From bf44088d4373a9520e860152c56a958332819c4b Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano@tronto.net>
Date: Mon, 1 May 2023 16:33:51 +0200
Subject: Split nissy in other repos, see README.md

---
 old/maybe-useful-coord.c | 181 -----------------------------------------------
 1 file changed, 181 deletions(-)
 delete mode 100644 old/maybe-useful-coord.c

(limited to 'old/maybe-useful-coord.c')

diff --git a/old/maybe-useful-coord.c b/old/maybe-useful-coord.c
deleted file mode 100644
index 9ab2971..0000000
--- a/old/maybe-useful-coord.c
+++ /dev/null
@@ -1,181 +0,0 @@
-int
-array_ep_to_epos(int *ep, int *ss)
-{
-	int epos[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-	int eps[4];
-	int i, j, is;
-
-	for (i = 0, is = 0; i < 12; i++) {
-		for (j = 0; j < 4; j++) {
-			if (ep[i] == ss[j]) {
-				eps[is++] = j;
-				epos[i] = 1;
-			}
-		}
-	}
-
-	for (i = 0; i < 4; i++)
-		swap(&epos[ss[i]], &epos[i+8]);
-
-	return 24 * subset_to_index(epos, 12, 4) + perm_to_index(eps, 4);
-}
-
-void
-epos_to_compatible_ep(int epos, int *ep, int *ss)
-{
-	int i, j, k, other[8];
-	bool flag;
-
-	for (i = 0; i < 12; i++)
-		ep[i] = -1;
-
-	epos_to_partial_ep(epos, ep, ss);
-
-	for (i = 0, j = 0; i < 12; i++) {
-		flag = false;
-		for (k = 0; k < 4; k++)
-			flag = flag || (i == ss[k]);
-		if (!flag)
-			other[j++] = i;
-	}
-		
-	for (i = 0, j = 0; i < 12; i++)
-		if (ep[i] == -1)
-			ep[i] = other[j++];
-}
-
-void
-epos_to_partial_ep(int epos, int *ep, int *ss)
-{
-	int i, is, eposs[12], eps[4];
-
-	index_to_perm(epos % FACTORIAL4, 4, eps);
-	index_to_subset(epos / FACTORIAL4, 12, 4, eposs);
-
-	for (i = 0; i < 4; i++)
-		swap(&eposs[ss[i]], &eposs[i+8]);
-
-	for (i = 0, is = 0; i < 12; i++)
-		if (eposs[i])
-			ep[i] = ss[eps[is++]];
-}
-
-void
-fix_eorleoud(CubeArray *arr)
-{
-	int i;
-
-	for (i = 0; i < 12; i++) {
-		if ((edge_slice(i) == 0 && edge_slice(arr->ep[i]) != 0) ||
-		    (edge_slice(i) != 0 && edge_slice(arr->ep[i]) == 0)) {
-			arr->eorl[i] = 1 - arr->eofb[i];
-		} else {
-			arr->eorl[i] = arr->eofb[i];
-		}
-
-		if ((edge_slice(i) == 2 && edge_slice(arr->ep[i]) != 2) ||
-		    (edge_slice(i) != 2 && edge_slice(arr->ep[i]) == 2)) {
-			arr->eoud[i] = 1 - arr->eofb[i];
-		} else {
-			arr->eoud[i] = arr->eofb[i];
-		}
-	}
-}
-
-void
-fix_cofbcorl(CubeArray *arr)
-{
-	int i;
-
-	for (i = 0; i < 8; i++) {
-		if (i % 2 == arr->cp[i] % 2) {
-			arr->cofb[i] = arr->coud[i];
-			arr->corl[i] = arr->coud[i];
-		} else {
-			if (arr->cp[i] % 2 == 0) {
-				arr->cofb[i] = (arr->coud[i]+1)%3;
-				arr->corl[i] = (arr->coud[i]+2)%3;
-			} else {
-				arr->cofb[i] = (arr->coud[i]+2)%3;
-				arr->corl[i] = (arr->coud[i]+1)%3;
-			}
-		}
-	}
-}
-
-Cube
-admissible_ep(Cube cube, PieceFilter f)
-{
-	CubeArray *arr = new_cubearray(cube, f);
-	Cube ret;
-	bool used[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-	int i, j;
-
-	for (i = 0; i < 12; i++)
-		if (arr->ep[i] != -1)
-			used[arr->ep[i]] = true;
-
-	for (i = 0, j = 0; i < 12; i++) {
-		for ( ; j < 11 && used[j]; j++);
-		if (arr->ep[i] == -1)
-			arr->ep[i] = j++;
-	}
-
-	ret = arrays_to_cube(arr, pf_ep);
-	free_cubearray(arr, f);
-
-	return ret;
-}
-
-int
-edge_slice(Edge e) {
-	if (e < 0 || e > 11)
-		return -1;
-
-	if (e == FR || e == FL || e == BL || e == BR)
-		return 0;
-	if (e == UR || e == UL || e == DR || e == DL)
-		return 1;
-
-	return 2;
-}
-
-int
-piece_orientation(Cube cube, int piece, char *orientation)
-{
-	int arr[12], n, b, x;
-
-	if (!strcmp(orientation, "eofb")) {
-		x = cube.eofb;
-		n = 12;
-		b = 2;
-	} else if (!strcmp(orientation, "eorl")) {
-		x = cube.eorl;
-		n = 12;
-		b = 2;
-	} else if (!strcmp(orientation, "eoud")) {
-		x = cube.eoud;
-		n = 12;
-		b = 2;
-	} else if (!strcmp(orientation, "coud")) {
-		x = cube.coud;
-		n = 8;
-		b = 3;
-	} else if (!strcmp(orientation, "corl")) {
-		x = cube.corl;
-		n = 8;
-		b = 3;
-	} else if (!strcmp(orientation, "cofb")) {
-		x = cube.cofb;
-		n = 8;
-		b = 3;
-	} else {
-		return -1;
-	}
-
-	int_to_sum_zero_array(x, b, n, arr);
-	if (piece < n)
-		return arr[piece];
-
-	return -1;
-}
-- 
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