C Library Header – stddef

The <stddef.h> header defines several standard definitions.

The <stddef.h> header shall define the following macro constants:

NULL	implementation-defined null pointer constant

The <stddef.h> header shall define the following function:

offsetof

byte offset from the beginning of a struct type to specified member (function macro)

The <stddef.h> header shall define the following type:

size_t	unsigned integer type returned by the sizeof operator
ptrdiff_t	signed integer type returned when subtracting two pointers
max_align_t	a type with alignment requirement as great as any other scalar type (C11)

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Related topics:
<stdint.h>   |   <stdio.h>   |   <stdlib.h>   |   <stdnoreturn.h>   |   <string.h>   |   Standard Library in C

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