diff options
Diffstat (limited to 'lib/strcmp.c')
-rw-r--r-- | lib/strcmp.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/strcmp.c b/lib/strcmp.c new file mode 100644 index 0000000..c59f4f7 --- /dev/null +++ b/lib/strcmp.c @@ -0,0 +1,32 @@ +/** +** @file strcmp.c +** +** @author Numerous CSCI-452 classes +** +** @brief C implementations of common library functions +*/ + +#ifndef STRCMP_SRC_INC +#define STRCMP_SRC_INC + +#include <common.h> + +#include <lib.h> + +/** +** strcmp(s1,s2) - compare two NUL-terminated strings +** +** @param s1 The first source string +** @param s2 The second source string +** +** @return negative if s1 < s2, zero if equal, and positive if s1 > s2 +*/ +int strcmp( register const char *s1, register const char *s2 ) { + + while( *s1 != 0 && (*s1 == *s2) ) + ++s1, ++s2; + + return( *s1 - *s2 ); +} + +#endif |