Conversion Functions

String/number conversion utilities. More...

Functions
int	ft_atoi (const char *str)
	Converts a string to an integer.
long	ft_atol (const char *str)
	Converts a string to a long integer.
pid_t	ft_atopid (const char *str)
	Converts a string to a pid_t.
size_t	ft_atozu (const char *str)
	Converts a string to a size_t.
char *	ft_itoa (int n)
	Converts an integer to a string.
char *	ft_utoa (unsigned int n)
	Converts an unsigned integer to a string.
char *	ft_zutoa (size_t n)
	Converts a size_t to a string.
char *	ft_ltoa (long n)
	Converts a long integer to a string.
char *	ft_pidtoa (pid_t n)
	Converts a pid_t to a string.
char *	ft_ultoa_base (unsigned long n, const char *base)
	Converts an unsigned long to a string in a given base.
bool	parse_int (char *s, int *out)
	Parses a string to an integer with overflow detection.
bool	parse_long (char *s, long *out)
	Parses a string to a long with overflow detection.

Detailed Description

String/number conversion utilities.

Functions to convert between strings and numeric types.

Function Documentation

ft_atoi()

int ft_atoi

(

const char *

str

)

Converts a string to an integer.

Parameters

str	String to convert.

Returns

The converted integer value.

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ft_atol()

long ft_atol

(

const char *

str

)

Converts a string to a long integer.

Parameters

str	String to convert.

Returns

The converted long value.

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ft_atopid()

pid_t ft_atopid

(

const char *

str

)

Converts a string to a pid_t.

Parameters

str	String to convert.

Returns

The converted pid_t value.

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ft_atozu()

size_t ft_atozu

(

const char *

str

)

Converts a string to a size_t.

Note

Skips leading whitespace and accepts an optional leading '+'.

Warning

Returns SIZE_MAX on overflow.

Parameters

str	String to convert.

Returns

The converted size_t value.

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ft_itoa()

char * ft_itoa

(

int

n

)

Converts an integer to a string.

Note

Caller owns the returned string and must free it.

Parameters

n	Integer to convert.

Returns

Newly allocated string (owned), or NULL on failure.

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ft_ltoa()

char * ft_ltoa

(

long

n

)

Converts a long integer to a string.

Note

Caller owns the returned string and must free it.

Parameters

n	Long integer to convert.

Returns

Newly allocated string (owned), or NULL on failure.

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ft_pidtoa()

char * ft_pidtoa

(

pid_t

n

)

Converts a pid_t to a string.

Note

Caller owns the returned string and must free it.

Parameters

n	pid_t value to convert.

Returns

Newly allocated string (owned), or NULL on failure.

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ft_ultoa_base()

char * ft_ultoa_base	(	unsigned long	n,
		const char *	base
	)

Converts an unsigned long to a string in a given base.

Note

Caller owns the returned string and must free it.

Parameters

n	Number to convert.
base	String representing the base characters (borrowed, >= 2 chars).

Returns

Newly allocated string (owned), or NULL on failure.

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ft_utoa()

char * ft_utoa

(

unsigned int

n

)

Converts an unsigned integer to a string.

Note

Caller owns the returned string and must free it.

Parameters

n	Unsigned integer to convert.

Returns

Newly allocated string (owned), or NULL on failure.

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ft_zutoa()

char * ft_zutoa

(

size_t

n

)

Converts a size_t to a string.

Note

Caller owns the returned string and must free it.

Parameters

n	Value to convert.

Returns

Newly allocated string (owned), or NULL on failure.

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parse_int()

bool parse_int	(	char *	s,
		int *	out
	)

Parses a string to an integer with overflow detection.

Accepts an optional leading '+' or '-' sign followed by digits. Returns false if the string is empty, contains non-digit characters, or the value would overflow an int.

Parameters

s	String to parse (borrowed).
out	Pointer to store the parsed integer (modified on success).

Returns

true on success, false if parsing failed or value out of range.

parse_long()

bool parse_long	(	char *	s,
		long *	out
	)

Parses a string to a long with overflow detection.

Accepts an optional leading '+' or '-' sign followed by digits. Returns false if the string is empty, contains non-digit characters, or the value would overflow a long.

Parameters

s	String to parse (borrowed).
out	Pointer to store the parsed long (modified on success).

Returns

true on success, false if parsing failed or value out of range.