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genspecialg.c
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/* genspecialg.c version 1.3; B D McKay, Mar 19, 2018 */
#define USAGE "genspecialg [-s|-g|-z|-d|-v] [-q]\n\
[-p#|-c#|-e#|-k#|-b#,#[,#]|-Q#|-f#|-J#,#\n\
|-P#,#|C#,#...|G#,#...|T#,#...]* [outfile]"
#define HELPTEXT \
" Generate special graphs.\n\
# : size parameter called n in the descriptions\n\
\n\
-s : Write in sparse6 format (default)\n\
-g : Write in graph6 format\n\
-z : Make digraph versions and write in digraph6 format\n\
-d : Write in dreadnaut format (can be used with -z)\n\
-v : For each graph, report the size to stderr\n\
-q : Suppress summary\n\
\n\
If defined, the digraph version is shown in parentheses:\n\
-p# : path (directed path) on n vertices.\n\
-c# : cycle (directed cycle) on n vertices.\n\
-e# : empty graph (digraph with loops only) on n vertices.\n\
-k# : complete graph (with loops) on n vertices\n\
-b#,#[,#] : complete bipartite graph (directed l->r) on n vertices\n\
minus a matching of given size if present\n\
-f# : flower snark on 4*# vertices\n\
-P#,# : generalized Petersen graph; usual one is -P5,2\n\
-Q# : hypercube on 2^n vertices and degree n.\n\
-J#,# : Johnson graph J(n,k), args are n and k.\n\
-C#,#... : circulant (di)graph.\n\
-T#,#... : theta (di)graph Theta(#,#,...), give path lengths.\n\
-G#,#... : (directed) grid, use negative values for open directions\n\
\n\
Any number of graphs can be generated at once.\n"
/* Ideas: multipartite, knesser, full trees, antiregular, individual */
#include "gtools.h"
#define MAXARGS 10000 /* Maximum argument list for multi-argument parameters */
#define SWAP(x,y) {int w = x; x = y; y = w;}
static long args[MAXARGS];
static short vmark_val = 32000;
DYNALLSTAT(short,vmark,vmark_sz);
#define MARK(i) vmark[i] = vmark_val
#define UNMARK(i) vmark[i] = 0
#define ISMARKED(i) (vmark[i] == vmark_val)
#define ISNOTMARKED(i) (vmark[i] != vmark_val)
#define RESETMARKS {if (vmark_val++ >= 32000) \
{size_t ij; for (ij=0;ij<vmark_sz;++ij) vmark[ij]=0; vmark_val=1;}}
static void
preparemarks(size_t nn)
{
size_t oldsize;
short *oldpos;
oldsize = vmark_sz;
oldpos = vmark;
DYNALLOC1(short,vmark,vmark_sz,nn,"preparemarks");
if (vmark_sz != oldsize || vmark != oldpos) vmark_val = 32000;
}
/**************************************************************************/
static void
writedread(FILE *f, sparsegraph *sg, boolean digraph)
/* Write in dreadnaut format */
{
size_t *v;
int *d,*e,n,i,j,k;
SG_VDE(sg,v,d,e);
n = sg->nv;
if (digraph) fprintf(f,"n=%d $=0 dg\n",n);
else fprintf(f,"n=%d $=0 g\n",n);
for (i = 0; i < n; ++i)
{
for (j = 0; j < d[i]; ++j)
{
k = e[v[i]+j];
if (k >= i || digraph) fprintf(f," %d",k);
}
if (i == n-1) fprintf(f,".\n$$\n");
else fprintf(f,";\n");
}
}
/**************************************************************************/
static int binom[32][16]; /* Cached binomial coefficients */
static int
binomial(int n, int k)
/* Value of binomial(n,k), error if too big for int */
{
int i,nki,ans;
nauty_counter work;
if (k > n/2) k = n - k;
if (k < 0) return 0;
if (n < 32 && binom[n][k] > 0) return binom[n][k];
work = 1;
for (i = 1; i <= k; ++i)
{
nki = n-k+i;
work = (work/i) * nki + (work%i) * nki / i;
if ((int)work != work) { fprintf(stderr,"Overflow\n"); exit(1); }
}
ans = (int)work;
if (n < 32) binom[n][k] = ans;
return ans;
}
/**************************************************************************/
static void
unrank(int r, int k, int *a)
/* r-th k-set in colex order (r=0,1,...) */
{
int i,p;
for (i = k; i > 0; --i)
{
p = i - 1;
do ++p; while (binomial(p,i) <= r);
r -= binomial(p-1,i);
a[i-1] = p-1;
}
}
static int
rank(int k, int *a)
/* Rank of a[0..k-1] in colex order */
{
int i,r;
r = 0;
for (i = 0; i < k; ++i)
r += binomial(a[i],i+1);
return r;
}
/**************************************************************************/
static int
vnumber(long *dimen, int *index, int ndimen)
{
int i,v;
v = 0;
for (i = 0; i < ndimen; ++i)
v = v*dimen[i] + index[i];
return v;
}
/**************************************************************************/
static void
makepath(long n, boolean digraph, sparsegraph *sg)
{
int *d,*e,i;
size_t *v,k;
if (n < 1 || n > NAUTY_INFINITY-2)
gt_abort(">E genspecialg: bad argument for -p\n");
if (digraph) SG_ALLOC(*sg,n,n-1,"genspecialg");
else SG_ALLOC(*sg,n,2UL*n-2,"genspecialg");
SG_VDE(sg,v,d,e);
if (digraph || n == 1)
{
sg->nv = n;
sg->nde = n-1;
for (i = 0; i < n-1; ++i)
{
d[i] = 1;
v[i] = i;
e[i] = i+1;
}
d[n-1] = 0;
v[n-1] = 0;
}
else
{
sg->nv = n;
sg->nde = 2*n-2;
d[0] = 1;
v[0] = 0;
e[0] = 1;
for (i = 1, k = 1; i < n-1; ++i, k += 2)
{
d[i] = 2;
v[i] = k;
e[k] = i-1;
e[k+1] = i+1;
}
d[n-1] = 1;
v[n-1] = k;
e[k] = n-2;
}
}
/**************************************************************************/
static void
makecycle(long n, boolean digraph, sparsegraph *sg)
{
int *d,*e,i;
size_t *v;
if (!digraph && (n < 1 || n == 2 || n > NAUTY_INFINITY-2))
gt_abort(">E genspecialg: bad argument for -c\n");
if (digraph && (n < 1 || n > NAUTY_INFINITY-2))
gt_abort(">E genspecialg: bad argument for -zc\n");
if (digraph) SG_ALLOC(*sg,n,n,"genspecialg");
else SG_ALLOC(*sg,n,2UL*n,"genspecialg");
SG_VDE(sg,v,d,e);
if (digraph || n == 1)
{
sg->nv = n;
sg->nde = n;
for (i = 0; i < n-1; ++i)
{
d[i] = 1;
v[i] = i;
e[i] = i+1;
}
d[n-1] = 1;
v[n-1] = n-1;
e[n-1] = 0;
}
else
{
sg->nv = n;
sg->nde = 2UL*n;
d[0] = 2;
v[0] = 0;
e[0] = 1;
e[1] = n-1;
for (i = 1; i < n-1; ++i)
{
d[i] = 2;
v[i] = 2UL*i;
e[2UL*i] = i-1;
e[2UL*i+1] = i+1;
}
d[n-1] = 2;
v[n-1] = 2UL*n-2;
e[2UL*n-2] = 0;
e[2UL*n-1] = n-2;
}
}
/**************************************************************************/
static void
makeflowersnark(long k, boolean digraph, sparsegraph *sg)
/* Flower snark on 4*k vertices, no digraph variant
*
* The flower snark Jn can be constructed with the following process :
* Build n copies of the star graph on 4 vertices. Denote the
* central vertex of each star Ai and the outer vertices Bi, Ci and
* Di. This results in a disconnected graph on 4n vertices with 3n
* edges (Ai-Bi, Ai-Ci and Ai-Di for 1?i?n). Construct the n-cycle
* (B1... Bn). This adds n edges. Finally construct the 2n-cycle
* (C1... CnD1... Dn). This adds 2n edges. By construction, the
* Flower snark Jn is a cubic graph with 4n vertices and 6n edges.
*/
#define FSA(i) (4*(i))
#define FSB(i) (4*(i)+1)
#define FSC(i) (4*(i)+2)
#define FSD(i) (4*(i)+3)
{
int n,*d,*e,i,j;
size_t *v,nde;
if (k < 3 || k > (NAUTY_INFINITY-2)/4)
gt_abort(">E genspecialg: bad argument for -f\n");
n = 4*k;
nde = 12*(size_t)k;
SG_ALLOC(*sg,n,nde,"genspecialg");
SG_VDE(sg,v,d,e);
sg->nv = n;
sg->nde = nde;
for (i = 0; i < n; ++i)
{
d[i] = 0;
v[i] = 3*(size_t)i;
}
for (i = 0; i < k; ++i)
{
e[v[FSA(i)]+d[FSA(i)]++] = FSB(i);
e[v[FSB(i)]+d[FSB(i)]++] = FSA(i);
e[v[FSA(i)]+d[FSA(i)]++] = FSC(i);
e[v[FSC(i)]+d[FSC(i)]++] = FSA(i);
e[v[FSA(i)]+d[FSA(i)]++] = FSD(i);
e[v[FSD(i)]+d[FSD(i)]++] = FSA(i);
}
for (i = 0; i < k; ++i)
{
j = FSB((i+1)%k);
e[v[FSB(i)]+d[FSB(i)]++] = j;
e[v[j]+d[j]++] = FSB(i);
}
for (i = 0; i < k-1; ++i)
{
e[v[FSC(i)]+d[FSC(i)]++] = FSC(i+1);
e[v[FSC(i+1)]+d[FSC(i+1)]++] = FSC(i);
}
for (i = 0; i < k-1; ++i)
{
e[v[FSD(i)]+d[FSD(i)]++] = FSD(i+1);
e[v[FSD(i+1)]+d[FSD(i+1)]++] = FSD(i);
}
e[v[FSD(0)]+d[FSD(0)]++] = FSC(k-1);
e[v[FSC(k-1)]+d[FSC(k-1)]++] = FSD(0);
e[v[FSC(0)]+d[FSC(0)]++] = FSD(k-1);
e[v[FSD(k-1)]+d[FSD(k-1)]++] = FSC(0);
}
/**************************************************************************/
static void
makeJohnson(long n, long k, boolean digraph, sparsegraph *sg)
{
size_t *v;
int *d,*e,*ep,nv,deg,i,j,s,t,u;
DYNALLSTAT(int,a,a_sz);
DYNALLSTAT(int,b,b_sz);
if (k > n/2) k = n - k;
if (k < 0) gt_abort(">E genspecialg: bad parameters for -J\n");
nv = binomial(n,k);
if (nv > NAUTY_INFINITY-2) gt_abort(">E genspecialg: too big -J\n");
deg = k*(n-k);
SG_ALLOC(*sg,nv,nv*(size_t)deg,"genspecialg");
sg->nv = nv;
sg->nde = nv*(size_t)deg;
SG_VDE(sg,v,d,e);
DYNALLOC1(int,a,a_sz,k,"genspecialg");
DYNALLOC1(int,b,b_sz,k,"genspecialg");
preparemarks(n);
for (i = 0; i < nv; ++i)
{
v[i] = i*(size_t)deg;
d[i] = deg;
ep = e + v[i];
unrank(i,k,a);
//{int x;for(x=0;x<k;++x)printf(" %d",a[x]);printf("\n");}
RESETMARKS;
for (j = 0; j < k; ++j) MARK(a[j]);
for (j = 0; j < n; ++j)
if (ISNOTMARKED(j))
{
for (s = 0; s < k; ++s)
{
for (t = 0; t < k; ++t) b[t] = a[t];
u = s;
while (u > 0 && b[u-1] > j)
{
b[u] = b[u-1];
--u;
}
while (u < k-1 && b[u+1] < j)
{
b[u] = b[u+1];
++u;
}
b[u] = j;
//{int x;printf("-");for(x=0;x<k;++x)printf(" %d",b[x]);printf(" (%d)\n",rank(k,b));}
*(ep++) = rank(k,b);
}
}
}
}
/**************************************************************************/
static void
makecomplete(long n, boolean digraph, sparsegraph *sg)
{
int *d,*e,i,j;
size_t *v,k;
if (n < 1 || n > NAUTY_INFINITY-2)
gt_abort(">E genspecialg: bad argument for -k\n");
if (digraph) SG_ALLOC(*sg,n,n*(size_t)n,"genspecialg");
else SG_ALLOC(*sg,n,n*(size_t)(n-1),"genspecialg");
SG_VDE(sg,v,d,e);
if (digraph)
{
sg->nv = n;
sg->nde = n*(size_t)n;
for (i = 0, k = 0; i < n; ++i, k += n)
{
d[i] = n;
v[i] = k;
for (j = 0; j < n; ++j) e[k+j] = j;
}
}
else
{
sg->nv = n;
sg->nde = n*(size_t)(n-1);
for (i = 0, k = 0; i < n; ++i)
{
d[i] = n-1;
v[i] = k;
for (j = 0; j < n; ++j)
if (j != i) e[k++] = j;
}
}
}
/**************************************************************************/
static void
makeempty(long n, boolean digraph, sparsegraph *sg)
{
int *d,*e,i;
size_t *v;
if (n < 1 || n > NAUTY_INFINITY-2)
gt_abort(">E genspecialg: bad argument for -e\n");
if (digraph) SG_ALLOC(*sg,n,n,"genspecialg");
else SG_ALLOC(*sg,n,0,"genspecialg");
SG_VDE(sg,v,d,e);
if (digraph)
{
sg->nv = n;
sg->nde = n;
for (i = 0; i < n; ++i)
{
d[i] = 1;
v[i] = i;
e[i] = i;
}
}
else
{
sg->nv = n;
sg->nde = 0;
for (i = 0; i < n; ++i)
{
d[i] = 0;
v[i] = 0;
}
}
}
/**************************************************************************/
static void
makehypercube(long deg, boolean digraph, sparsegraph *sg)
{
int *d,*e,i,j;
size_t *v,k,nv;
if (deg < 0 || deg > 30)
gt_abort(">E genspecialg: bad argument for -q\n");
if (digraph)
gt_abort(">E genspecialg: -zq is not implemented\n");
nv = 1UL << deg;
SG_ALLOC(*sg,nv,deg*nv,"genspecialg");
SG_VDE(sg,v,d,e);
sg->nv = nv;
sg->nde = deg*nv;
for (i = 0, k = 0; i < nv; ++i, k += deg)
{
d[i] = deg;
v[i] = k;
for (j = 0; j < deg; ++j) e[k+j] = i ^ (1<<j);
}
}
/**************************************************************************/
static void
maketheta(long *len, int npaths, boolean digraph, sparsegraph *sg)
{
int i,j,k,n,ntemp,*d,*e;
size_t *v,ne,etemp;
boolean hasone;
hasone = FALSE;
n = 2;
ne = 0;
for (i = 0; i < npaths; ++i)
{
if (len[i] < 1)
gt_abort(">E genspecialg: -T paths must be at least length 1\n");
if (len[i] == 1)
{
if (hasone) gt_abort(
">E genspecialg: -T only one path of length 1 allowed\n");
hasone = TRUE;
}
ntemp = n;
n += len[i]-1;
if (n < ntemp)
gt_abort(">E genspecialg: -T too many vertices\n");
etemp = ne;
ne += len[i];
if (ne < etemp) gt_abort(">E genspecialg: -T too many edges\n");
}
if (n > NAUTY_INFINITY-2)
gt_abort(">E genspecialg: -T size is too big\n");
if (!digraph)
{
etemp = ne;
ne *= 2;
if (ne < etemp) gt_abort(">E genspecialg: -T too many edges\n");
}
SG_ALLOC(*sg,n,ne,"genspecialg");
SG_VDE(sg,v,d,e);
sg->nv = n;
sg->nde = ne;
v[0] = 0;
v[1] = npaths;
if (digraph)
{
v[2] = v[1];
for (i = 3; i < n; ++i) v[i] = v[i-1] + 1;
}
else
{
v[2] = v[1] + npaths;
for (i = 3; i < n; ++i) v[i] = v[i-1] + 2;
}
for (i = 0; i < n; ++i) d[i] = 0;
if (hasone)
{
e[v[0]+(d[0]++)] = 1;
if (!digraph) e[v[1]+(d[1]++)] = 0;
}
k = 2;
for (i = 0; i < npaths; ++i)
{
if (len[i] == 1) continue;
e[v[0]+(d[0]++)] = k;
if (!digraph) e[v[k]+(d[k]++)] = 0;
for (j = 0; j < len[i]-2; ++j)
{
e[v[k]+(d[k]++)] = k+1;
if (!digraph) e[v[k+1]+(d[k+1]++)] = k;
++k;
}
e[v[k]+(d[k]++)] = 1;
if (!digraph) e[v[1]+(d[1]++)] = k;
++k;
}
}
/**************************************************************************/
static void
makegrid(long *dim, int ndim, boolean digraph, sparsegraph *sg)
{
int *d,*e,i,j,deg,n,oldn;
size_t *v,k;
boolean closed[30];
int index[30];
n = 1;
deg = 0;
for (i = 0; i < ndim; ++i)
{
if (dim[i] >= -1 && dim[i] <= 1)
gt_abort(">E genspecialg: -G dimensions must be at least 2\n");
if (dim[i] == 2 && !digraph)
gt_abort(">E genspecialg: -G dimen 2 is only ok for digraphs\n");
closed[i] = (dim[i] > 0);
if (dim[i] < 0) dim[i] = -dim[i];
oldn = n;
n *= dim[i];
if (n < 0 || n / dim[i] != oldn)
gt_abort(">E genspecialg: -G size is too big\n");
if (digraph || dim[i] == 2) ++deg;
else deg += 2;
index[i] = 0;
}
if (n > NAUTY_INFINITY-2)
gt_abort(">E genspecialg: -G size is too big\n");
SG_ALLOC(*sg,n,deg*(size_t)n,"genspecialg");
SG_VDE(sg,v,d,e);
sg->nv = n;
sg->nde = deg*(size_t)n;
k = 0;
for (i = 0; i < n; ++i)
{
v[i] = k;
for (j = 0; j < ndim; ++j)
{
if (index[j] < dim[j]-1)
{
++index[j];
e[k++] = vnumber(dim,index,ndim);
--index[j];
}
if (!digraph && index[j] > 0)
{
--index[j];
e[k++] = vnumber(dim,index,ndim);
++index[j];
}
if (closed[j] && index[j] == dim[j]-1)
{
index[j] = 0;
e[k++] = vnumber(dim,index,ndim);
index[j] = dim[j]-1;
}
if (closed[j] && !digraph && index[j] == 0)
{
index[j] = dim[j]-1;
e[k++] = vnumber(dim,index,ndim);
index[j] = 0;
}
}
d[i] = k - v[i];
for (j = ndim; --j >= 0;)
{
if (index[j] != dim[j]-1)
{
++index[j];
break;
}
else
index[j] = 0;
}
}
}
/**************************************************************************/
static void
makecirculant(long n, long *conn, int nconn, boolean digraph, sparsegraph *sg)
{
int *d,*e,i,j,deg;
size_t *v,k;
if (nconn > 0 && conn[0] <= 0)
gt_abort(">E genspecialg: -C connections must be nonzero\n");
for (i = 1; i < nconn; ++i)
if (conn[i] <= conn[i-1])
gt_abort(">E genspecialg: -C connections must be increasing\n");
if (nconn == 0)
deg = 0;
else
{
if (digraph)
{
if (conn[nconn-1] >= n) gt_abort(
">E genspecialg: -C connections must be 1..n-1\n");
deg = nconn;
}
else
{
if (conn[nconn-1] > n/2) gt_abort(
">E genspecialg: -C connections must be 1..n/2\n");
deg = 2*nconn - (2*conn[nconn-1]==n);
}
}
SG_ALLOC(*sg,n,deg*n,"genspecialg");
SG_VDE(sg,v,d,e);
sg->nv = n;
sg->nde = deg*n;
for (i = 0; i < n; ++i)
{
d[i] = deg;
v[i] = deg*(size_t)i;
}
for (i = 0; i < n; ++i)
{
k = v[i];
for (j = 0; j < nconn; ++j)
{
e[k++] = (i + conn[j]) % n;
if (!digraph && 2*conn[j] != n)
e[k++] = (i - conn[j] + n) % n;
}
}
}
/**************************************************************************/
static void
makegenpetersen(long n1, long n2, boolean digraph, sparsegraph *sg)
{
int *d,*e,i,n;
size_t *v,k;
if (digraph) gt_abort(">E no digraph version of -P is implemented\n");
n = 2*n1;
if (n < 1 || n1 > NAUTY_INFINITY/2-1 || n2 < 1 || 2*n2 >= n1)
gt_abort(">E -Pm,k needs m>0,0<k<m/2; or m too large\n");
SG_ALLOC(*sg,n,3UL*n,"genspecialg");
SG_VDE(sg,v,d,e);
sg->nv = n;
sg->nde = 3UL*n;
for (i = 0; i < n; ++i)
{
d[i] = 3;
v[i] = 3UL*i;
}
for (i = 0; i < n1; ++i)
{
k = v[i];
e[k] = (i + 1) % n1;
e[k+1] = (i + n1 - 1) % n1;
e[k+2] = i + n1;
}
for (i = 0; i < n1; ++i)
{
k = v[n1+i];
e[k] = n1 + (i + n2) % n1;
e[k+1] = n1 + (i - n2 + n1) % n1;
e[k+2] = i;
}
}
/**************************************************************************/
static void
makecompletebipartite(long n1, long n2,
long matching, boolean digraph, sparsegraph *sg)
{
int *d,*e,i,j,jmissing,n;
size_t *v,k;
n = n1 + n2;
if (matching > n1 || matching > n2)
gt_abort(">E genspecialg: matching too large\n");
if (n1 < 1 || n2 < 1 || n > NAUTY_INFINITY-2)
gt_abort(">E genspecialg: bad argument for -b\n");
if (digraph) SG_ALLOC(*sg,n,n1*n2,"genspecialg");
else SG_ALLOC(*sg,n,2*n1*n2,"genspecialg");
SG_VDE(sg,v,d,e);
if (digraph)
{
sg->nv = n;
sg->nde = n1*n2 - matching;
for (i = 0, k = 0; i < n1; ++i)
{
v[i] = k;
jmissing = (i < matching ? n1+i : -1);
for (j = n1; j < n; ++j) if (j != jmissing) e[k++] = j;
d[i] = k - v[i];
}
for (i = n1; i < n; ++i)
{
d[i] = 0;
v[i] = k;
}
}
else
{
sg->nv = n;
sg->nde = 2*(n1*n2 - matching);
for (i = 0, k = 0; i < n1; ++i)
{
v[i] = k;
jmissing = (i < matching ? n1+i : -1);
for (j = n1; j < n; ++j) if (j != jmissing) e[k++] = j;
d[i] = k - v[i];
}
for (i = n1; i < n; ++i)
{
v[i] = k;
jmissing = (i < n1+matching ? i-n1 : -1);
for (j = 0; j < n1; ++j) if (j != jmissing) e[k++] = j;
d[i] = k - v[i];
}
}
}
/**************************************************************************/
int
main(int argc, char *argv[])
{
int codetype;
int argnum,j;
char *arg,sw;
boolean badargs,quiet;
boolean Cswitch,Pswitch,gswitch,sswitch,zswitch,Jswitch,dswitch;
boolean pswitch,cswitch,eswitch,kswitch,bswitch,Qswitch,Gswitch;
boolean fswitch,Tswitch,verbose,havegraph,dreadnaut;
long size;
static FILE *outfile;
char *outfilename;
sparsegraph sg;
long Pargs[2],bargs[3],Jargs[2];
int nPargs,nbargs,nCargs,nGargs,nJargs,nTargs;
int numgraphs;
HELP; PUTVERSION;
numgraphs = 0;
gswitch = sswitch = zswitch = Pswitch = FALSE;
pswitch = cswitch = eswitch = kswitch = FALSE;
Gswitch = Cswitch = bswitch = Qswitch = verbose = FALSE;
dswitch = Jswitch = fswitch = Tswitch = quiet = FALSE;
outfilename = NULL;
argnum = 0;
badargs = FALSE;
for (j = 1; !badargs && j < argc; ++j)
{
arg = argv[j];
if (arg[0] == '-' && arg[1] != '\0')
{
++arg;
while (*arg != '\0')
{
sw = *arg++;
SWBOOLEAN('g',gswitch)
else SWBOOLEAN('s',sswitch)
else SWBOOLEAN('z',zswitch)
else SWBOOLEAN('d',dswitch)
else SWBOOLEAN('q',quiet)
else SWBOOLEAN('v',verbose)
else SWLONG('p',pswitch,size,"genspecialg -p")
else SWLONG('c',cswitch,size,"genspecialg -c")
else SWLONG('e',eswitch,size,"genspecialg -e")
else SWLONG('k',kswitch,size,"genspecialg -k")
else SWLONG('f',fswitch,size,"genspecialg -f")
else SWLONG('Q',Qswitch,size,"genspecialg -Q")
else SWSEQUENCEMIN('b',",",bswitch,bargs,2,3,nbargs,"genspecialg -b")
else SWSEQUENCEMIN('J',",",Jswitch,Jargs,2,2,nJargs,"genspecialg -J")
else SWSEQUENCEMIN('P',",",Pswitch,Pargs,2,2,nPargs,"genspecialg -P")
else SWSEQUENCEMIN('C',",",Cswitch,args,
1,MAXARGS,nCargs,"genspecialg -C")
else SWSEQUENCE('G',",",Gswitch,args,30,nGargs,"genspecialg -G")
else SWSEQUENCE('T',",",Tswitch,args,MAXARGS,
nTargs,"genspecialg -T")
else badargs = TRUE;
}
}
else
{
++argnum;
if (argnum == 1) outfilename = arg;
else badargs = TRUE;
}
}
if ((gswitch!=0) + (sswitch!=0) + (zswitch!=0) > 1)
gt_abort(">E genspecialg: -gsz are incompatible\n");
if ((gswitch!=0) + (sswitch!=0) + (dswitch!=0) > 1)
gt_abort(">E genspecialg: -gsd are incompatible\n");
if (badargs)
{
fprintf(stderr,">E Usage: %s\n",USAGE);
GETHELP;
exit(1);
}
if (gswitch) codetype = GRAPH6;
else if (zswitch) codetype = DIGRAPH6;
else codetype = SPARSE6;
dreadnaut = dswitch;
if (!outfilename || outfilename[0] == '-')
{
outfilename = "stdout";
outfile = stdout;
}
else if ((outfile = fopen(outfilename,"w")) == NULL)
{
fprintf(stderr,"Can't open output file %s\n",outfilename);
gt_abort(NULL);
}
SG_INIT(sg);
argnum = 0;
badargs = havegraph = FALSE;
for (j = 1; !badargs && j < argc; ++j)
{
arg = argv[j];
if (arg[0] == '-' && arg[1] != '\0')
{
++arg;
while (*arg != '\0')
{
sw = *arg++;
SWBOOLEAN('g',gswitch)
else SWBOOLEAN('s',sswitch)
else SWBOOLEAN('z',zswitch)
else SWBOOLEAN('d',dswitch)
else SWBOOLEAN('q',quiet)
else SWBOOLEAN('v',verbose)
else if (sw == 'p')
{
SWLONG('p',pswitch,size,"genspecialg -p")
makepath(size,zswitch,&sg);
havegraph = TRUE;
}
else if (sw == 'c')
{
SWLONG('c',cswitch,size,"genspecialg -c")
makecycle(size,zswitch,&sg);
havegraph = TRUE;
}
else if (sw == 'e')
{
SWLONG('e',eswitch,size,"genspecialg -e")
makeempty(size,zswitch,&sg);
havegraph = TRUE;