#include #include __ATTR_LIB_C__ short atoi(const char *s) { unsigned short c,value=0,neg=0; while(*s==' ') ++s; if(*s=='-'||*(const unsigned char*)s==0xAD) ++s,neg=-1; else if(*s=='+') ++s; while(isdigit(c=*(const unsigned char*)s++)) value=10*value+c-'0'; return neg?-value:value; }