strtoimax(3p) — Linux manual page


STRTOIMAX(3P)             POSIX Programmer's Manual            STRTOIMAX(3P)

PROLOG         top

       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.

NAME         top

       strtoimax, strtoumax — convert string to integer type

SYNOPSIS         top

       #include <inttypes.h>

       intmax_t strtoimax(const char *restrict nptr, char **restrict endptr,
           int base);
       uintmax_t strtoumax(const char *restrict nptr, char **restrict endptr,
           int base);

DESCRIPTION         top

       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 strtol(), strtoll(),
       strtoul(), and strtoull() functions, except that the initial portion
       of the string shall be converted to intmax_t and uintmax_t
       representation, respectively.

RETURN VALUE         top

       These functions shall return the converted value, if any.

       If no conversion could be performed, zero shall be returned and errno
       may be set to [EINVAL].

       If the value of base is not supported, 0 shall be returned and errno
       shall be set to [EINVAL].

       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         top

       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         top



       Since the value of *endptr is unspecified if the value of base is not
       supported, applications should either ensure that base has a
       supported value (0 or between 2 and 36) before the call, or check for
       an [EINVAL] error before examining *endptr.

RATIONALE         top




SEE ALSO         top

       strtol(3p), strtoul(3p)

       The Base Definitions volume of POSIX.1‐2008, inttypes.h(0p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) 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 .

       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 .

IEEE/The Open Group                 2013                       STRTOIMAX(3P)

Pages that refer to this page: inttypes.h(0p)strtoumax(3p)