adding custom job

[Feefty]

Hi, im trying to add a custom job for only item suit.

but im getting an error compiling my rathena

1>c:\svn16928\src\map\itemdb.c(273): warning C4293: '<<' : shift count negative or too big, undefined behavior
1>c:\svn16928\src\map\itemdb.c(275): warning C4293: '<<' : shift count negative or too big, undefined behavior
1>c:\svn16928\src\map\itemdb.c(277): warning C4293: '<<' : shift count negative or too big, undefined behavior

if (jobmask & 1<<29) //Kagerou / Oboro
 bclass[1] |= 1<<MAPID_NINJA;
if (jobmask & 1<<35) // Gondaime
   bclass[0] |= 1<<MAPID_GONDAIME;
if (jobmask & 1<<36)
   bclass[0] |= 1<<MAPID_YONDAIME;
if (jobmask & 1<<37)
   bclass[0] |= 1<<MAPID_AKATSUKI;

im following this guide http://rathena.org/wiki/Custom_Jobs

Thanks.