This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface

       None.

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard
       for Information  Technology  --  Portable  Operating  System  Interface  (POSIX),  The  Open  Group  Base
       Specifications  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics
       Engineers, Inc and The Open Group.  In the event of any discrepancy between this version and the original
       IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee  document.
       The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

       Any  typographical  or formatting errors that appear in this page are most likely to have been introduced
       during  the  conversion  of  the  source  files  to  man  page  format.  To  report  such   errors,   see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                                   2017                                     WCSTOIMAX(3POSIX)

       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.1‐2017 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.

       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.

       Thefollowingsectionsareinformative.

       None.

       None.

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

       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult the corresponding Linux manual page for details of Linux behavior), or the  interface
       may not be implemented on Linux.

       None.

       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].

wcstol(), wcstoul()

       The Base Definitions volume of POSIX.1‐2017, <inttypes.h>, <stddef.h>

       #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);