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wcstoimax.3c (2010 09)

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wcstoimax(3C) wcstoimax(3C)
NAME
wcstoimax( ), wcstoumax( ) - convert wide character string to long integer
SYNOPSIS
#include <inttypes.h>
intmax_t wcstoimax(const wchar_t *__restrict nptr, wchar_t **__restrict
endptr, int base);
uintmax_t wcstoumax(const wchar_t *__restrict nptr, wchar_t **__restrict
endptr, int base);
DESCRIPTION
wcstoimax() or wcstoumax() converts the wide character string pointed to by nptr to
intmax_t or
uintmax_t representation, respectively. The wide character string is scanned up to the first wide char-
acter inconsistent with the base. Leading ‘‘white-space’’ wide characters (as defined by
iswspace() in
wctype (3C)) are ignored. If no conversion can take place, zero is returned.
If base is greater than or equal to 2 and less than or equal to 36, it is used as the base for conversion.
After an optional leading sign, leading zeros are ignored, and
0x or 0X is ignored if base is 16.
If base is zero, the wide character string itself determines the base as follows: after an optional leading
sign, a leading zero indicates octal conversion; a leading
0x or 0X indicates hexadecimal conversion.
Otherwise, decimal conversion is used.
If the value of endptr is not
(wchar_t **)NULL, a pointer to the wide character terminating the scan
is returned in the location pointed to by endptr . If no integer can be formed, the location pointed to by
endptr is set to nptr , and zero is returned.
Definitions for these functions and the type
wchar_t are provided in the <wchar.h> header file.
EXTERNAL INFLUENCES
Locale
The
LC_CTYPE category determines how wide character codes are interpreted.
International Code Set Support
Single- and multi-byte character code sets are supported.
RETURN VALUE
Upon successful completion, both functions return the converted value, if any.
If the correct value would cause overflow:
wcstoimax() returns INTMAX_MAX or INTMAX_MIN (according to the sign of the value), and
sets errno to [ERANGE],
wcstoumax() returns UINTMAX_MAX and sets errno to [ERANGE].
For all other errors, zero is returned and
errno is set to indicate the error.
ERRORS
wcstoimax() and wcstoumax() fail and errno is set, if any of the following conditions are encoun-
tered:
[EINVAL] The value of base is not supported.
[ERANGE] The value to be returned would have caused overflow.
AUTHOR
wcstoimax() and wcstoumax() were developed by HP.
SEE ALSO
wctype(3C), wcstod(3C), wcstol(3C), scanf(3S), thread_safety(5).
STANDARDS CONFORMANCE
wcstoimax(): C99
wcstoumax(): C99
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1

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