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renamed finalp() to cnp() and changed args

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This commit is contained in:
Ahmet Inan 2019-09-23 13:07:38 +02:00
commit 8f5d8d42ae
2 changed files with 18 additions and 18 deletions
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18
ldpc_decoder.hh
View file

@ -64,12 +64,12 @@ class LDPCDecoder
{
return orr(eor(a, b), vdup<TYPE>(127));
}
static void finalp(TYPE *links, int cnt)
static void cnp(TYPE *out, const TYPE *inp, int cnt)
{
auto beta = vunsigned(vdup<TYPE>(BETA));
TYPE mags[cnt];
for (int i = 0; i < cnt; ++i)
mags[i] = vsigned(vqsub(vunsigned(vqabs(links[i])), beta));
mags[i] = vsigned(vqsub(vunsigned(vqabs(inp[i])), beta));
TYPE mins[2];
mins[0] = vmin(mags[0], mags[1]);
@ -79,12 +79,12 @@ class LDPCDecoder
mins[0] = vmin(mins[0], mags[i]);
}
TYPE signs = links[0];
TYPE signs = inp[0];
for (int i = 1; i < cnt; ++i)
signs = eor(signs, links[i]);
signs = eor(signs, inp[i]);
for (int i = 0; i < cnt; ++i)
links[i] = vsign(other(mags[i], mins[0], mins[1]), mine(signs, links[i]));
out[i] = vsign(other(mags[i], mins[0], mins[1]), mine(signs, inp[i]));
}
static TYPE rotate(TYPE a, int s)
{
@ -166,10 +166,10 @@ class LDPCDecoder
mes[c] = rotate(msg[offset[c]/D+shift[c]%W], -shift[c]/W);
TYPE inp[deg], out[deg];
for (int c = 0; c < cnt; ++c)
inp[c] = out[c] = vqsub(mes[c], bl[c]);
inp[cnt] = out[cnt] = vqsub(par[0], bl[cnt]);
inp[cnt+1] = out[cnt+1] = vqsub(par[1], bl[cnt+1]);
finalp(out, deg);
inp[c] = vqsub(mes[c], bl[c]);
inp[cnt] = vqsub(par[0], bl[cnt]);
inp[cnt+1] = vqsub(par[1], bl[cnt+1]);
cnp(out, inp, deg);
for (int c = 0; c < cnt; ++c)
mes[c] = vqadd(inp[c], out[c]);
par[0] = vqadd(inp[cnt], out[cnt]);

18
ldpc_decoder2.hh
View file

@ -66,12 +66,12 @@ class LDPCDecoder
{
return orr(eor(a, b), vdup<TYPE>(127));
}
static void finalp(TYPE *links, int cnt)
static void cnp(TYPE *out, const TYPE *inp, int cnt)
{
auto beta = vunsigned(vdup<TYPE>(BETA));
TYPE mags[cnt];
for (int i = 0; i < cnt; ++i)
mags[i] = vsigned(vqsub(vunsigned(vqabs(links[i])), beta));
mags[i] = vsigned(vqsub(vunsigned(vqabs(inp[i])), beta));
TYPE mins[2];
mins[0] = vmin(mags[0], mags[1]);
@ -81,12 +81,12 @@ class LDPCDecoder
mins[0] = vmin(mins[0], mags[i]);
}
TYPE signs = links[0];
TYPE signs = inp[0];
for (int i = 1; i < cnt; ++i)
signs = eor(signs, links[i]);
signs = eor(signs, inp[i]);
for (int i = 0; i < cnt; ++i)
links[i] = vsign(other(mags[i], mins[0], mins[1]), mine(signs, links[i]));
out[i] = vsign(other(mags[i], mins[0], mins[1]), mine(signs, inp[i]));
}
static TYPE rotate(TYPE a, int s)
{
@ -162,10 +162,10 @@ class LDPCDecoder
mes[c] = rotate(msg[of[c]], -sh[c]);
TYPE inp[deg], out[deg];
for (int c = 0; c < cnt; ++c)
inp[c] = out[c] = vqsub(mes[c], bl[c]);
inp[cnt] = out[cnt] = vqsub(par[0], bl[cnt]);
inp[cnt+1] = out[cnt+1] = vqsub(par[1], bl[cnt+1]);
finalp(out, deg);
inp[c] = vqsub(mes[c], bl[c]);
inp[cnt] = vqsub(par[0], bl[cnt]);
inp[cnt+1] = vqsub(par[1], bl[cnt+1]);
cnp(out, inp, deg);
for (int c = 0; c < cnt; ++c)
mes[c] = vqadd(inp[c], out[c]);
par[0] = vqadd(inp[cnt], out[cnt]);