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   memchr.3p    ( 3 )

найти байт в памяти (find byte in memory)

Пролог (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.


Имя (Name)

memchr — find byte in memory


Синопсис (Synopsis)

#include <string.h>

void *memchr(const void *s, int c, size_t n);


Описание (Description)

The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1‐2017 defers to the ISO C standard.

The memchr() function shall locate the first occurrence of c (converted to an unsigned char) in the initial n bytes (each interpreted as unsigned char) pointed to by s.

Implementations shall behave as if they read the memory byte by byte from the beginning of the bytes pointed to by s and stop at the first occurrence of c (if it is found in the initial n bytes).


Возвращаемое значение (Return value)

The memchr() function shall return a pointer to the located byte, or a null pointer if the byte is not found.


Ошибки (Error)

No errors are defined.

The following sections are informative.


Примеры (Examples)

None.

Использование в приложениях (Application usage)

None.


Обоснование (Rationale)

None.


Будущие направления (Future directions)

None.


Смотри также (See also)

The Base Definitions volume of POSIX.1‐2017, string.h(0p)