data, uint8_t bitloc)
	test bit value of given data at bitloc More...

static boolean_t	bit_clear (uint64_t *data, uint8_t bitloc)
	clears bit value of given data at bitloc More...

static boolean_t	bit_set (uint64_t *data, uint8_t bitloc)
	sets bit value of given data at bitloc More...

static boolean_t	bit_change (uint64_t *data, uint8_t bitloc)
	changes bit value of given data at bitloc More...

static uint64_t	bit_most_significant (uint64_t num)
	gets most significant bit location More...

uint64_t	read_memio (uint64_t va, uint8_t size)

void	write_memio (uint64_t va, uint64_t val, uint8_t size)

static uint64_t	reverse_bits (uint64_t bits, uint8_t bit_count)

boolean_t	isalpha (char_t c)

boolean_t	isdigit (char_t c)

boolean_t	isalnum (char_t c)

boolean_t	isxdigit (char_t c)

boolean_t	islower (char_t c)

boolean_t	isupper (char_t c)

boolean_t	isspace (char_t c)

boolean_t	ispunct (char_t c)

boolean_t	isprint (char_t c)

boolean_t	isgraph (char_t c)

boolean_t	iscntrl (char_t c)

boolean_t	isblank (char_t c)

boolean_t	isascii (char_t c)

boolean_t	isalnumw (char_t c)

const char_t *	randstr (uint32_t len)

Detailed Description

util functions and macros

This work is licensed under TURNSTONE OS Public License. Please read and understand latest version of Licence.

Macro Definition Documentation

◆ ___UTILS_H

#define ___UTILS_H 0

prevent duplicate header error macro

◆ MAX

#define MAX	(	x,
		y
	)	(x > y ? x : y)

find max of two numbers

Parameters

[in]	x	first number
[in]	y	first number

Returns: maximum of x or y

◆ MIN

#define MIN	(	x,
		y
	)	(x < y ? x : y)

find min of two numbers

Parameters

[in]	x	first number
[in]	y	first number

Returns: minimum of x or y

Function Documentation

◆ bit_change()

static boolean_t bit_change	(	uint64_t *	data,
		uint8_t	bitloc
	)

inlinestatic

changes bit value of given data at bitloc

Parameters

[in]	data	bit array
[in]	bitloc	bit location at data

Returns: old value

◆ bit_clear()

static boolean_t bit_clear	(	uint64_t *	data,
		uint8_t	bitloc
	)

inlinestatic

clears bit value of given data at bitloc

Parameters

[in]	data	bit array
[in]	bitloc	bit location at data

Returns: old value

◆ bit_clear32()

static boolean_t bit_clear32	(	volatile uint32_t *	data,
		uint8_t	bitloc
	)

inlinestatic

clears bit value of given data at bitloc

Parameters

[in]	data	bit array
[in]	bitloc	bit location at data

Returns: old value

◆ bit_most_significant()

static uint64_t bit_most_significant ( uint64_t num )

inlinestatic

gets most significant bit location

Parameters

[in] num number to get

Returns: bit location

◆ bit_set()

static boolean_t bit_set	(	uint64_t *	data,
		uint8_t	bitloc
	)

inlinestatic

sets bit value of given data at bitloc

Parameters

[in]	data	bit array
[in]	bitloc	bit location at data

Returns: old value

◆ bit_set32()

static boolean_t bit_set32	(	volatile uint32_t *	data,
		uint8_t	bitloc
	)

inlinestatic

sets bit value of given data at bitloc

Parameters

[in]	data	bit array
[in]	bitloc	bit location at data

Returns: old value

◆ bit_test()

static boolean_t bit_test	(	uint64_t *	data,
		uint8_t	bitloc
	)

inlinestatic

test bit value of given data at bitloc

Parameters

[in]	data	bit array
[in]	bitloc	bit location at data

Returns: bit value

◆ bit_test32()

static boolean_t bit_test32	(	uint32_t *	data,
		uint8_t	bitloc
	)

inlinestatic

test bit value of given data at bitloc

Parameters

[in]	data	bit array
[in]	bitloc	bit location at data

Returns: bit value

◆ fto_base_with_buffer()

int8_t fto_base_with_buffer	(	char_t *	buffer,
		float64_t	number,
		number_t	prec,
		number_t	base
	)

converts float to string

Parameters

[in]	buffer	destination buffer
[in]	number	to convert
[in]	base	to convert

Returns: 0 if successed

buffer should be enough to take data. it's malloc free

◆ ito_base_with_buffer()

int8_t ito_base_with_buffer	(	char_t *	buffer,
		number_t	number,
		number_t	base
	)

converts integer to string

Parameters

[in]	buffer	destination buffer
[in]	number	to convert
[in]	base	to convert

Returns: 0 if successed

buffer should be enough to take data. it's malloc free

◆ power()

number_t power	(	number_t	base,
		number_t	p
	)

power base with p

Parameters

[in]	base	the base
[in]	p	the power

Returns: base^p with fast power algorithm

◆ uto_base_with_buffer()

int8_t uto_base_with_buffer	(	char_t *	buffer,
		unumber_t	number,
		number_t	base
	)

converts unsigned integer to string

Parameters

[in]	buffer	destination buffer
[in]	number	unsigned number to convert
[in]	base	to convert

Returns: 0 if successed

buffer should be enough to take data. it's malloc free

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ ___UTILS_H

◆ MAX

◆ MIN

Function Documentation

◆ bit_change()

◆ bit_clear()

◆ bit_clear32()

◆ bit_most_significant()

◆ bit_set()

◆ bit_set32()

◆ bit_test()

◆ bit_test32()

◆ fto_base_with_buffer()

◆ ito_base_with_buffer()

◆ power()

◆ uto_base_with_buffer()