// doesn't currently guard under/overflow
static long float32_pack(float val) {
int sign = 0;
int exp;
int mant;
if (val < 0) {
sign = 0x80000000;
val = -val;
}
exp = (int) Math.floor(Math.log(val) / Math.log(2));
mant = (int) Math.rint(Math.pow(val, (VQ_FMAN - 1) - exp));
exp = (exp + VQ_FEXP_BIAS) << VQ_FMAN;
return (sign | exp | mant);
}
Object look(DspState vd, InfoMode vm, Object vr) {
InfoResidue0 info = (InfoResidue0) vr;
LookResidue0 look = new LookResidue0();
int acc = 0;
int dim;
int maxstage = 0;
look.info = info;
look.map = vm.mapping;
look.parts = info.partitions;
look.fullbooks = vd.fullbooks;
look.phrasebook = vd.fullbooks[info.groupbook];
dim = look.phrasebook.dim;
look.partbooks = new int[look.parts][];
for (int j = 0; j < look.parts; j++) {
int i = info.secondstages[j];
int stages = Util.ilog(i);
if (stages != 0) {
if (stages > maxstage) maxstage = stages;
look.partbooks[j] = new int[stages];
for (int k = 0; k < stages; k++) {
if ((i & (1 << k)) != 0) {
look.partbooks[j][k] = info.booklist[acc++];
}
}
}
}
look.partvals = (int) Math.rint(Math.pow(look.parts, dim));
look.stages = maxstage;
look.decodemap = new int[look.partvals][];
for (int j = 0; j < look.partvals; j++) {
int val = j;
int mult = look.partvals / look.parts;
look.decodemap[j] = new int[dim];
for (int k = 0; k < dim; k++) {
int deco = val / mult;
val -= deco * mult;
mult /= look.parts;
look.decodemap[j][k] = deco;
}
}
return (look);
}