From: hackbard Date: Sun, 9 Sep 2007 19:52:47 +0000 (+0200) Subject: added some functions usually served by libc X-Git-Url: https://hackdaworld.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=62c9b5c57e036a7a2cae5670349b86b060775706;p=my-code%2Farm.git added some functions usually served by libc --- diff --git a/betty/functions.c b/betty/functions.c new file mode 100644 index 0000000..43dfebc --- /dev/null +++ b/betty/functions.c @@ -0,0 +1,58 @@ +/* + * * functions.c - severla functions usually served by libc + * + * author: hackbard@hackdaworld.org + * + */ + +#include "functions.h" + +/* + * functions + */ + +int strlen(char *string) { + + int cnt; + + cnt=0; + + while(string[cnt]) + cnt++; + + return cnt; +} + +int strncmp(char *a,char *b,int n) { + + if(!n) + return 0; + + while(n--) { + if(*a!=*b) + return (*(u8 *)a-*(u8 *)b++); + if(!*a++) + break; + } + + return 0; +} + +int strncpy(char *d,char *s,int n) { + + while(n) { + n--; + d[n]=s[n]; + } + + return 0; +} + +int mset(u8 *s,u8 v,int n) { + + while(n) + s[--n]=v; + + return 0; +} + diff --git a/betty/functions.h b/betty/functions.h new file mode 100644 index 0000000..db55296 --- /dev/null +++ b/betty/functions.h @@ -0,0 +1,23 @@ +/* + * * functions.h - functions header file + * + * author: hackbard@hackdaworld.org + * + */ + +#ifndef FUNCTIONS_H +#define FUNCTIONS_H + +#include "lpc2xxx.h" +#include "types.h" + +/* + * function prototypes + */ + +int strlen(char *string); +int strncmp(char *a,char *b,int n); +int strncpy(char *d,char *s,int n); +int mset(u8 *s,u8 v,int n); + +#endif