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Name

Synopsis

#include <string.h>

void *memccpy(void *s1, const void *s2, int c, size_t n);

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

int memcmp(const void *s1, const void *s2, size_t n);

void *memcpy(void *s1, const void *s2, size_t n);

void *memmove(void *s1, const void *s2, size_t n);

void *memset(void *s, int c, size_t n);

MT-Level

MT-Safe

Description

memccpy() copies bytes from memory area s2 into s1, stopping after the first occurrence of c (converted to an unsigned char) has been copied, or after n bytes have been copied, whichever comes first. It returns a pointer to the byte after the copy of c in s1, or a null pointer if c was not found in the first n bytes of s2.

memchr() returns a pointer to the first occurrence of c (converted to an unsigned char) in the first n bytes (each interpreted as an unsigned char) of memory area s, or a null pointer if c does not occur.

memcmp() compares its arguments, looking at the first n bytes (each interpreted as an unsigned char), and returns an integer less than, equal to, or greater than 0, according as s1 is lexicographically less than, equal to, or greater than s2 when taken to be unsigned characters.

memcpy() copies n bytes from memory area s2 to s1. It returns s1.

memmove() copies n bytes from memory areas s2 to s1. Copying between objects that overlap will take place correctly. It returns s1.

memset() sets the first n bytes in memory area s to the value of c (converted to an unsigned char). It returns s.

See Also

Table of Contents

• Name
• Synopsis
• MT-Level
• Description
• See Also