The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008, 2016 Edition
Copyright © 2001-2016 The IEEE and The Open Group

#### NAME

> wcstoimax, wcstoumax - convert a wide-character string to an integer type

#### SYNOPSIS

> ``#include <stddef.h>
> #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

> [CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2008 defers to the ISO C standard.

> These functions shall be equivalent to the wcstol(), wcstoll(), wcstoul(), and wcstoull() functions, respectively, except that the initial portion of the wide string shall be converted to intmax_t and uintmax_t representation, respectively.

#### RETURN VALUE

> These functions shall return the converted value, if any.

> If no conversion could be performed, zero shall be returned. If the correct value is outside the range of representable values, {INTMAX_MAX}, {INTMAX_MIN}, or {UINTMAX_MAX} shall be returned (according to the return type and sign of the value, if any), and errno shall be set to [ERANGE].

#### ERRORS

> These functions shall fail if:

> [EINVAL]
>   The value of base is not supported.
> [ERANGE]
>   The value to be returned is not representable.

> These functions may fail if:

> [EINVAL]
>   No conversion could be performed.

The following sections are informative.

#### EXAMPLES

> None.

#### APPLICATION USAGE

> None.

#### RATIONALE

> None.

#### FUTURE DIRECTIONS

> None.

#### SEE ALSO

> wcstol, wcstoul

> XBD <inttypes.h>, <stddef.h>

#### CHANGE HISTORY

> First released in Issue 6. Derived from the ISO/IEC 9899:1999 standard.

End of informative text.

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