STDINT(3)               NetBSD Library Functions Manual              STDINT(3)


NAME
stdint -- standard integer types
SYNOPSIS
#include <stdint.h>
DESCRIPTION
The <stdint.h> header provides source-portable integer types of a spe- cific size, smallest memory footprint with a minimum size, fastest access speed with a minimum size, largest integer size, and those capable of storing pointers. The types int8_t, int16_t, int32_t, and int64_t provide a signed integer type of width 8, 16, 32, or 64 bits, respectively. The types uint8_t, uint16_t, uint32_t, and uint64_t provide an unsigned integer type of width 8, 16, 32, or 64 bits, respectively. These integer types should be used when a specific size is required. The types int_fast8_t, int_fast16_t, int_fast32_t, and int_fast64_t pro- vide the fastest signed integer type with a width of at least 8, 16, 32, or 64 bits, respectively. The types uint_fast8_t, uint_fast16_t, uint_fast32_t, and uint_fast64_t provide the fastest unsigned integer type with a width of at least 8, 16, 32, or 64 bits, respectively. These types should be used when access speed is paramount, and when a specific size is not required. The types int_least8_t, int_least16_t, int_least32_t, and int_least64_t provide the smallest memory footprint signed integer type with a width of at least 8, 16, 32, or 64 bits, respectively. The types uint_least8_t, uint_least16_t, uint_least32_t, and uint_least64_t provide the smallest memory footprint unsigned integer type with a width of at least 8, 16, 32, or 64 bits, respectively. These types should be used when memory storage is of concern, and when a specific size is not required. The type intmax_t provides a signed integer type large enough to hold any other signed integer. The type uintmax_t provides an unsigned integer type large enough to hold any other unsigned integer. These types are generally the largest signed and unsigned integer types available on a specific architecture. The type intptr_t provides a signed integer type with the ability to hold a pointer to void, that can later be converted back to a pointer to void. The type uintptr_t provides an unsigned integer type with the ability to hold a pointer to void, that can later be converted back to a pointer to void.
SEE ALSO
inttypes(3), limits(3), stdbool(3), unistd(3)
STANDARDS
The <stdint.h> header conforms to ISO/IEC 9899:1999 (``ISO C99'') and IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
The <stdint.h> header was first introduced in NetBSD 1.6. NetBSD 8.1 August 9, 2011 NetBSD 8.1

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