Standard library header <stdint.h> (C99)

 

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Technical Specifications

Symbol index

 

Standard Library headers

<assert.h> <complex.h> (C99) <ctype.h> <errno.h> <fenv.h> (C99) <float.h> <inttypes.h> (C99)     <iso646.h> (C95) <limits.h> <locale.h> <math.h>

<setjmp.h> <signal.h> <stdalign.h> (C11*) <stdarg.h> <stdatomic.h> (C11)     <stdbit.h> (C23) <stdbool.h> (C99*) <stdckdint.h> (C23) <stddef.h> <stdint.h> (C99) <stdio.h>

<stdlib.h> <stdmchar.h> (C29) <stdnoreturn.h> (C11*) <string.h> <tgmath.h> (C99) <threads.h> (C11) <time.h> <uchar.h> (C11) <wchar.h> (C95) <wctype.h> (C95)

 

This header is part of types support library, providing fixed width integer types and a part of numeric limits interface.

Synopsis

typedef /*signed-integer-type*/     int8_t         ; // optional
typedef /*signed-integer-type*/     int16_t        ; // optional
typedef /*signed-integer-type*/     int32_t        ; // optional
typedef /*signed-integer-type*/     int64_t        ; // optional
typedef /* see description */       intN_t         ; // optional, see description
 
typedef /*signed-integer-type*/     int_fast8_t    ;
typedef /*signed-integer-type*/     int_fast16_t   ;
typedef /*signed-integer-type*/     int_fast32_t   ;
typedef /*signed-integer-type*/     int_fast64_t   ;
typedef /* see description */       int_fastN_t    ; // optional, see description
 
typedef /*signed-integer-type*/     int_least8_t   ;
typedef /*signed-integer-type*/     int_least16_t  ;
typedef /*signed-integer-type*/     int_least32_t  ;
typedef /*signed-integer-type*/     int_least64_t  ;
typedef /* see description */       int_leastN_t   ; // optional, see description
 
typedef /*signed-integer-type*/     intmax_t       ;
typedef /*signed-integer-type*/     intptr_t       ; // optional
 
typedef /*unsigned-integer-type*/   uint8_t        ; // optional
typedef /*unsigned-integer-type*/   uint16_t       ; // optional
typedef /*unsigned-integer-type*/   uint32_t       ; // optional
typedef /*unsigned-integer-type*/   uint64_t       ; // optional
typedef /* see description */       uintN_t        ; // optional, see description
 
typedef /*unsigned-integer-type*/   uint_fast8_t   ;
typedef /*unsigned-integer-type*/   uint_fast16_t  ;
typedef /*unsigned-integer-type*/   uint_fast32_t  ;
typedef /*unsigned-integer-type*/   uint_fast64_t  ;
typedef /* see description */       uint_fastN_t   ; // optional, see description
 
typedef /*unsigned-integer-type*/   uint_least8_t  ;
typedef /*unsigned-integer-type*/   uint_least16_t ;
typedef /*unsigned-integer-type*/   uint_least32_t ;
typedef /*unsigned-integer-type*/   uint_least64_t ;
typedef /* see description */       uint_leastN_t  ; // optional, see description
 
typedef /*unsigned-integer-type*/   uintmax_t      ;
typedef /*unsigned-integer-type*/   uintptr_t      ; // optional
 
#define INTN_MIN         /* see description */
#define INTN_MAX         /* see description */
#define UINTN_MAX        /* see description */
 
#define INT_FASTN_MIN    /* see description */
#define INT_FASTN_MAX    /* see description */
#define UINT_FASTN_MAX   /* see description */
 
#define INT_LEASTN_MIN   /* see description */
#define INT_LEASTN_MAX   /* see description */
#define UINT_LEASTN_MAX  /* see description */
 
#define INTMAX_MIN       /* see description */
#define INTMAX_MAX       /* see description */
#define UINTMAX_MAX      /* see description */
 
#define INTPTR_MIN       /* see description */        // optional
#define INTPTR_MAX       /* see description */        // optional
#define UINTPTR_MAX      /* see description */        // optional
 
#define PTRDIFF_MIN      /* see description */
#define PTRDIFF_MAX      /* see description */
#define SIZE_MAX         /* see description */
 
#define SIG_ATOMIC_MIN   /* see description */
#define SIG_ATOMIC_MAX   /* see description */
 
#define WCHAR_MIN        /* see description */
#define WCHAR_MAX        /* see description */
 
#define WINT_MIN         /* see description */
#define WINT_MAX         /* see description */
 
#define INTN_C(value)    /* see description */
#define UINTN_C(value)   /* see description */
#define INTMAX_C(value)  /* see description */
#define UINTMAX_C(value) /* see description */

Only if the implementation defines __STDC_LIB_EXT1__ and additionally the user code defines __STDC_WANT_LIB_EXT1__ before any inclusion of stdint.h:

#if defined(__STDC_WANT_LIB_EXT1__)
#define RSIZE_MAX /* see description */
#endif