//TODO: sort type-0 lists, functions, symbols, etc.
//note: K appears to sort _reserved functions by alphabetical order, but this may be a side effect of
// sorting by address (if the functions appear in alphabetical order in the source file)
// though oddly enough it appears to hold across all underscore/reserved functions (not just math)
// _in falls to the end since it is defined as some variation on a char func that works as an inline verb
// If you look at the binary the symbols appear to be listed out of alphabetical order
//one interesting way to test how functions are sorted would be to load the interpreter twice,
//inputting the same collection of functions each time but in a different order
//if the sort order changes for each instance then sorting is probably based on pointer/reference value
//if that fails then it may be necessary to look at distinctions between wordfunc,charfunc, valence, proj, etc
Z K grade_updown(K a, I r)
{
I at=a->t, an=a->n;
P(0< at, RE)
if(-3==at) R charGrade(a,r);
if(-1==at)
{
I x,u=II,v=-II;//MIN,MAX
DO(an, x=kI(a)[i]; if(x<u)u=x; if(x>v)v=x;)
if(v-u < 87654321) R distributionGrade(a,r,u,v);//Magic Number
K grade_updown(K a, I r)
{
I at=a->t, an=a->n;
P(0< at, RE)
if(-4==at)R symGrade(a,r);
if(-3==at)R charGrade(a,r);
if(-1==at||-2==at){
K z;
if(an<2){z=newK(-1,an);M(z);DO(an,kI(z)[i]=i);R z;}
else{
K x=0;uI y,u=(uI)-1,v=0,h=0,k;//MIN,MAX
if(-2==at){x=newK(-1,an);M(x);}
//trst();
//elapsed("x=newK");
if(-1==at)DO(an,y=kI(a)[i];h|=y;if(y<u)u=y;if(y>v)v=y)
else DO(an,kU(x)[i]=(y=FtoI(kF(a)[i]));h|=y;if(y<u)u=y;if(y>v)v=y)
//elapsed("fill x");
//O("u:%016llx v:%016llx\n",u,v);
if((r&&-1==at)||((u&MSB)!=(v&MSB))){
u=(uI)-1;v=0;h=0;
if(-1==at){
x=newK(-1,an);M(x);
DO(an,kU(x)[i]=(y=ItoU(kI(a)[i]));h|=y;if(y<u)u=y;if(y>v)v=y)}
else DO(an,kU(x)[i]=(y=ItoU(kI(x)[i]));h|=y;if(y<u)u=y;if(y>v)v=y)}