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diff --git a/man-pages-posix-2013/man0p/inttypes.h.0p b/man-pages-posix-2013/man0p/inttypes.h.0p new file mode 100644 index 0000000..4c8ab75 --- /dev/null +++ b/man-pages-posix-2013/man0p/inttypes.h.0p @@ -0,0 +1,242 @@ +'\" et +.TH inttypes.h "0P" 2013 "IEEE/The Open Group" "POSIX Programmer's Manual" +.SH PROLOG +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. + +.SH NAME +inttypes.h +\(em fixed size integer types +.SH SYNOPSIS +.LP +.nf +#include <inttypes.h> +.fi +.SH DESCRIPTION +Some of the functionality described on this reference page extends the +ISO\ C standard. Applications shall define the appropriate feature test macro +(see the System Interfaces volume of POSIX.1\(hy2008, +.IR "Section 2.2" ", " "The Compilation Environment") +to enable the visibility of these symbols in this header. +.P +The +.IR <inttypes.h> +header shall include the +.IR <stdint.h> +header. +.P +The +.IR <inttypes.h> +header shall define at least the following types: +.IP "\fBimaxdiv_t\fR" 12 +Structure type that is the type of the value returned by the +\fIimaxdiv\fR() +function. +.IP "\fBwchar_t\fR" 12 +As described in +.IR <stddef.h> . +.P +The +.IR <inttypes.h> +header shall define the following macros. Each expands to a +character string literal containing a conversion specifier, possibly +modified by a length modifier, suitable for use within the +.IR format +argument of a formatted input/output function when converting the +corresponding integer type. These macros have the general form of +PRI (character string literals for the +\fIfprintf\fR() +and +\fIfwprintf\fR() +family of functions) or SCN (character string literals for the +\fIfscanf\fR() +and +\fIfwscanf\fR() +family of functions), followed by the conversion specifier, followed by +a name corresponding to a similar type name in +.IR <stdint.h> . +In these names, +.IR N +represents the width of the type as described in +.IR <stdint.h> . +For example, +.IR PRIdFAST32 +can be used in a format string to print the value of an integer of type +.BR int_fast32_t . +.P +The +\fIfprintf\fR() +macros for signed integers are: +.sp +.RS +.TS +tab(!); +le le le le le. +PRId\fIN\fR!PRIdLEAST\fIN\fR!PRIdFAST\fIN\fR!PRIdMAX!PRIdPTR +PRIi\fIN\fR!PRIiLEAST\fIN\fR!PRIiFAST\fIN\fR!PRIiMAX!PRIiPTR +.TE +.RE +.P +The +\fIfprintf\fR() +macros for unsigned integers are: +.sp +.RS +.TS +tab(!); +le le le le le. +PRIo\fIN\fR!PRIoLEAST\fIN\fR!PRIoFAST\fIN\fR!PRIoMAX!PRIoPTR +PRIu\fIN\fR!PRIuLEAST\fIN\fR!PRIuFAST\fIN\fR!PRIuMAX!PRIuPTR +PRIx\fIN\fR!PRIxLEAST\fIN\fR!PRIxFAST\fIN\fR!PRIxMAX!PRIxPTR +PRIX\fIN\fR!PRIXLEAST\fIN\fR!PRIXFAST\fIN\fR!PRIXMAX!PRIXPTR +.TE +.RE +.P +The +\fIfscanf\fR() +macros for signed integers are: +.sp +.RS +.TS +tab(!); +le le le le le. +SCNd\fIN\fR!SCNdLEAST\fIN\fR!SCNdFAST\fIN\fR!SCNdMAX!SCNdPTR +SCNi\fIN\fR!SCNiLEAST\fIN\fR!SCNiFAST\fIN\fR!SCNiMAX!SCNiPTR +.TE +.RE +.P +The +\fIfscanf\fR() +macros for unsigned integers are: +.sp +.RS +.TS +tab(!); +le le le le le. +SCNo\fIN\fR!SCNoLEAST\fIN\fR!SCNoFAST\fIN\fR!SCNoMAX!SCNoPTR +SCNu\fIN\fR!SCNuLEAST\fIN\fR!SCNuFAST\fIN\fR!SCNuMAX!SCNuPTR +SCNx\fIN\fR!SCNxLEAST\fIN\fR!SCNxFAST\fIN\fR!SCNxMAX!SCNxPTR +.TE +.RE +.P +For each type that the implementation provides in +.IR <stdint.h> , +the corresponding +\fIfprintf\fR() +and +\fIfwprintf\fR() +macros shall be defined and the corresponding +\fIfscanf\fR() +and +\fIfwscanf\fR() +macros shall be defined unless the implementation does not have a +suitable modifier for the type. +.P +The following shall be declared as functions and may also be defined as +macros. Function prototypes shall be provided. +.sp +.RS 4 +.nf +\fB +intmax_t imaxabs(intmax_t); +imaxdiv_t imaxdiv(intmax_t, intmax_t); +intmax_t strtoimax(const char *restrict, char **restrict, int); +uintmax_t strtoumax(const char *restrict, char **restrict, int); +intmax_t wcstoimax(const wchar_t *restrict, wchar_t **restrict, int); +uintmax_t wcstoumax(const wchar_t *restrict, wchar_t **restrict, int); +.fi \fR +.P +.RE +.LP +.IR "The following sections are informative." +.SH "EXAMPLES" +.LP +.nf +#include <inttypes.h> +#include <wchar.h> +int main(void) +{ + uintmax_t i = UINTMAX_MAX; // This type always exists. + wprintf(L"The largest integer value is %020" + PRIxMAX "\en", i); + return 0; +} +.fi +.SH "APPLICATION USAGE" +The purpose of +.IR <inttypes.h> +is to provide a set of integer types whose definitions are consistent +across machines and independent of operating systems and other +implementation idiosyncrasies. It defines, through +.BR typedef , +integer types of various sizes. Implementations are free to +.BR typedef +them as ISO\ C standard integer types or extensions that they support. Consistent +use of this header will greatly increase the portability of applications +across platforms. +.SH RATIONALE +The ISO/IEC\ 9899:\|1990 standard specified that the language should support four signed and +unsigned integer data types\(em\c +.BR char , +.BR short , +.BR int , +and +.BR long \(em\c +but placed very little requirement on their size other than that +.BR int +and +.BR short +be at least 16 bits and +.BR long +be at least as long as +.BR int +and not smaller than 32 bits. For 16-bit systems, most implementations +assigned 8, 16, 16, and 32 bits to +.BR char , +.BR short , +.BR int , +and +.BR long , +respectively. For 32-bit systems, the common practice has been to +assign 8, 16, 32, and 32 bits to these types. This difference in +.BR int +size can create some problems for users who migrate from one system to +another which assigns different sizes to integer types, because the +ISO\ C standard integer promotion rule can produce silent changes unexpectedly. +The need for defining an extended integer type increased with the +introduction of 64-bit systems. +.SH "FUTURE DIRECTIONS" +Macro names beginning with PRI or SCN followed by any lowercase letter +or +.BR 'X' +may be added to the macros defined in the +.IR <inttypes.h> +header. +.SH "SEE ALSO" +.IR "\fB<stddef.h>\fP" +.P +The System Interfaces volume of POSIX.1\(hy2008, +.IR "Section 2.2" ", " "The Compilation Environment", +.IR "\fIimaxabs\fR\^(\|)", +.IR "\fIimaxdiv\fR\^(\|)", +.IR "\fIstrtoimax\fR\^(\|)", +.IR "\fIwcstoimax\fR\^(\|)" +.SH COPYRIGHT +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 +http://www.unix.org/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 . |