welibc
A clear, secure, and well documented standard C library
strcmp.c
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1 /*******************************************************************************
2  Copyright (c) 2018 Walt Elam
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30 *******************************************************************************/
31 /***************************************************************************//**
32  @file strcmp.c
33 
34  @brief Defines the strcmp function
35 *******************************************************************************/
36 #include <string.h>
37 
38 /*******************************************************************************
39  strcmp
40 *//**
41  @brief Compares the strings pointed to be s1 and s2
42  @param *s1 The first string to be compared
43  @param *s2 The second string to be compared
44 
45  The strcmp function compares the string pointed to by s1 to the string
46  pointed to by s2.
47 
48  @return Integer indicating if s1 is greater than, equal to, or less than s2
49  @retval >0 s1 is greater than s2 or no comparison could be made
50  @retval 0 s1 is equal to s2
51  @retval <0 s1 is less than s2
52 *******************************************************************************/
53 int
54 strcmp(const char *s1, const char *s2)
55 {
56  return memcmp(s1, s2, strlen(s1) + 1);
57 }
58 
strlen
size_t strlen(const char *s)
Computes the length of a string.
Definition: strlen.c:51
string.h
Declares types, functions, and macros for manipulating arrays of character type and other objects tre...
strcmp
int strcmp(const char *s1, const char *s2)
Compares the strings pointed to be s1 and s2.
Definition: strcmp.c:54
memcmp
int memcmp(const void *s1, const void *s2, size_t n)
Compares the first n characters of s1 and s2.
Definition: memcmp.c:68