xtoa.cpp File Reference

#include <corecrt_internal.h>
#include <corecrt_internal_securecrt.h>
#include <limits.h>
#include <stdlib.h>

Include dependency graph for xtoa.cpp:

Go to the source code of this file.

Classes
struct	anonymous_namespace{xtoa.cpp}::make_signed< unsigned long >
struct	anonymous_namespace{xtoa.cpp}::make_signed< unsigned __int64 >

Namespaces
namespace	anonymous_namespace{xtoa.cpp}

Functions
template<typename UnsignedInteger , typename Character >
	_Success_ (return==0) static errno_t __cdecl common_xtox(UnsignedInteger const original_value
	_Out_writes_z_ (buffer_count) Character *const buffer
	_When_ (is_negative==true, _In_range_(>=, 2)) _In_range_(>
size_t const unsigned const bool const is_negative	throw ()
errno_t __cdecl	_itoa_s (int const value, char *const buffer, size_t const buffer_count, int const radix)
errno_t __cdecl	_ltoa_s (long const value, char *const buffer, size_t const buffer_count, int const radix)
errno_t __cdecl	_ultoa_s (unsigned long const value, char *const buffer, size_t const buffer_count, int const radix)
char *__cdecl	_itoa (int const value, char *const buffer, int const radix)
char *__cdecl	_ltoa (long const value, char *const buffer, int const radix)
char *__cdecl	_ultoa (unsigned long const value, char *const buffer, int const radix)
errno_t __cdecl	_i64toa_s (__int64 const value, char *const buffer, size_t const buffer_count, int const radix)
errno_t __cdecl	_ui64toa_s (unsigned __int64 const value, char *const buffer, size_t const buffer_count, int const radix)
char *__cdecl	_i64toa (__int64 const value, char *const buffer, int const radix)
char *__cdecl	_ui64toa (unsigned __int64 const value, char *const buffer, int const radix)
errno_t __cdecl	_itow_s (int const value, wchar_t *const buffer, size_t const buffer_count, int const radix)
errno_t __cdecl	_ltow_s (long const value, wchar_t *const buffer, size_t const buffer_count, int const radix)
errno_t __cdecl	_ultow_s (unsigned long const value, wchar_t *const buffer, size_t const buffer_count, int const radix)
wchar_t *__cdecl	_itow (int const value, wchar_t *const buffer, int const radix)
wchar_t *__cdecl	_ltow (long const value, wchar_t *const buffer, int const radix)
wchar_t *__cdecl	_ultow (unsigned long const value, wchar_t *const buffer, int const radix)
errno_t __cdecl	_i64tow_s (__int64 const value, wchar_t *const buffer, size_t const buffer_count, int const radix)
errno_t __cdecl	_ui64tow_s (unsigned __int64 const value, wchar_t *const buffer, size_t const buffer_count, int const radix)
wchar_t *__cdecl	_i64tow (__int64 const value, wchar_t *const buffer, int const radix)
wchar_t *__cdecl	_ui64tow (unsigned __int64 const value, wchar_t *const buffer, int const radix)

Variables
size_t const	buffer_count
size_t const unsigned const	radix

Function Documentation

_i64toa()

char *__cdecl _i64toa	(	__int64 const	value,
		char *const	buffer,
		int const	radix
	)

Definition at line 226 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    common_xtox(static_cast<unsigned __int64>(value), buffer, _CRT_UNBOUNDED_BUFFER_SIZE, radix, is_negative);
    return buffer;
}

_i64toa_s()

errno_t __cdecl _i64toa_s	(	__int64 const	value,
		char *const	buffer,
		size_t const	buffer_count,
		int const	radix
	)

Definition at line 203 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    return common_xtox_s(static_cast<unsigned __int64>(value), buffer, buffer_count, radix, is_negative);
}

_i64tow()

wchar_t *__cdecl _i64tow	(	__int64 const	value,
		wchar_t *const	buffer,
		int const	radix
	)

Definition at line 350 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    common_xtox(static_cast<unsigned __int64>(value), buffer, _CRT_UNBOUNDED_BUFFER_SIZE, radix, is_negative);
    return buffer;
}

_i64tow_s()

errno_t __cdecl _i64tow_s	(	__int64 const	value,
		wchar_t *const	buffer,
		size_t const	buffer_count,
		int const	radix
	)

Definition at line 327 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    return common_xtox_s(static_cast<unsigned __int64>(value), buffer, buffer_count, radix, is_negative);
}

_itoa()

char *__cdecl _itoa	(	int const	value,
		char *const	buffer,
		int const	radix
	)

Definition at line 164 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    common_xtox(static_cast<unsigned long>(value), buffer, _CRT_UNBOUNDED_BUFFER_SIZE, radix, is_negative);
    return buffer;
}

_itoa_s()

errno_t __cdecl _itoa_s	(	int const	value,
		char *const	buffer,
		size_t const	buffer_count,
		int const	radix
	)

Definition at line 130 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    return common_xtox_s(static_cast<unsigned long>(value), buffer, buffer_count, radix, is_negative);
}

_itow()

wchar_t *__cdecl _itow	(	int const	value,
		wchar_t *const	buffer,
		int const	radix
	)

Definition at line 288 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    common_xtox(static_cast<unsigned long>(value), buffer, _CRT_UNBOUNDED_BUFFER_SIZE, radix, is_negative);
    return buffer;
}

_itow_s()

errno_t __cdecl _itow_s	(	int const	value,
		wchar_t *const	buffer,
		size_t const	buffer_count,
		int const	radix
	)

Definition at line 254 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    return common_xtox_s(static_cast<unsigned long>(value), buffer, buffer_count, radix, is_negative);
}

_ltoa()

char *__cdecl _ltoa	(	long const	value,
		char *const	buffer,
		int const	radix
	)

Definition at line 175 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    common_xtox(static_cast<unsigned long>(value), buffer, _CRT_UNBOUNDED_BUFFER_SIZE, radix, is_negative);
    return buffer;
}

_ltoa_s()

errno_t __cdecl _ltoa_s	(	long const	value,
		char *const	buffer,
		size_t const	buffer_count,
		int const	radix
	)

Definition at line 141 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    return common_xtox_s(static_cast<unsigned long>(value), buffer, buffer_count, radix, is_negative);
}

_ltow()

wchar_t *__cdecl _ltow	(	long const	value,
		wchar_t *const	buffer,
		int const	radix
	)

Definition at line 299 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    common_xtox(static_cast<unsigned long>(value), buffer, _CRT_UNBOUNDED_BUFFER_SIZE, radix, is_negative);
    return buffer;
}

_ltow_s()

errno_t __cdecl _ltow_s	(	long const	value,
		wchar_t *const	buffer,
		size_t const	buffer_count,
		int const	radix
	)

Definition at line 265 of file xtoa.cpp.

{
    bool const is_negative = radix == 10 && value < 0;
    return common_xtox_s(static_cast<unsigned long>(value), buffer, buffer_count, radix, is_negative);
}

_Out_writes_z_()

_Out_writes_z_

(

buffer_count

)

const

_Success_()

template<typename UnsignedInteger , typename Character >

_Success_

(

return

= = 0

)

const

_ui64toa()

char *__cdecl _ui64toa	(	unsigned __int64 const	value,
		char *const	buffer,
		int const	radix
	)

Definition at line 237 of file xtoa.cpp.

{
    common_xtox(value, buffer, _CRT_UNBOUNDED_BUFFER_SIZE, radix, false);
    return buffer;
}

_ui64toa_s()

errno_t __cdecl _ui64toa_s	(	unsigned __int64 const	value,
		char *const	buffer,
		size_t const	buffer_count,
		int const	radix
	)

Definition at line 214 of file xtoa.cpp.

{
    return common_xtox_s(value, buffer, buffer_count, radix, false);
}

_ui64tow()

wchar_t *__cdecl _ui64tow	(	unsigned __int64 const	value,
		wchar_t *const	buffer,
		int const	radix
	)

Definition at line 361 of file xtoa.cpp.

{
    common_xtox(value, buffer, _CRT_UNBOUNDED_BUFFER_SIZE, radix, false);
    return buffer;
}

_ui64tow_s()

errno_t __cdecl _ui64tow_s	(	unsigned __int64 const	value,
		wchar_t *const	buffer,
		size_t const	buffer_count,
		int const	radix
	)

Definition at line 338 of file xtoa.cpp.

{
    return common_xtox_s(value, buffer, buffer_count, radix, false);
}

_ultoa()

char *__cdecl _ultoa	(	unsigned long const	value,
		char *const	buffer,
		int const	radix
	)

Definition at line 186 of file xtoa.cpp.

{
    common_xtox(value, buffer, _CRT_UNBOUNDED_BUFFER_SIZE, radix, false);
    return buffer;
}

_ultoa_s()

errno_t __cdecl _ultoa_s	(	unsigned long const	value,
		char *const	buffer,
		size_t const	buffer_count,
		int const	radix
	)

Definition at line 152 of file xtoa.cpp.

{
    return common_xtox_s(value, buffer, buffer_count, radix, false);
}

_ultow()

wchar_t *__cdecl _ultow	(	unsigned long const	value,
		wchar_t *const	buffer,
		int const	radix
	)

Definition at line 310 of file xtoa.cpp.

{
    common_xtox(value, buffer, _CRT_UNBOUNDED_BUFFER_SIZE, radix, false);
    return buffer;
}

_ultow_s()

errno_t __cdecl _ultow_s	(	unsigned long const	value,
		wchar_t *const	buffer,
		size_t const	buffer_count,
		int const	radix
	)

Definition at line 276 of file xtoa.cpp.

{
    return common_xtox_s(value, buffer, buffer_count, radix, false);
}

_When_()

_When_	(	is_negative	= = true,
		_In_range_(>=, 2)
	)

throw()

size_t const unsigned const bool const is_negative throw

(

)

Definition at line 39 of file xtoa.cpp.

{
// OACR isn't able to track that p stays within the bounds of [buffer, buffer + buffer_count) so manually verified and disabled warning
#pragma warning(push)
#pragma warning(disable:26014)
    Character* p      = buffer; // pointer to traverse the string
    size_t     length = 0;      // current length of string
 
    UnsignedInteger remaining_value = original_value;;
 
    if (is_negative)
    {
        *p++ = '-';
        ++length;
 
        remaining_value = static_cast<UnsignedInteger>(
            -static_cast<typename make_signed<UnsignedInteger>::type>(remaining_value)
        );
    }
 
    Character* first_digit = p;
 
    do
    {
        unsigned const digit = static_cast<unsigned>(remaining_value % radix);
        remaining_value /= radix;
 
        // Convert to ASCII and store:
        if (digit > 9)
        {
            *p++ = static_cast<Character>(digit - 10 + 'a');
        }
        else
        {
            *p++ = static_cast<Character>(digit + '0');
        }
 
        ++length;
    }
    while (remaining_value > 0 && length < buffer_count);
 
    if (length >= buffer_count)
    {
        buffer[0] = '\0';
        _VALIDATE_RETURN_ERRCODE(length < buffer_count, ERANGE);
    }
 
    // We now have the digits of the number in the buffer, but in reverse order.
    // Reverse the order, but first terminate the string:
    *p-- = '\0';
 
    do
    {
        Character const t = *p;
        *p = *first_digit;
        *first_digit = t;
        --p;
        ++first_digit;
    }
    while (first_digit < p);
 
    return 0;
#pragma warning(pop)
}

Variable Documentation

buffer_count

size_t const buffer_count

Initial value:

{
    int const int_count = static_cast<int>(buffer_count)

Definition at line 36 of file xtoa.cpp.

Referenced by __acrt_fp_strflt_to_string(), __acrt_GetDateFormatEx(), __acrt_GetTimeFormatEx(), __acrt_RtlGenRandom(), __stdio_common_vsscanf(), __stdio_common_vswscanf(), __wcserror_s(), _ecvt_s(), _ecvt_s_internal(), _fcvt_s(), _fcvt_s_internal(), _gcvt_s(), _gcvt_s_internal(), _i64toa_s(), _i64tow_s(), _isctype_l(), _itoa_s(), _itow_s(), _ltoa_s(), _ltow_s(), _strerror_s(), _Success_(), _ui64toa_s(), _ui64tow_s(), _ultoa_s(), _ultow_s(), append_message(), common_splitpath(), common_strerror_s(), common_vsscanf(), create_environment_string(), __crt_stdio_input::input_processor< Character, InputAdapter >::fill_buffer(), internal_to_string(), __crt_stdio_input::input_processor< Character, InputAdapter >::process_string_specifier_tchar(), __crt_stdio_input::input_processor< Character, InputAdapter >::reset_buffer(), set_variable_in_other_environment(), shift_bytes(), throw(), wined3d_swapchain_resize_buffers(), and __crt_stdio_input::input_processor< Character, InputAdapter >::write_character().

radix

size_t const unsigned const radix

Definition at line 37 of file xtoa.cpp.

Referenced by _i64toa(), _i64toa_s(), _i64tow(), _i64tow_s(), _itoa(), _itoa_s(), _itow(), _itow_s(), _ltoa(), _ltoa_s(), _ltow(), _ltow_s(), _ui64toa(), _ui64toa_s(), _ui64tow(), _ui64tow_s(), _ultoa(), _ultoa_s(), _ultow(), _ultow_s(), ata_bblk(), debugcontrol_GetRadix(), debugcontrol_SetRadix(), DECLARE_INTERFACE_(), JSGlobal_parseInt(), Number_toString(), throw(), and UDFGetCfgParameter().