var import=   func(filename){return __builtin_import(filename);}
var print=    func(elems...){return __builtin_print(elems);}
var append=   func(vec,elems...){return __builtin_append(vec,elems);}
var setsize=  func(vec,size){return __builtin_setsize(vec,size);}
var system=   func(str){return __builtin_system(str);}
var input=    func(){return __builtin_input();}
var split=    func(deli,str){return __builtin_split(deli,str);}
var rand=     func(seed=nil){return __builtin_rand(seed);}
var id=       func(object){return __builtin_id(object);}
var int=      func(val){return __builtin_int(val);}
var num=      func(val){return __builtin_num(val);}
var pop=      func(vec){return __builtin_pop(vec);}
var str=      func(num){return __builtin_str(num);}
var size=     func(object){return __builtin_size(object);}
var contains= func(hash,key){return __builtin_contains(hash,key);}
var delete=   func(hash,key){return __builtin_delete(hash,key);}
var keys=     func(hash){return __builtin_keys(hash);}
var time=     func(begin){return __builtin_time(begin);}
var die=      func(str){return __builtin_die(str);}
var typeof=   func(object){return __builtin_type(object);}
var substr=   func(str,begin,len){return __builtin_substr(str,begin,len);}
var streq=    func(a,b){return __builtin_streq(a,b);}
var left=     func(str,len){return __builtin_left(str,len);}
var right=    func(str,len){return __builtin_right(str,len);}
var cmp=      func(a,b){return __builtin_cmp(a,b);}
var chr=      func(code){return __builtin_chr(code);}
var println=func(elems...){
    __builtin_print(elems);
    elems=['\n'];
    return __builtin_print(elems);
}

var io=
{
    SEEK_SET:0,
    SEEK_CUR:1,
    SEEK_END:2,
    fin:   func(filename){return __builtin_fin(filename);},
    fout:  func(filename,str){return __builtin_fout(filename,str);},
    open:  func(filename,mode="r"){return __builtin_open(filename,mode);},
    close: func(filehandle){return __builtin_close(filehandle);},
    read:  func(filehandle,buf,len){return __builtin_read(filehandle,buf,len);},
    write: func(filehandle,str){return __builtin_write(filehandle,str);},
    seek:  func(filehandle,pos,whence){return __builtin_seek(filehandle,pos,whence);},
    tell:  func(filehandle){return __builtin_tell(filehandle);},
    readln:func(filehandle){return __builtin_readln(filehandle);},
    stat:  func(filename){return __builtin_stat(filename);},
    eof:   func(filehandle){return __builtin_eof(filehandle);}
};

var bits=
{
    bitxor:  func(a,b){return __builtin_xor(a,b); },
    bitand:  func(a,b){return __builtin_and(a,b); },
    bitor:   func(a,b){return __builtin_or(a,b);  },
    bitnand: func(a,b){return __builtin_nand(a,b);},
    bitnot:  func(a)  {return __builtin_not(a);   },
    fld:     func(str,startbit,len){return __builtin_fld;},
    sfld:    func(str,startbit,len){return __builtin_sfld;},
    setfld:  func(str,startbit,len,val){return __builtin_setfld;},
    buf:     func(len){return __builtin_buf;}
};

var math=
{
    e:     2.7182818284590452354,
    pi:    3.14159265358979323846264338327950288,
    sin:   func(x)  {return __builtin_sin(x);    },
    cos:   func(x)  {return __builtin_cos(x);    },
    tan:   func(x)  {return __builtin_tan(x);    },
    exp:   func(x)  {return __builtin_exp(x);    }, 
    ln:    func(x)  {return __builtin_ln(x);     },
    sqrt:  func(x)  {return __builtin_sqrt(x);   },
    atan2: func(x,y){return __builtin_atan2(x,y);},
    inf:   1/0,
    nan:   0/0,
    isnan: func(x)  {return __builtin_isnan(x);  }
};
var D2R=math.pi/180;
var FPS2KT=0.5925;
var FT2M=0.3048;
var GAL2L=3.7854;
var IN2M=0.0254;
var KG2LB=2.2046;
var KT2FPS=1.6878;
var KT2MPS=0.5144;
var L2GAL=0.2642;
var LB2KG=0.4536;
var M2FT=3.2808;
var M2IN=39.3701;
var M2NM=0.00054;
var MPS2KT=1.9438;
var NM2M=1852;
var R2D=180/math.pi;

var unix=
{
    pipe:     func(){die("not supported yet");},
    fork:     func(){die("not supported yet");},
    dup2:     func(fd0,fd1){die("not supported yet");},
    exec:     func(filename,argv,envp){die("not supported yet");},
    waitpid:  func(pid,nohang=0){die("not supported yet");},
    opendir:  func(path){return __builtin_opendir;},
    readdir:  func(handle){return __builtin_readdir;},
    closedir: func(handle){return __builtin_closedir;},
    time:     func(){return time(0);},
    sleep:    func(secs){return __builtin_sleep(secs);},
    chdir:    func(path){return __builtin_chdir(path);},
    environ:  func(){die("not supported yet");},
    getcwd:   func(){return __builtin_getcwd();},
    getenv:   func(envvar){return __builtin_getenv(envvar);}
};