1STRTOIMAX(3P)              POSIX Programmer's Manual             STRTOIMAX(3P)
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PROLOG

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

13       strtoimax, strtoumax — convert string to integer type
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SYNOPSIS

16       #include <inttypes.h>
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18       intmax_t strtoimax(const char *restrict nptr, char **restrict endptr,
19           int base);
20       uintmax_t strtoumax(const char *restrict nptr, char **restrict endptr,
21           int base);
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DESCRIPTION

24       The functionality described on this reference page is aligned with  the
25       ISO C  standard.  Any  conflict between the requirements described here
26       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2008
27       defers to the ISO C standard.
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29       These  functions  shall  be equivalent to the strtol(), strtoll(), str‐
30       toul(), and strtoull() functions, except that the  initial  portion  of
31       the string shall be converted to intmax_t and uintmax_t representation,
32       respectively.
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RETURN VALUE

35       These functions shall return the converted value, if any.
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37       If no conversion could be performed, zero shall be returned  and  errno
38       may be set to [EINVAL].
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40       If  the  value  of base is not supported, 0 shall be returned and errno
41       shall be set to [EINVAL].
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43       If the correct value is outside  the  range  of  representable  values,
44       {INTMAX_MAX}, {INTMAX_MIN}, or {UINTMAX_MAX} shall be returned (accord‐
45       ing to the return type and sign of the value, if any), and errno  shall
46       be set to [ERANGE].
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ERRORS

49       These functions shall fail if:
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51       EINVAL The value of base is not supported.
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53       ERANGE The value to be returned is not representable.
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55       These functions may fail if:
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57       EINVAL No conversion could be performed.
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59       The following sections are informative.
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EXAMPLES

62       None.
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APPLICATION USAGE

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

71       None.
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FUTURE DIRECTIONS

74       None.
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SEE ALSO

77       strtol(), strtoul()
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79       The Base Definitions volume of POSIX.1‐2008, <inttypes.h>
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82       Portions of this text are reprinted and reproduced in  electronic  form
83       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
84       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
85       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
86       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
87       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
88       event of any discrepancy between this version and the original IEEE and
89       The  Open Group Standard, the original IEEE and The Open Group Standard
90       is the referee document. The original Standard can be  obtained  online
91       at http://www.unix.org/online.html .
92
93       Any  typographical  or  formatting  errors that appear in this page are
94       most likely to have been introduced during the conversion of the source
95       files  to  man page format. To report such errors, see https://www.ker‐
96       nel.org/doc/man-pages/reporting_bugs.html .
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100IEEE/The Open Group                  2013                        STRTOIMAX(3P)
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