histptr           353 libgd/gd_topal.c   register histptr histp;
histptr           477 libgd/gd_topal.c   histptr histp;
histptr           722 libgd/gd_topal.c   histptr histp;
histptr          1221 libgd/gd_topal.c   register histptr cachep;	/* pointer into main cache array */
histptr          1305 libgd/gd_topal.c   register histptr cachep;
histptr          1380 libgd/gd_topal.c   histptr cachep;