inttypes(3) [netbsd man page]
INTTYPES(3) BSD Library Functions Manual INTTYPES(3) NAME
inttypes -- standard fixed-size integer types SYNOPSIS
#include <inttypes.h> DESCRIPTION
The <inttypes.h> header describes a set of format specifier macros aimed to increase portability both within and across operating systems. It includes the <stdint.h> header and extends it with additional facilities. Each of the following macros expand to a character string literal containing the format specifier suitable for use within the format argument of a formatted I/O function such as printf(3). Each macro contains an identifier (PRI or SCN), a conversion specifier, and a possible length modifier. The length modifier follows the integer types described in stdint(3): int8_t uint8_t int16_t uint16_t int32_t uint32_t int64_t uint64_t int_least8_t uint_least8_t int_least16_t uint_least16_t int_least32_t uint_least32_t int_least64_t uint_least64_t int_fast8_t uint_fast8_t int_fast16_t uint_fast16_t int_fast32_t uint_fast32_t int_fast64_t uint_fast64_t intmax_t uintmax_t intptr_t uintptr_t The following format specifiers are defined for the fprintf(3) and fscanf(3) families, respectively: PRI?8 SCN?8 PRI?16 SCN?16 PRI?32 SCN?32 PRI?64 SCN?64 PRI?LEAST8 SCN?LEAST8 PRI?LEAST16 SCN?LEAST16 PRI?LEAST32 SCN?LEAST32 PRI?LEAST64 SCN?LEAST64 PRI?FAST8 SCN?FAST8 PRI?FAST16 SCN?FAST16 PRI?FAST32 SCN?FAST32 PRI?FAST64 SCN?FAST64 PRI?MAX SCN?MAX PRI?PTR SCN?PTR The available conversion specifiers, ``?'' in above, are d and i for signed integers and o, u, x, and X for unsigned integers. The X is not available for the fscanf(3) family. Without the length modifier these would correspond with %d, %i, %o, %u, %x, and %X, respectively. EXAMPLES
The following example demonstrates typical usage: uint64_t i = 123; ... (void)printf("i = %"PRIu64" ", i); SEE ALSO
printf(3), scanf(3), stdint(3) STANDARDS
The <inttypes.h> header conforms to ISO/IEC 9899:1999 (``ISO C99'') and IEEE Std 1003.1-2001 (``POSIX.1''). HISTORY
The <inttypes.h> header was first introduced in NetBSD 1.6. BSD
March 21, 2010 BSD
Check Out this Related Man Page
inttypes.h(3HEAD) Headers inttypes.h(3HEAD) NAME
inttypes.h, inttypes - fixed size integer types SYNOPSIS
#include <inttypes.h> DESCRIPTION
The <inttypes.h> header includes the <stdint.h> header. The <inttypes.h> header includes a definition of the following type: imaxdiv_t structure type that is the type of the value returned by the imaxdiv() function. The following macros are defined. Each expands to a character string literal containing a conversion specifier, possibly modified by a length modifier, suitable for use within the 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 fprintf() and fwprintf() family of functions) or SCN (character string literals for the fscanf() and fwscanf() family of functions), followed by the conversion specifier, followed by a name corresponding to a similar type name in <stdint.h>. In these names, N represents the width of the type as described in <stdint.h>. For example, PRIdFAST32 can be used in a format string to print the value of an integer of type int_fast32_t. The fprintf() macros for signed integers are: PRIdN PRIdLEASTN PRIdFASTN PRIdMAX PRIdPTR PRIiN PRIiLEASTN PRIiFASTN PRIiMAX PRIiPTR The fprintf() macros for unsigned integers are: PRIoN PRIoLEASTN PRIoFASTN PRIoMAX PRIoPTR PRIuN PRIuLEASTN PRIuFASTN PRIuMAX PRIuPTR PRIxN PRIxLEASTN PRIxFASTN PRIxMAX PRIxPTR PRIXN PRIXLEASTN PRIXFASTN PRIXMAX PRIXPTR The fscanf() macros for signed integers are: SCNdN SCNdLEASTN SCNdFASTN SCNdMAX SCNdPTR SCNiN SCNiLEASTN SCNiFASTN SCNiMAX SCNiPTR The fscanf() macros for unsigned integers are: SCNoN SCNoLEASTN SCNoFASTN SCNoMAX SCNoPTR SCNuN SCNuLEASTN SCNuFASTN SCNuMAX SCNuPTR SCNxN SCNxLEASTN SCNxFASTN SCNxMAX SCNxPTR For each type that the implementation provides in <stdint.h>, the corresponding fprintf() and fwprintf() macros must be defined. The cor- responding fscanf() and fwscanf() macros must be defined as well, unless the implementation does not have a suitable modifier for the type. USAGE
The purpose of <inttypes.h> is to provide a set of integer types whose definitions are consistent across machines and independent of oper- ating systems and other implementation idiosyncrasies. It defines, with a typedef, integer types of various sizes. Implementations are free to typedef them as ISO C standard integer types or extensions that they support. Consistent use of this header greatly increases the porta- bility of applications across platforms. EXAMPLES
Example 1 Use of Macro The following code uses one of the macros available through <inttypes.h>. #include <inttypes.h> #include <wchar.h> int main(void) { uintmax_t i = UINTMAX_MAX; // This type always exists. wprintf("The largest integer value is %020" PRIxMAX, " ", i); return 0; } ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
imaxdiv(3C), attributes(5), standards(5) SunOS 5.11 10 Sep 2004 inttypes.h(3HEAD)