Man Memcmp. Learn about its library, attributes, standards, history, caveat
Learn about its library, attributes, standards, history, caveats and related functions. I am trying to create my own memcmp file but whenever I compare it with original memcmp function the equal strings return zero but in case of unequal strings return values are . memcmp () compares the first n bytes of two memory areas and returns an integer indicating the result. Verwenden Sie memcmp () nicht, um sicherheitskritische Daten wie kryptographische Geheimnisse zu verglei‐ chen, da die benötigte CPU-Zeit abhängig von der Anzahl gleicher The memcmp () function returns an integer less than, equal to, or greater than zero if the first n bytes of s1 is found, respectively, to be less than, to match, or be greater than the first n bytes For example, memcmp() between two objects of type std::string or std::vector will not compare their contents, memcmp() between two objects of type struct { char c; int n; } will 説明 memcmp () 関数は、メモリ領域 s1 と s2 の最初の n バイトを比較する (各バイトは unsigned char として解釈される)。 ANMERKUNGEN Verwenden Sie memcmp () nicht, um sicherheitskritische Daten wie kryptographische Geheimnisse zu vergleichen, da die benötigte CPU-Zeit abhängig von der memcmp () 関 数 は 、 メ モ リ ー 領 域 s1 と s2 の 最 初 の n バ イ ト を 比 較 す る (各 バ イ ト は unsigned char と し て 解 釈 さ れ る )。 Verwenden Sie memcmp () nicht, um vertrauliche Daten wie kryptographische Geheimnisse zu vergleichen; da die benötigte CPU-Zeit abhängig vom Inhalt der verglichenen Adressen ist, ist In C, memcmp () is a built-in function used to compare the given number of bytes of data pointed by two pointers passed as Notes This function reads object representations, not the object values, and is typically meaningful for byte arrays only: structs may have padding bytes whose values are MEMCMP (3) Linux Programmer's Manual MEMCMP (3) NAME memcmp - compare memory areas SYNOPSIS #include <string. h> int memcmp (const Compares the first num bytes of the block of memory pointed by ptr1 to the first num bytes pointed by ptr2, returning zero if they all match or a value different from zero representing which is The memcmp () function shall return an integer greater than, equal to, or less than 0, if the object pointed to by s1 is greater than, equal to, or less than the object pointed to by s2, respectively. Devuelve un entero menor, igual a o mayor que cero si s1 es, respectivamente, menor, igual o mayor La fonction memcmp () renvoie un entier négatif, nul ou positif si les n premiers octets de s1 sont respectivement inférieurs, égaux ou supérieurs aux n premiers octets de s2. 이 함 수 는 s1 이 s2 보 다 작 거 나 같 거 나 크 다 면 , 각 각 0보 다 작 은 정 수 , 0, 0보 다 큰 정 수 를 반 환 한 다 . memcmp - vergleicht Speicherbereiche. h> int memcmp(const void *s1, const void *s2, size_t n); memcmp(3) BSD Library Functions Manual memcmp(3) NAME memcmp -- compare byte string LIBRARY Standard C Library (libc, -lc) SYNOPSIS #include <string. A description of the project, information about reporting bugs, and the The memcmp () function returns an integer less than, equal to, or greater than zero if the first n bytes of s1 is found, respectively, to be less than, to match, or be greater than the first n bytes memcmp () 함 수 는 메 모 리 영 역 s1 과 s2 의 처 음 n 바 이 트 를 비 교 한 다 . The memcmp () function compares the first n bytes (each interpreted as unsigned char) of the memory areas s1 and s2. The memcmp () function returns zero if the Do not use memcmp () to compare security critical data, such as cryptographic secrets, because the required CPU time depends on the number of equal bytes. Both strings are assumed to be n bytes long. Instead, a function that The memcmp () function returns an integer less than, equal to, or greater than zero if the first n bytes of s1 is found, respectively, to be less than, to match, or be greater than the first n bytes Die Funktion memcmp () gibt eine Ganzzahl zurück, die kleiner als, gleich oder größer als Null ist, wenn die ersten n Byte von s1 kleiner als, gleich oder größer als die ersten n Byte von s2 sind. casecmp(3), strncmp(3), wmemcmp(3) COLOPHON This page is part of release 5. NAME memcmp - compare memory areas SYNOPSIS #include <string. h> int memcmp(const void *s1, const void *s2, size_t n); DESCRIPTION The memcmp() function compares the first n Standard C Library (libc, -lc) The memcmp () function compares byte string s1 against byte string s2. Die Funktion memcmp () gibt eine Ganzzahl zurück, die kleiner als, gleich oder größer als Null ist, wenn die ersten n Byte von s1 kleiner als, gleich oder größer als die ersten n Byte von s2 sind. 05 of the Linux man-pages project. The memcmp () function returns an integer less than, equal to, or greater than zero if the first n bytes of s1 is found, respectively, to be less than, to match, or be greater than the first n bytes La funcion memcmp () compara los primeros n bytes de las areas de memoria s1 y s2. Die Funktion memcmp () vergleicht die ersten n Byte (jedes wird als unsigned char interpretiert) der Speicherbereiche s1 und s2.