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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
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STRTOIMAX(3P) POSIX Programmer's Manual STRTOIMAX(3P)
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.
strtoimax, strtoumax — convert string to integer type
#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);
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 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.
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].
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.
None.
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.
None.
None.
strtol(3p), strtoul(3p)
The Base Definitions volume of POSIX.1‐2017, inttypes.h(0p)
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 STRTOIMAX(3P)
Pages that refer to this page: inttypes.h(0p), strtoumax(3p)
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HTML rendering created 2023-12-22 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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