ASL *readASLfg (char **argv) {
// read .nl file from first argument //////////////////////////
char *stub;
// Create the ASL structure
ASL* asl = (ASL*) ASL_alloc (ASL_read_fg);
FILE *nl = NULL;
stub = getstub (&argv, &Oinfo);
// Although very intuitive, we shall explain why the second argument
// is passed with a minus sign: it is to tell the ASL to retrieve
// the nonlinear information too.
nl = jac0dim (stub, - (fint) strlen (stub));
// Set options in the asl structure
want_xpi0 = 1 | 2; // allocate initial values for primal and dual if available
obj_no = 0; // always want to work with the first (and only?) objective
// allocate space for initial values
X0 = new real [n_var];
havex0 = new char [n_var];
pi0 = new real [n_con];
havepi0 = new char [n_con];
// read the rest of the nl file
fg_read (nl, ASL_return_read_err | ASL_findgroups);
return asl;
}
int
jacdim_(const char *stub, fint *M, fint *N, fint *NO, fint *NZ,
fint *MXROW, fint *MXCOL, ftnlen stub_len)
{
ASL *asl;
if (cur_ASL)
return already_ASL("jacdim");
asl = ASL_alloc(ASL_read_fg);
return jac1dim_ASL(asl, stub, M, N, NO, NZ, MXROW, MXCOL, stub_len);
}
void
MAIN__(VOID)
{
fint N, liv, lv;
fint *iv;
real *D, *v;
int i;
char **av = xargv;
static fint L2 = 2;
ASL_alloc(ASL_read_f);
progname = *av++;
if (*av && !strcmp(*av,"-AMPL")) {
amplflag = 1;
av++;
}
if (n_con) {
fprintf(Stderr, "Ignoring %d constraints.\n", n_con);
fflush(Stderr);
}
N = n_var;
liv = 59 + N;
lv = 71 + N*(N + 21)/2;
v = (real *)Malloc((N + lv)*sizeof(real) + liv*sizeof(fint));
D = v + lv;
iv = (fint *)(D + N);
for(i = 0; i < N; i++)
D[i] = 1.;
divset_(&L2, iv, &liv, &lv, v); /* set default iv and v values */
iv[mxfcal] = iv[mxiter] = 1200; /* increase defaults */
if (amplflag) {
/* Turn off printing (unless requested in $mng_options). */
iv[outlev] = 0;
/* iv[solprt] = 0; */
iv[statpr] = 0;
iv[x0prt] = 0;
}
/* call vivvals to process command-line arguments */
vivvals("mngnlc", "mng_options", av, iv, v);
Nprob = nprob;
if (nprob >= 0 && nprob < n_obj && objtype[nprob]) {
maximize = 1;
objsign = -1.;
}
dmngb_(&N, D, X0, LUv, (U_fp)calcf, (U_fp)calcg, iv, &liv, &lv, v,
iv, v, (U_fp)calcf);
}
void *jampl_init(char *stub) {
ASL_pfgh *asl = (ASL_pfgh*)ASL_alloc(ASL_read_pfgh);
if (!asl) return NULL;
FILE *ampl_file = jac0dim(stub, (fint)strlen(stub));
// Allocate room to store problem data
if (! (asl->i.X0_ = (real *)M1alloc(asl->i.n_var_ * sizeof(real)))) return NULL;
if (! (asl->i.LUv_ = (real *)M1alloc(asl->i.n_var_ * sizeof(real)))) return NULL;
if (! (asl->i.Uvx_ = (real *)M1alloc(asl->i.n_var_ * sizeof(real)))) return NULL;
if (! (asl->i.pi0_ = (real *)M1alloc(asl->i.n_con_ * sizeof(real)))) return NULL;
if (! (asl->i.LUrhs_ = (real *)M1alloc(asl->i.n_con_ * sizeof(real)))) return NULL;
if (! (asl->i.Urhsx_ = (real* )M1alloc(asl->i.n_con_ * sizeof(real)))) return NULL;
// Read in ASL structure
asl->i.want_xpi0_ = 3; // Read primal and dual estimates
pfgh_read(ampl_file , 0); // pfgh_read closes the file.
return (void *)asl;
}
void
MAIN__(void)
{
FILE *nl;
fint *iv, liv, lv;
fint N, NZ, P;
real *rhsLU, *v;
int i, j;
extern int xargc;
extern char **xargv;
char *stub;
static fint L1 = 1;
static char *rvmsg[9] = {
"X-Convergence", /* 3 */
"Relative Function Convergence",
"X- and Relative Function Convergence",
"Absolute Function Convergence",
"Singular Convergence",
"False Convergence",
"Function Evaluation Limit",
"Iteration Limit",
"Unexpected return code"
};
char buf[256];
if (xargc < 2) {
fprintf(Stderr, "usage: %s stub\n", xargv[0]);
exit(1);
}
stub = xargv[1];
ASL_alloc(ASL_read_fg);
amplflag = xargc >= 3 && !strncmp(xargv[2], "-AMPL", 5);
nl = jac0dim(stub, (fint)strlen(stub));
if (n_obj) {
fprintf(Stderr, "Ignoring %d objectives.\n", n_obj);
fflush(Stderr);
}
N = n_con;
P = n_var;
NZ = nzc;
liv = 82 + 4*P;
lv = 105 + P*(N + 2*P + 21) + 2*N;
v = (real *)Malloc((lv + P)*sizeof(real) + liv*sizeof(fint));
X0 = v + lv;
iv = (fint *)(X0 + P);
fg_read(nl,0);
/* Check for valid problem: all equality constraints. */
for(i = j = 0, rhsLU = LUrhs; i++ < N; rhsLU += 2)
if (rhsLU[0] != rhsLU[1]) {
if (j++ > 4) {
/* Stop chattering if > 4 errors. */
fprintf(Stderr, "...\n");
exit(2);
}
fprintf(Stderr, "Lrhs(%d) = %g < Urhs(%d) = %g\n",
i, rhsLU[0], i, rhsLU[1]);
}
if (j)
exit(2);
dense_j(); /* Tell jacval_ we want a dense Jacobian. */
divset_(&L1, iv, &liv, &lv, v); /* set default iv and v values */
if (amplflag)
iv[prunit] = 0; /* Turn off printing . */
dn2gb_(&N, &P, X0, LUv, (U_fp)calcr, (U_fp)calcj,
iv, &liv, &lv, v, &NZ, LUrhs, (U_fp)calcr);
j = iv[0] >= 3 && iv[0] <= 10 ? (int)iv[0] - 3 : 8;
i = Sprintf(buf, "nl21: %s", rvmsg[j]);
if (j == 8)
i += Sprintf(buf+i, " %ld", iv[0]);
i += Sprintf(buf+i,
"\n%ld function, %ld gradient evaluations",
iv[nfcall], iv[ngcall]);
i += Sprintf(buf+i, "\nFinal sum of squares = ");
g_fmtop(buf+i, 2*v[f]);
write_sol(buf, X0, 0, 0);
}
void
mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
ASL_pfgh *asl = (ASL_pfgh*)cur_ASL;
FILE *nl;
Jmp_buf err_jmp0;
cgrad *cg, **cgp;
char *buf1, buf[512], *what, **whatp;
fint *hcs, *hr, i, nerror;
int *cs;
mwIndex *Ir, *Jc;
real *H, *He, *J1, *W, *c, *f, *g, *v, *t, *x;
static fint n, nc, nhnz, nz;
static real *Hsp;
static char ignore_complementarity[] =
"Warning: ignoring %d complementarity conditions.\n";
if (nrhs == 1 && mxIsChar(prhs[0])) {
if (nlhs < 6 || nlhs > 7)
usage();
if (mxGetString(prhs[0], buf1 = buf, sizeof(buf)))
mexErrMsgTxt("Expected 'stub' as argument\n");
at_end();
mexAtExit(at_end);
asl = (ASL_pfgh*)ASL_alloc(ASL_read_pfgh);
return_nofile = 1;
if (!(nl = jac0dim(buf1,strlen(buf)))) {
sprintf(msgbuf, "Can't open %.*s\n",
sizeof(msgbuf)-20, buf);
mexErrMsgTxt(msgbuf);
}
if (n_obj <= 0)
printf("Warning: objectve == 0\n");
n = n_var;
nc = n_con;
nz = nzc;
X0 = mxGetPr(plhs[0] = mxCreateDoubleMatrix(n, 1, mxREAL));
LUv = mxGetPr(plhs[1] = mxCreateDoubleMatrix(n, 1, mxREAL));
Uvx = mxGetPr(plhs[2] = mxCreateDoubleMatrix(n, 1, mxREAL));
pi0 = mxGetPr(plhs[3] = mxCreateDoubleMatrix(nc, 1, mxREAL));
LUrhs = mxGetPr(plhs[4] = mxCreateDoubleMatrix(nc, 1, mxREAL));
Urhsx = mxGetPr(plhs[5] = mxCreateDoubleMatrix(nc, 1, mxREAL));
if (nlhs == 7) {
cvar = (int*)M1alloc(nc*sizeof(int));
plhs[6] = mxCreateDoubleMatrix(nc, 1, mxREAL);
x = mxGetPr(plhs[6]);
}
else if (n_cc)
printf(ignore_complementarity, n_cc);
pfgh_read(nl, ASL_findgroups);
if (nlhs == 7)
for(i = 0; i < nc; i++)
x[i] = cvar[i];
/* Arrange to compute the whole sparese Hessian */
/* of the Lagrangian function (both triangles). */
nhnz = sphsetup(0, 0, nc > 0, 0);
Hsp = (real *)M1alloc(nhnz*sizeof(real));
return;
}
if (!asl)
mexErrMsgTxt("spamfunc(\"stub\") has not been called\n");
nerror = -1;
err_jmp1 = &err_jmp0;
what = "(?)";
whatp = &what;
if (nlhs == 2) {
if (nrhs != 2)
usage();
x = sizechk(prhs[0],"x",n);
t = sizechk(prhs[1],"0 or 1", 1);
if (setjmp(err_jmp0.jb)) {
sprintf(msgbuf, "Trouble evaluating %s\n", *whatp);
mexErrMsgTxt(msgbuf);
}
if (t[0] == 0.) {
f = mxGetPr(plhs[0] = mxCreateDoubleMatrix(1, 1, mxREAL));
c = mxGetPr(plhs[1] = mxCreateDoubleMatrix(nc, 1, mxREAL));
what = "f";
*f = n_obj > 0 ? objval(0, x, &nerror) : 0;
what = "c";
conval(x, c, &nerror);
return;
}
g = mxGetPr(plhs[0] = mxCreateDoubleMatrix(n, 1, mxREAL));
J1 = mxGetPr(plhs[1] = mxCreateSparse(nc, n, nz, mxREAL));
what = "g";
if (n_obj > 0)
objgrd(0, x, g, &nerror);
else
memset(g, 0, n*sizeof(real));
if (nc) {
what = "J";
jacval(x, J1, &nerror);
Ir = mxGetIr(plhs[1]);
/*memcpy(mxGetJc(plhs[1]), A_colstarts, (n+1)*sizeof(int));*/
for(Jc = mxGetJc(plhs[1]), cs = A_colstarts, i = 0; i <= n; ++i)
Jc[i] = cs[i];
cgp = Cgrad;
for(i = 0; i < nc; i++)
for(cg = *cgp++; cg; cg = cg->next)
Ir[cg->goff] = i;
}
return;
}
if (nlhs == 0 && (nrhs == 3 || nrhs == 4)) {
/* eval2('solution message', x, v): x = primal, v = dual */
/* optional 4th arg = solve_result_num */
if (!mxIsChar(prhs[0]))
usage();
x = sizechk(prhs[1],"x",n);
v = sizechk(prhs[2],"v",nc);
if (mxGetString(prhs[0], buf, sizeof(buf)))
mexErrMsgTxt(
"Expected 'solution message' as first argument\n");
solve_result_num = nrhs == 3 ? -1 /* unknown */
: (int)*sizechk(prhs[3],"solve_result_num",1);
write_sol(buf, x, v, 0);
return;
}
if (nlhs != 1 || nrhs != 1)
usage();
v = sizechk(prhs[0],"v",nc);
W = mxGetPr(plhs[0] = mxCreateSparse(n, n, nhnz, mxREAL));
what = "W";
sphes(H = Hsp, 0, 0, v);
/* Expand the Hessian lower triangle into the full Hessian... */
Ir = mxGetIr(plhs[0]);
Jc = mxGetJc(plhs[0]);
hcs = sputinfo->hcolstarts;
hr = sputinfo->hrownos;
for(i = 0; i <= n; i++)
Jc[i] = hcs[i];
He = H + hcs[n];
while(H < He) {
*W++ = *H++;
*Ir++ = *hr++;
}
}
int main ( int argc, char **argv ) {
FILE * nl;
char * stub;
FILE * point_file;
char * point_file_name;
int point_file_name_size;
fint nerror = (fint)0;
int n_badvals = 0;
int n_con_tmp = 0;
int i;
real f;
real * R;
if( argc < 2 ) {
fprintf ( stderr , "Usage: %s x.txt\n" , argv[0] );
return 1;
}
// get the point file name:
point_file_name_size = strlen(argv[1]) + 1;
point_file_name = (char*)Malloc(point_file_name_size * sizeof(char));
strcpy ( point_file_name , argv[1] );
strcpy ( argv[1] , MODEL_NAME );
// Read objectives and first derivative information.
if( !(asl = ASL_alloc(ASL_read_fg)) ) exit(1);
stub = getstub(&argv, &Oinfo);
nl = jac0dim(stub, (fint)strlen(stub));
// Get command-line options.
if (getopts(argv, &Oinfo)) exit(1);
// Check command-line options.
if( showgrad < 0 || showgrad > 1 ) {
Printf("Invalid value for showgrad: %d\n", showgrad);
n_badvals++;
}
if( showname < 0 || showname > 1 ) {
Printf("Invalid value for showgrad: %d\n", showgrad);
n_badvals++;
}
if(n_badvals) {
Printf("Found %d errors in command-line options.\n", n_badvals);
exit(1);
}
// Allocate memory for problem data.
// The variables below must have precisely THESE names.
X0 = (real*)Malloc(n_var * sizeof(real)); // Initial guess
pi0 = (real*)Malloc(n_con * sizeof(real)); // Initial multipliers
LUv = (real*)Malloc(n_var * sizeof(real)); // Lower bounds on variables
Uvx = (real*)Malloc(n_var * sizeof(real)); // Upper bounds on variables
LUrhs = (real*)Malloc(n_con * sizeof(real)); // Lower bounds on constraints
Urhsx = (real*)Malloc(n_con * sizeof(real)); // Upper bounds on constraints
R = (real*)Malloc(n_con * sizeof(real)); // constraints
want_xpi0 = 3;
// Read in ASL structure - trap read errors
if( fg_read(nl, 0) ) {
fprintf(stderr, "Error fg-reading nl file\n");
goto bailout;
}
#ifdef DISPLAY
n_con_tmp = 0;
for ( i = 0 ; i < n_con ; ++i ) {
if ( LUrhs[i] > -Infinity )
++n_con_tmp;
if ( Urhsx[i] < Infinity )
++n_con_tmp;
}
printf ( "n_obj=%i\nn_var=%i\nn_con=%i\nx0=[" , n_obj , n_var , n_con_tmp );
for ( i = 0 ; i < n_var ; ++i )
printf ( "%g " , X0[i] );
printf ( "]\n" );
#endif
// read x:
if ((point_file = fopen(point_file_name,"r")) == NULL) {
fprintf(stderr, "Cannot open file %s.\n",point_file_name);
goto bailout;
}
for ( i = 0 ; i < n_var ; ++i )
fscanf ( point_file , "%lf" , &X0[i] );
fclose(point_file);
free ( point_file_name );
#ifdef DISPLAY
printf ( "x =[" );
for ( i = 0 ; i < n_var ; ++i )
printf ( "%g " , X0[i] );
printf ( "]\n" );
#endif
// objective functions:
for ( i = 0 ; i < n_obj ; ++i ) {
f = objval ( i , X0 , &nerror );
if ( nerror ) {
fprintf(stderr, "Error while evaluating objective.\n");
goto bailout;
}
#ifdef DISPLAY
Printf("f%i(x) = %21.15e\n", i , f );
#else
Printf("%21.15e\n", f );
#endif
}
// constraints:
conval ( X0 , R , &nerror );
for ( i = 0 ; i < n_con ; ++i ) {
#ifdef DISPLAY
printf ("%g <= %g <= %g\n" , LUrhs[i] , R[i] , Urhsx[i] );
#else
if ( LUrhs[i] > -Infinity )
Printf("%21.15e\n", LUrhs[i]-R[i] );
if ( Urhsx[i] < Infinity )
Printf("%21.15e\n", R[i]-Urhsx[i] );
#endif
}
bailout:
// Free data structure. DO NOT use free() on X0, pi0, etc.
ASL_free((ASL**)(&asl));
return 0;
}
main(int argc, char **argv)
#endif
{
char *stub;
ASL *asl;
FILE *nl;
lprec *lp;
ograd *og;
int ct, i, intmin, *is, j, j0, j1, k, nalt, rc;
short *basis, *lower;
real *LU, *c, lb, objadj, *rshift, *shift, t, ub, *x, *x0, *x1;
char buf[256];
typedef struct { char *msg; int code; } Sol_info;
static Sol_info solinfo[] = {
{ "optimal", 0 },
{ "integer programming failure", 502 },
{ "infeasible", 200 },
{ "unbounded", 300 },
{ "failure", 501 },
{ "bug", 500 }
};
sprintf(lp_solve_version+9, "%.*s", (int)sizeof(lp_solve_version)-10,
PATCHLEVEL);
sprintf(lp_solve_vversion, "%s, driver(20001002)", lp_solve_version);
asl = ASL_alloc(ASL_read_f);
stub = getstub(&argv, &Oinfo);
nl = jac0dim(stub, (fint)strlen(stub));
suf_declare(suftab, sizeof(suftab)/sizeof(SufDecl));
/* set A_vals to get the constraints column-wise */
A_vals = (real *)M1alloc(nzc*sizeof(real));
f_read(nl,0);
lp = make_lp(n_con, 0);
Oinfo.uinfo = (char *)lp;
if (getopts(argv, &Oinfo))
return 1;
i = n_var + n_con + 1;
x = (real*)M1alloc(i*sizeof(real)); /* scratch vector */
memset(x, 0, i*sizeof(real));
x0 = x++;
c = x + n_con;
/* supply objective */
objadj = 0;
if (--nobj >= 0 && nobj < n_obj) {
for(og = Ograd[nobj]; og; og = og->next)
c[og->varno] = og->coef;
if (objtype[nobj])
set_maxim(lp);
objadj = objconst(nobj);
}
/* supply columns and variable bounds */
LU = LUv;
intmin = n_var - (nbv + niv);
j1 = nalt = 0;
rshift = shift = 0;
for(i = 1; i <= n_var; i++, LU += 2) {
lb = LU[0];
ub = LU[1];
j0 = j1;
j1 = A_colstarts[i];
*x0 = *c++; /* cost coefficient */
if (lb <= negInfinity && ub < Infinity) {
/* negate this variable */
nalt++;
lb = -ub;
ub = -LU[0];
for(j = j0; j < j1; j++)
x[A_rownos[j]] = -A_vals[j];
*x0 = -*x0;
add_column(lp, x0);
if (lb)
goto shift_check;
}
else {
for(j = j0; j < j1; j++)
x[A_rownos[j]] = A_vals[j];
add_column(lp, x0);
if (lb <= negInfinity) {
nalt++;
if (i > intmin)
set_int(lp, lp->columns, TRUE);
/* split free variable */
*x0 = -*x0;
for(j = j0; j < j1; j++)
x[A_rownos[j]] *= -1.;
add_column(lp,x0);
}
else if (lb) {
shift_check:
if (lb > 0)
set_lowbo(lp, lp->columns, lb);
else {
if (!rshift) {
rshift = (real*)M1zapalloc(
(n_var+n_con)*sizeof(real));
shift = rshift + n_con - 1;
}
shift[i] = lb;
for(j = j0; j < j1; j++) {
k = A_rownos[j];
rshift[k] += lb*x[k];
}
if (ub < Infinity)
ub -= lb;
objadj += lb**x0;
}
}
if (ub < Infinity)
set_upbo(lp, lp->columns, ub);
}
for(j = j0; j < j1; j++)
x[A_rownos[j]] = 0;
if (i > intmin)
set_int(lp, lp->columns, TRUE);
}
if (objadj) {
/* add a fixed variable to adjust the objective value */
*x0 = objadj;
add_column(lp, x0);
set_lowbo(lp, i, 1.);
set_upbo(lp, i, 1.);
}
/* supply constraint rhs */
LU = LUrhs;
for(i = 1; i <= n_con; i++, LU += 2) {
t = LU[0];
if (t == LU[1])
ct = EQ;
else if (t <= negInfinity) {
t = LU[1];
if (t >= Infinity) {
/* This is possible only with effort: */
/* one must turn presolve off and */
/* explicitly specify a constraint */
/* with infinite bounds. */
fprintf(Stderr,
"Sorry, can't handle free rows.\n");
exit(1);
}
ct = LE;
}
else
ct = GE;
set_constr_type(lp, i, ct);
set_rh(lp, i, rshift ? t - *rshift++ : t);
if (ct == GE && LU[1] < Infinity)
lp->orig_upbo[i] = LU[1] - t;
}
if (prlp)
print_lp(lp);
if (scaling)
auto_scale(lp);
/* Unfortunately, there seems to be no way to suggest */
/* a starting basis to lp_solve; thus we must ignore */
/* any incoming .sstatus values. */
rc = solve(lp);
if (rc < 0 || rc > 5)
rc = 5;
solve_result_num = solinfo[rc].code;
i = sprintf(buf, "%s: %s", Oinfo.bsname, solinfo[rc].msg);
if (rc == OPTIMAL)
i += sprintf(buf+i, ", objective %.*g", obj_prec(),
lp->best_solution[0]);
i += sprintf(buf+i,"\n%d simplex iterations", lp->total_iter);
if (lp->max_level > 1 || lp->total_nodes > 1)
sprintf(buf+i, "\n%d branch & bound nodes: depth %d",
lp->total_nodes, lp->max_level);
/* Prepare to report solution: deal with split free variables. */
x1 = lp->best_solution+lp->rows+1;
if (nalt || shift) {
x = x0;
LU = LUv;
for(i = 0; i < n_var; i++, LU += 2) {
if (LU[0] > negInfinity)
x[i] = *x1++;
else if (LU[1] < Infinity)
x[i] = -*x1++;
else {
x[i] = x1[0] - x1[1];
x1 += 2;
}
if (shift)
x[i] += *++shift;
}
}
else
x = x1;
if (solinfo[rc].code < 500 && !(nbv + niv)) {
/* return .sstatus values */
basis = lp->basis;
lower = lp->lower;
is = M1alloc((n_var + n_con)*sizeof(int));
suf_iput("sstatus", ASL_Sufkind_con, is);
for(i = 0; i < n_con; i++) {
j = *++lower;
*is++ = *++basis ? 1 : j ? 3 : 4;
}
suf_iput("sstatus", ASL_Sufkind_var, is);
LU = LUv;
for(i = 0; i < n_var; i++, LU += 2) {
j0 = *++basis;
j1 = *++lower;
if (LU[0] > negInfinity)
j = j0 ? 1 : j1 ? 3 : 4;
else if (LU[1] < Infinity)
j = j0 ? 1 : j1 ? 4 : 3;
else {
++lower;
j = *++basis || j0;
}
*is++ = j;
}
}
write_sol(buf, x, lp->duals+1, &Oinfo);
/* The following calls would only be needed */
/* if execution were to continue... */
delete_lp(lp);
ASL_free(&asl);
return 0;
}
int main(int argc, char **argv) {
FILE *nl;
char *stub;
fint nerror = (fint)0;
int n_badvals = 0;
real f;
if( argc < 2 ) {
fprintf(stderr, "Usage: %s stub\n", argv[0]);
return 1;
}
// Read objectives and first derivative information.
if( !(asl = ASL_alloc(ASL_read_fg)) ) exit(1);
stub = getstub(&argv, &Oinfo);
nl = jac0dim(stub, (fint)strlen(stub));
// Get command-line options.
if (getopts(argv, &Oinfo)) exit(1);
// Check command-line options.
if( showgrad < 0 || showgrad > 1 ) {
Printf("Invalid value for showgrad: %d\n", showgrad);
n_badvals++;
}
if( showname < 0 || showname > 1 ) {
Printf("Invalid value for showname: %d\n", showname);
n_badvals++;
}
if(n_badvals) {
Printf("Found %d errors in command-line options.\n", n_badvals);
exit(1);
}
// Allocate memory for problem data.
// The variables below must have precisely THESE names.
X0 = (real*)Malloc(n_var * sizeof(real)); // Initial guess
pi0 = (real*)Malloc(n_con * sizeof(real)); // Initial multipliers
LUv = (real*)Malloc(n_var * sizeof(real)); // Lower bounds on variables
Uvx = (real*)Malloc(n_var * sizeof(real)); // Upper bounds on variables
LUrhs = (real*)Malloc(n_con * sizeof(real)); // Lower bounds on constraints
Urhsx = (real*)Malloc(n_con * sizeof(real)); // Upper bounds on constraints
want_xpi0 = 3;
// Read in ASL structure - trap read errors
if( fg_read(nl, 0) ) {
fprintf(stderr, "Error fg-reading nl file\n");
goto bailout;
}
if(showname) { // Display objective name if requested.
Printf("Objective name: %s\n", obj_name(0));
}
// This "solver" outputs the objective function value at X0.
f = objval(0, X0, &nerror);
if(nerror) {
fprintf(stderr, "Error while evaluating objective.\n");
goto bailout;
}
Printf("f(x0) = %21.15e\n", f);
// Optionally also output objective gradient at X0.
if(showgrad) {
real *g = (real*)malloc(n_var * sizeof(real));
objgrd(0, X0, g, &nerror);
Printf("g(x0) = [ ");
for(int i=0; i<n_var; i++) Printf("%8.1e ", g[i]);
Printf("]\n");
free(g);
}
// Write solution to file. Here we just write the initial guess.
Oinfo.wantsol = 9; // Suppress message echo. Force .sol writing
write_sol(CHR"And the winner is", X0, pi0, &Oinfo);
bailout:
// Free data structure. DO NOT use free() on X0, pi0, etc.
ASL_free((ASL**)(&asl));
return 0;
}
int main(int argc, char **argv)
{
FILE *nl;
char *stub;
ASL *asl;
fint nerror = 0;
real *X;
real objVal;
int i, j, k, je;
real* J;
cgrad *cg;
char *fmt;
if (argc < 2) {
printf("Usage: %s stub\n", argv[0]);
return 1;
}
double t0 = clock_now();
asl = ASL_alloc(ASL_read_fg);
stub = argv[1];
nl = jac0dim(stub, (fint)strlen(stub));
fg_read(nl,0);
J = (real *)Malloc(nzc*sizeof(real));
X = (real *)Malloc(n_var*sizeof(real));
for (i = 0; i < n_var; i++) X[i] = 1.0;
// include one jacobian call for consistency
jacval(X, J, &nerror);
t0 = clock_now() - t0;
//objVal = objval(0, X, &nerror);
//printf("Objective %.5f\n", objVal);
double jactime = 1e30;
for (k = 0; k < 10; k++) {
double t1 = clock_now();
jacval(X, J, &nerror);
t1 = clock_now() - t1;
jactime = (t1 < jactime) ? t1 : jactime;
}
double norm = 0;
for (i = 0; i < nzc; i++) {
norm += J[i]*J[i];
}
norm = sqrt(norm);
char *bname = basename(argv[1]);
// Initialization time, 1 jacobian evaluation
printf("### %s %f %g\n",bname,t0,jactime);
printf("## %s Jacobian norm: %.10g (nnz = %d)\n",bname,norm,nzc);
/*printf("nzc %d\n",nzc);
for(i = 0; i < nzc; i++) {
printf("%d %g\n",i,J[i]);
}*/
/*
for(i = 0; i < n_con; i++) {
printf("\nRow %d:", i+1);
//fmt = " J[%d]=%g*X%d";
//for(cg = Cgrad[i]; cg; cg = cg->next, fmt = " + J[%d]=%g*X%d") {
// printf(fmt, cg->goff, J[cg->goff], cg->varno+1);
//}
fmt = " %g*X%d";
for(cg = Cgrad[i]; cg; cg = cg->next, fmt = " + %g*X%d") {
printf(fmt, J[cg->goff], cg->varno+1);
}
printf("\n");
}*/
return 0;
}
void
mexFunction(int nlhs, Matrix **plhs, int nrhs, Matrix **prhs)
{
FILE *nl;
char *buf1, buf[512], *what;
static fint n, nc, nz;
fint nerror;
real *J1, *W, *c, *f, *g, *v, *t, *x;
static real *J;
cgrad *cg, **cgp;
static size_t Jsize;
Jmp_buf err_jmp0;
ASL_pfgh *asl = (ASL_pfgh*)cur_ASL;
static fint nhnz;
static real *Hsp;
real *H, *He;
int *Ir, *Jc;
fint *hcs, *hr, i;
if (nrhs == 1 && mxIsString(prhs[0])) {
if (nlhs != 6)
usage();
if (mxGetString(prhs[0], buf1 = buf, sizeof(buf)))
mexErrMsgTxt("Expected 'stub' as argument\n");
at_end();
mexAtExit(at_end);
asl = (ASL_pfgh*)ASL_alloc(ASL_read_pfgh);
return_nofile = 1;
if (!(nl = jac0dim(buf1,strlen(buf)))) {
sprintf(msgbuf, "Can't open %.*s\n",
sizeof(msgbuf)-20, buf);
mexErrMsgTxt(msgbuf);
}
if (n_obj <= 0)
printf("Warning: objectve == 0\n");
n = n_var;
nc = n_con;
nz = nzc;
J = (real *)M1alloc(nz*sizeof(real));
X0 = mxGetPr(plhs[0] = mxCreateFull(n, 1, REAL));
LUv = mxGetPr(plhs[1] = mxCreateFull(n, 1, REAL));
Uvx = mxGetPr(plhs[2] = mxCreateFull(n, 1, REAL));
pi0 = mxGetPr(plhs[3] = mxCreateFull(nc, 1, REAL));
LUrhs = mxGetPr(plhs[4] = mxCreateFull(nc, 1, REAL));
Urhsx = mxGetPr(plhs[5] = mxCreateFull(nc, 1, REAL));
pfgh_read(nl, ASL_findgroups);
Jsize = nc*n*sizeof(real);
/* Arrange to compute the whole sparese Hessian */
/* of the Lagrangian function (both triangles). */
nhnz = sphsetup(0, 0, nc > 0, 0);
Hsp = (real *)M1alloc(nhnz*sizeof(real));
return;
}
if (!filename)
mexErrMsgTxt("spamfunc(\"stub\") has not been called\n");
nerror = -1;
err_jmp1 = &err_jmp0;
if (nlhs == 2) {
if (nrhs != 2)
usage();
x = sizechk(prhs[0],"x",n);
t = sizechk(prhs[1],"0 or 1", 1);
if (t[0] == 0.) {
f = mxGetPr(plhs[0] = mxCreateFull(1, 1, REAL));
c = mxGetPr(plhs[1] = mxCreateFull(nc, 1, REAL));
if (setjmp(err_jmp0.jb)) {
sprintf(msgbuf, "Trouble evaluating %s\n",
what);
mexErrMsgTxt(msgbuf);
}
what = "f";
*f = objval(0, x, &nerror);
what = "c";
conval(x, c, &nerror);
return;
}
g = mxGetPr(plhs[0] = mxCreateFull(n, 1, REAL));
J1 = mxGetPr(plhs[1] = mxCreateSparse(nc, n, nz, REAL));
what = "g";
objgrd(0, x, g, &nerror);
if (nc) {
what = "J";
jacval(x, J1, &nerror);
Ir = mxGetIr(plhs[1]);
memcpy(mxGetJc(plhs[1]), A_colstarts, (n+1)*sizeof(int));
cgp = Cgrad;
for(i = 0; i < nc; i++)
for(cg = *cgp++; cg; cg = cg->next)
Ir[cg->goff] = i;
}
return;
}
if (nlhs == 0 && nrhs == 3) {
/* eval2('solution message', x, v): x = primal, v = dual */
if (!mxIsString(prhs[0]))
usage();
x = sizechk(prhs[1],"x",n);
v = sizechk(prhs[2],"v",nc);
if (mxGetString(prhs[0], buf, sizeof(buf)))
mexErrMsgTxt(
"Expected 'solution message' as first argument\n");
write_sol(buf, x, v, 0);
return;
}
if (nlhs != 1 || nrhs != 1)
usage();
v = sizechk(prhs[0],"v",nc);
W = mxGetPr(plhs[0] = mxCreateSparse(n, n, nhnz, REAL));
what = "W";
sphes(H = Hsp, 0, 0, v);
/* Expand the Hessian lower triangle into the full Hessian... */
Ir = mxGetIr(plhs[0]);
Jc = mxGetJc(plhs[0]);
hcs = sputinfo->hcolstarts;
hr = sputinfo->hrownos;
for(i = 0; i <= n; i++)
Jc[i] = hcs[i];
He = H + hcs[n];
while(H < He) {
*W++ = *H++;
*Ir++ = *hr++;
}
}
cgrad *cg, *cg0;
ograd *og;
real *b, *c, t;
ASL *asl;
dw = clen = rlen = 0;
progname = *argv;
if (argc < 2) {
usage:
fprintf(Stderr, "Usage: [-wnnn] %s stub\n\
nnn = display width (overrides $display_width)\n", progname);
return 1;
}
asl = ASL_alloc(ASL_read_f);
stub = *++argv;
if (*stub == '-')
switch(stub[1]) {
case 'w':
if (stub[2])
stub += 2;
else if (--argc < 2)
goto usage;
else
stub = *++argv;
dw = atoi(stub);
if (--argc < 2)
goto usage;
stub = *++argv;
break;
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
//Possible Inputs
char fpath[FLEN];
char msg[FLEN];
char cmd[FLEN]; //user commmand
int sp = 0;
//Outputs
const char *fnames[15] = {"H","f","lb","ub","A","cl","cu","Q","l","qcind","x0","v0","sense","objbias","conlin"};
double *sizes;
//Internal Vars
int ii; size_t i,j,k; //indexing vars
char *what, **whatp; //error message vars
static FILE *nl; //file handle
ASL *asl = cur_ASL; //Current ASL instance
int icmd = ASLCMD_ERROR; //Command Integer
double *sense; //Objective sense
double *objbias; //Objective bias
int obj_lin; //linearity of the objectiuve (see ASL_DEGREE_ defines)
double *con_lin; //linearity of the constraints (see ASL_DEGREE_ defines)
double *isopen; //Is ASL open
bool nlcon = false; //indicates whether any constraint is nonlinear
double *x; //Evaluation point
double *f, *g, *c = NULL; //Return pointers
int nerror; //eval errors
//Sparse Indexing
mwIndex *Ir, *Jc;
double *Pr;
//QP Checking Vars
int nqpz = 0; //number of nzs in quadratic objective
int nqc_con = 0; //number of quadratic constraints
int *QP_ir, *QP_jc; //Pointers used when calling nqpcheck
double *QP_pr;
double *pqi; //pointer to quadratic index vector
ograd *og; //objective gradient structure
//Jacobian Vars
static double *J = NULL; //Memory to store intermediate Jacobian Values when using Dense Mode
static double *J1 = NULL; //Memory to store Jacobian Values
cgrad *cg, **cgp, **cgpe; //constraint gradient structures
int *cs; //Column starts
//Hessian Vars
static double *Hsp = NULL; //Memory to store Hessian Values
static int nhnz; //Number of Hessian nz
double *s, *v; //Sigma, Lambda
int *hcs, *hr; //Hessian column starts, row indexs
double *H, *He, *W;
//Error catching
Jmp_buf err_jmp0;
//If no inputs, just return info
if(nrhs < 1)
{
if (nlhs >= 1)
{
sprintf(msgbuf,"%s %s",__TIME__,__DATE__);
plhs[0] = mxCreateString(msgbuf);
plhs[1] = mxCreateDoubleScalar(OPTI_VER);
}
else
{
printUtilityInfo();
}
return;
}
//Get User Command
icmd = getCommand(prhs[0]);
//Switch Yard for Command
switch(icmd)
{
case ASLCMD_ISOPEN:
isopen = mxGetPr(plhs[0] = mxCreateDoubleMatrix(1, 1, mxREAL));
if(asl)
*isopen = 1;
else
*isopen = 0;
break;
case ASLCMD_OPEN:
//Check for Errors
if(nrhs < 2)
mexErrMsgTxt("Expected two arguments to open a file! [x0,v0,lb,ub,cl,cu,sense,sizes] = asl('open','file path')\n");
if(!mxIsChar(prhs[1]))
mexErrMsgTxt("File path must be a char array!");
//Get String
CHECK(mxGetString(prhs[1], fpath, FLEN) == 0,"error reading file path!");
//Clear any existing objects
if (cur_ASL)
ASL_free(&cur_ASL);
//Set MEX exit function
mexAtExit(mexExit);
//Open file for LP/QP/QCQP checking
asl = ASL_alloc(ASL_read_fg); //allocate for qp read
return_nofile = 1; //return 0 if stub doesn't exist
nl = jac0dim(fpath,(ftnlen)strlen(fpath)); //read in passed file
//Check we got the file
if(!nl) {
sprintf(msgbuf, "Can't open (or error opening) %s\n", fpath);
mexErrMsgTxt(msgbuf);
}
//Allocate Vector Memory
pPROB = mxCreateStructMatrix(1,1,15,fnames);
mxSetField(pPROB,0,fnames[eX0],mxCreateDoubleMatrix(n_var,1, mxREAL));
mxSetField(pPROB,0,fnames[eV0],mxCreateDoubleMatrix(n_con, 1, mxREAL));
mxSetField(pPROB,0,fnames[eLB],mxCreateDoubleMatrix(n_var, 1, mxREAL));
mxSetField(pPROB,0,fnames[eUB],mxCreateDoubleMatrix(n_var, 1, mxREAL));
mxSetField(pPROB,0,fnames[eCL],mxCreateDoubleMatrix(n_con, 1, mxREAL));
mxSetField(pPROB,0,fnames[eCU],mxCreateDoubleMatrix(n_con, 1, mxREAL));
mxSetField(pPROB,0,fnames[eSENSE],mxCreateDoubleMatrix(1, 1, mxREAL));
mxSetField(pPROB,0,fnames[eOBJBIAS],mxCreateDoubleMatrix(1, 1, mxREAL));
mxSetField(pPROB,0,fnames[eCONLIN],mxCreateDoubleMatrix(n_con, 1, mxREAL));
//Get Fields (ASL will fill)
X0 = mxGetPr(mxGetField(pPROB,0,fnames[eX0]));
pi0 = mxGetPr(mxGetField(pPROB,0,fnames[eV0]));
LUv = mxGetPr(mxGetField(pPROB,0,fnames[eLB]));
Uvx = mxGetPr(mxGetField(pPROB,0,fnames[eUB]));
LUrhs = mxGetPr(mxGetField(pPROB,0,fnames[eCL]));
Urhsx = mxGetPr(mxGetField(pPROB,0,fnames[eCU]));
sense = mxGetPr(mxGetField(pPROB,0,fnames[eSENSE]));
objbias = mxGetPr(mxGetField(pPROB,0,fnames[eOBJBIAS]));
con_lin = mxGetPr(mxGetField(pPROB,0,fnames[eCONLIN]));
//Other Output Args
sizes = mxGetPr(pSIZE = mxCreateDoubleMatrix(16, 1, mxREAL));
//Check for complementarity problems
if(n_cc)
mexWarnMsgTxt("Ignoring Complementarity Constraints!");
//Assign asl problem sizes
sizes[0] = (double)n_var; sizes[1] = (double)n_con; sizes[2] = (double)nzc;
sizes[3] = (double)lnc; sizes[4] = (double)nbv; sizes[5] = (double)niv;
sizes[6] = (double)nlc; sizes[7] = (double)nlnc; sizes[8] = (double)nlo;
sizes[9] = (double)nlvb; sizes[10] = (double)nlvc; sizes[11] = (double)nlvo;
sizes[12] = (double)nlvbi; sizes[13] = (double)nlvci; sizes[14] = (double)nlvoi;
sizes[15] = (double)nwv;
//Read In For QP Checking
qp_read(nl,0);
//Assign sense
if(objtype[0] == 1)
*sense = -1; //max
else
*sense = 1; //min
//Determine Objective Linearity
obj_lin = linCheck(asl, 0);
//Determine Constraints Linearity
for(ii = 0; ii < n_con; ii++) {
con_lin[ii] = linCheck(asl, -(ii+1));
//Check if nonlinear or quadratic
if(con_lin[ii] >= ASL_DEGREE_NLIN)
nlcon = true;
else if(con_lin[ii] == ASL_DEGREE_QUAD)
{
//con_lin indicates quadratic constraint, ensure is inequality
if(LUrhs[ii] != Urhsx[ii])
nqc_con++;
else
nlcon = true; //quadratic equalities not currently handled by any explicit QCQP solver (I know of), make nl
}
}
//Check to force to read as nonlinear problem
if(nrhs > 2 && *mxGetPr(prhs[2])==1)
nlcon = true;
//If objective or any constraint is nonlinear, then we have to process as an NLP
if(obj_lin == ASL_DEGREE_NLIN || nlcon) {
//Free the QP read memory
ASL_free(&asl);
//Re-open for full NLP read
asl = ASL_alloc(ASL_read_pfgh); //allocate memory for pfgh read
nl = jac0dim(fpath,(ftnlen)strlen(fpath)); //read passed file (full nl read)
//Allocate Jacobian Memory [note use M1alloc to let ASL clean it up if multiple instances opened]
J = (double*)M1alloc(nzc*sizeof(double)); //Memory to store Jacobian nzs
//Assign memory for saving obj + con x
objx = (double*)M1alloc(n_var*sizeof(double));
conx = (double*)M1alloc(n_var*sizeof(double));
//Read File (f + g + H)
pfgh_read(nl, ASL_findgroups);
//Assign Hessian Memory
nhnz = sphsetup(1, 1, n_con > 0, 0); //one obj, use sigma, optionally use lambda, full hessian
Hsp = (double*)M1alloc(nhnz*sizeof(double)); //memory to store hessian nzs
}
//Otherwise we can process as a LP, QP or QCQP
else {
//Assign objective bias
*objbias = objconst(0);
//Check for quadratic objective
if(obj_lin == ASL_DEGREE_QUAD) {
//Capture Pointers
nqpz = nqpcheck(0, &QP_ir, &QP_jc, &QP_pr); //check objective for qp
//Create QP H
mxSetField(pPROB,0,fnames[eH],mxCreateSparse(n_var,n_var,nqpz,mxREAL));
//Copy in Objective Quadratic Elements (copy-cast where appropriate)
memcpy(mxGetPr(mxGetField(pPROB,0,fnames[eH])),QP_pr,nqpz*sizeof(double));
Jc = mxGetJc(mxGetField(pPROB,0,fnames[eH]));
Ir = mxGetIr(mxGetField(pPROB,0,fnames[eH]));
for(i = 0; i <= n_var; i++)
Jc[i] = (mwIndex)QP_jc[i];
for(i = 0; i < nqpz; i++)
Ir[i] = (mwIndex)QP_ir[i];
}
else //create an empty sparse matrix
mxSetField(pPROB,0,fnames[eH],mxCreateSparse(n_var,n_var,0,mxREAL));
//Create QP f
mxSetField(pPROB,0,fnames[eF],mxCreateDoubleMatrix(n_var,1,mxREAL));
Pr = mxGetPr(mxGetField(pPROB,0,fnames[eF]));
//Copy in Objective Linear Elements
for( og = Ograd[0]; og; og = og->next )
Pr[og->varno] = og->coef;
//Create A (linear constraints)
mxSetField(pPROB,0,fnames[eA],mxCreateSparse(n_con, n_var, nzc, mxREAL));
if(n_con) {
Pr = mxGetPr(mxGetField(pPROB,0,fnames[eA]));
Ir = mxGetIr(mxGetField(pPROB,0,fnames[eA]));;
//Fill in A (will double on quadratic linear sections, but easier to remove once in MATLAB)
for(Jc = mxGetJc(mxGetField(pPROB,0,fnames[eA])), cs = A_colstarts, i = 0; i <= n_var; ++i)
Jc[i] = (mwIndex)cs[i];
cgp = Cgrad;
for(i = 0; i < n_con; i++)
for(cg = *cgp++; cg; cg = cg->next) {
Ir[cg->goff] = (mwIndex)i;
Pr[cg->goff] = cg->coef;
}
}
//Add quadratic constraints if present
if(nqc_con) {
//Allocate a Cell Array to store the quadratic constraint Qs, and vector to store indices
mxSetField(pPROB,0,fnames[eQ],mxCreateCellMatrix(nqc_con,1)); //Q
mxSetField(pPROB,0,fnames[eL],mxCreateDoubleMatrix(n_var, nqc_con,mxREAL)); //l
mxSetField(pPROB,0,fnames[eQCIND],mxCreateDoubleMatrix(nqc_con,1,mxREAL)); //ind
pqi = mxGetPr(mxGetField(pPROB,0,fnames[eQCIND]));
//Fill In Constraints
for(ii=0,j=0;ii<n_con;ii++) {
//Quadratic Constraints
if(con_lin[ii] == ASL_DEGREE_QUAD) {
//Create index
pqi[j] = ii+1; //increment for matlab index
//Capture Pointers
nqpz = nqpcheck(-(ii+1), &QP_ir, &QP_jc, &QP_pr); //check constraint for qp;
if(nqpz <= 0)
mexErrMsgTxt("Error reading quadratic constraints. Assumed constraint was quadratic based on prescan, now appears not?");
//Create QC Q
mxSetCell(mxGetField(pPROB,0,fnames[eQ]),j,mxCreateSparse(n_var,n_var,nqpz,mxREAL));
//Copy in Constraint Quadratic Elements (copy-cast where appropriate)
Pr = mxGetPr(mxGetCell(mxGetField(pPROB,0,fnames[eQ]),j));
Jc = mxGetJc(mxGetCell(mxGetField(pPROB,0,fnames[eQ]),j));
Ir = mxGetIr(mxGetCell(mxGetField(pPROB,0,fnames[eQ]),j));
for(k = 0; k <= n_var; k++)
Jc[k] = (mwIndex)QP_jc[k];
for(k = 0; k < nqpz; k++) {
Ir[k] = (mwIndex)QP_ir[k];
Pr[k] = 0.5*QP_pr[k]; //to QP form
}
//Create QC l (not sure why we can't extract this from Jacobian, values are wrong)
Pr = mxGetPr(mxGetField(pPROB,0,fnames[eL]));
for( cg = Cgrad[ii]; cg; cg = cg->next )
Pr[j*n_var + cg->varno] = cg->coef;
//Increment for next cell / col
j++;
}
}
}
//Put back into function eval mode (just in case)
qp_opify();
}
break;
case ASLCMD_CLOSE:
//Check for Errors
CHECKASL(asl);
//Call Exit Function
mexExit();
break;
case ASLCMD_FUN:
//Check for Errors
CHECKASL(asl);
CHECKNRHS(nrhs,2);
//Get x and check dimensions
x = sizechk(prhs[1],"x",n_var);
//Save x
if(objx) memcpy(objx,x,n_var*sizeof(double));
//Create objective val memory and get it from ASL
SETERRJMP(); what = "objective";
f = mxGetPr(plhs[0] = mxCreateDoubleMatrix(1, 1, mxREAL));
*f = objval(0, x, &nerror);
break;
case ASLCMD_GRAD:
//Check for Errors
CHECKASL(asl);
CHECKNRHS(nrhs,2);
//Get x and check dimensions
x = sizechk(prhs[1],"x",n_var);
//Save x
if(objx) memcpy(objx,x,n_var*sizeof(double));
//Create objective grad memory and get it from ASL
SETERRJMP(); what = "gradient";
g = mxGetPr(plhs[0] = mxCreateDoubleMatrix(1, n_var, mxREAL));
objgrd(0, x, g, &nerror);
break;
case ASLCMD_CON:
//Check for Errors
CHECKASL(asl);
CHECKNRHS(nrhs,2);
//Get x and check dimensions
x = sizechk(prhs[1],"x",n_var);
//Save x
if(conx) memcpy(conx,x,n_var*sizeof(double));
//Create constraint memory and get it from ASL
SETERRJMP(); what = "constraints";
c = mxGetPr(plhs[0] = mxCreateDoubleMatrix(n_con, 1, mxREAL));
if(n_con)
conval(x, c, &nerror);
break;
case ASLCMD_JAC:
//Check for Errors
CHECKASL(asl);
CHECKNRHS(nrhs,2);
//Get x and check dimensions
x = sizechk(prhs[1],"x",n_var);
//Save x
if(conx) memcpy(conx,x,n_var*sizeof(double));
//Create constraint jac memory and get it from ASL
SETERRJMP(); what = "Jacobian";
//Check for sparsity
if(nrhs > 2 && *mxGetPr(prhs[2])) {
sp = 1;
J1 = mxGetPr(plhs[0] = mxCreateSparse(n_con, n_var, nzc, mxREAL));
}
else {
sp = 0;
J1 = mxGetPr(plhs[0] = mxCreateDoubleMatrix(n_con, n_var, mxREAL));
}
//Evaluate if we have constraints
if (n_con) {
//Sparse
if(sp) {
jacval(x, J1, &nerror);
Ir = mxGetIr(plhs[0]);
for(Jc = mxGetJc(plhs[0]), cs = A_colstarts, i = 0; i <= n_var; ++i)
Jc[i] = (mwIndex)cs[i];
cgp = Cgrad;
for(i = 0; i < n_con; i++)
for(cg = *cgp++; cg; cg = cg->next)
Ir[cg->goff] = (mwIndex)i;
}
//Dense
else {
jacval(x, J, &nerror);
cgp = Cgrad;
for(cgpe = cgp + n_con; cgp < cgpe; J1++)
for(cg = *cgp++; cg; cg = cg->next)
J1[n_con*cg->varno] = J[cg->goff];
}
}
break;
case ASLCMD_JACSTR:
//Check for Errors
CHECKASL(asl);
CHECKNRHS(nrhs,1);
//Create constraint jacstr memory and get it from ASL
SETERRJMP(); what = "Jacobian Structure)";
J1 = mxGetPr(plhs[0] = mxCreateSparse(n_con, n_var, nzc, mxREAL));
//Fill In Structure
for(i=0;i<nzc;i++)
J1[i] = 1.0;
for(Jc = mxGetJc(plhs[0]), cs = A_colstarts, i = 0; i <= n_var; ++i)
Jc[i] = (mwIndex)cs[i];
cgp = Cgrad;
Ir = mxGetIr(plhs[0]);
for(i = 0; i < n_con; i++)
for(cg = *cgp++; cg; cg = cg->next)
Ir[cg->goff] = (mwIndex)i;
break;
case ASLCMD_HES:
//Check for Errors
CHECKASL(asl);
CHECKNRHS(nrhs,4); //assume hess(x,sigma,lambda) and optionally sparse
//Check dimensions & get args
x = sizechk(prhs[1],"x",n_var);
s = sizechk(prhs[2],"sigma",1);
v = sizechk(prhs[3],"lambda",n_con);
//Check for sparsity
if(nrhs > 4 && *mxGetPr(prhs[4])) {
sp = 1;
W = mxGetPr(plhs[0] = mxCreateSparse(n_var, n_var, nhnz, mxREAL));
}
else {
sp = 0;
W = mxGetPr(plhs[0] = mxCreateDoubleMatrix(n_var, n_var, mxREAL));
}
//Check if we need to recalculate objective / constraints
if(!comp_x(objx,x,n_var)) {
//Setup Error Catching
SETERRJMP(); what = "Objective for Hessian";
//Re-evaluate Objective
objval(0, x, &nerror);
}
if(!comp_x(conx,x,n_var)){
if(!c)
c = mxGetPr(mxCreateDoubleMatrix(n_con, 1, mxREAL));
//Setup Error Catching
SETERRJMP(); what = "Constraints for Hessian";
//Re-evaluate Constraints
conval(x, c, &nerror);
}
//Setup Error Catching
SETERRJMP(); what = "Hessian";
//Sparse
if(sp) {
//This function returns the full (symmetric) Hessian as setup above
sphes(H = Hsp, 1, s, v);
Ir = mxGetIr(plhs[0]);
Jc = mxGetJc(plhs[0]);
hcs = sputinfo->hcolstarts;
hr = sputinfo->hrownos;
for(i = 0; i <= n_var; i++)
Jc[i] = (mwIndex)hcs[i];
He = H + hcs[n_var];
while(H < He) {
*W++ = *H++;
*Ir++ = (mwIndex)*hr++;
}
}
//Dense
else
fullhes(W, n_var, 1, s, v);
break;
case ASLCMD_HESSTR:
//mexPrintf("CMD: Get Hessian Structure\n");
//Check for Errors
CHECKASL(asl);
CHECKNRHS(nrhs,1);
//Create hessianstr memory and get it from ASL
SETERRJMP(); what = "Hessian Structure";
W = mxGetPr(plhs[0] = mxCreateSparse(n_var, n_var, nhnz, mxREAL));
Ir = mxGetIr(plhs[0]);
Jc = mxGetJc(plhs[0]);
//Get Sparse Info
hcs = sputinfo->hcolstarts;
hr = sputinfo->hrownos;
//Assign col starts
for(i = 0; i <= n_var; i++)
Jc[i] = (mwIndex)hcs[i];
//Assign rows + 1.0 for nz positions
H = Hsp; //Start of nz Hsp elements
He = H + hcs[n_var]; //End of nz Hsp elements
while(H < He) {
*W++ = 1.0;
*Ir++ = (mwIndex)*hr++;
*H++; //increment nz element position
}
break;
case ASLCMD_WRITESOL:
//Check for Errors
CHECKASL(asl);
CHECKNRHS(nrhs,2); //asl('writesol',msg,x)
//Get Input Args
CHECK(mxGetString(prhs[1], msg, FLEN) == 0,"error reading message!");
x = sizechk(prhs[2],"x",n_var);
//Write to solution stub file
write_sol(msg,x,NULL,NULL);
break;
default:
mexExit(); //clean up
mxGetString(prhs[0], cmd, FLEN);
sprintf(msgbuf, "ASL Command Error! Unknown Command: '%s'\n", cmd);
mexErrMsgTxt(msgbuf);
break;
}
}
void
mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
FILE *nl;
char *buf1, buf[512], *what, **whatp;
static fint n, nc, nz;
fint i, nerror;
real *J1, *W, *c, *f, *g, *v, *t, *x;
static real *J;
cgrad *cg, **cgp, **cgpe;
static size_t Jsize;
Jmp_buf err_jmp0;
ASL *asl = cur_ASL;
static char ignore_complementarity[] =
"Warning: ignoring %d complementarity conditions.\n";
if (nrhs == 1 && mxIsChar(prhs[0])) {
if (nlhs < 6 || nlhs > 7)
usage();
if (mxGetString(prhs[0], buf1 = buf, sizeof(buf)))
mexErrMsgTxt("Expected 'stub' as argument\n");
at_end();
mexAtExit(at_end);
asl = ASL_alloc(ASL_read_pfgh);
return_nofile = 1;
if (!(nl = jac0dim(buf1,strlen(buf)))) {
sprintf(msgbuf, "Can't open %.*s\n",
sizeof(msgbuf)-20, buf);
mexErrMsgTxt(msgbuf);
}
if (n_obj <= 0)
printf("Warning: objectve == 0\n");
n = n_var;
nc = n_con;
nz = nzc;
J = (real *)M1alloc(nz*sizeof(real));
X0 = mxGetPr(plhs[0] = mxCreateDoubleMatrix(n, 1, mxREAL));
LUv = mxGetPr(plhs[1] = mxCreateDoubleMatrix(n, 1, mxREAL));
Uvx = mxGetPr(plhs[2] = mxCreateDoubleMatrix(n, 1, mxREAL));
pi0 = mxGetPr(plhs[3] = mxCreateDoubleMatrix(nc, 1, mxREAL));
LUrhs = mxGetPr(plhs[4] = mxCreateDoubleMatrix(nc, 1, mxREAL));
Urhsx = mxGetPr(plhs[5] = mxCreateDoubleMatrix(nc, 1, mxREAL));
if (nlhs == 7) {
cvar = (int*)M1alloc(nc*sizeof(int));
plhs[6] = mxCreateDoubleMatrix(nc, 1, mxREAL);
x = mxGetPr(plhs[6]);
}
else if (n_cc)
printf(ignore_complementarity, n_cc);
pfgh_read(nl, ASL_findgroups);
Jsize = nc*n*sizeof(real);
if (nlhs == 7)
for(i = 0; i < nc; i++)
x[i] = cvar[i];
return;
}
if (!asl)
mexErrMsgTxt("amplfunc(\"stub\") has not been called\n");
nerror = -1;
err_jmp1 = &err_jmp0;
what = "(?)";
whatp = &what;
if (nlhs == 2) {
if (nrhs != 2)
usage();
x = sizechk(prhs[0],"x",n);
t = sizechk(prhs[1],"0 or 1", 1);
if (setjmp(err_jmp0.jb)) {
sprintf(msgbuf, "Trouble evaluating %s\n", *whatp);
mexErrMsgTxt(msgbuf);
}
if (t[0] == 0.) {
f = mxGetPr(plhs[0] = mxCreateDoubleMatrix(1, 1, mxREAL));
c = mxGetPr(plhs[1] = mxCreateDoubleMatrix(nc, 1, mxREAL));
what = "f";
*f = objval(0, x, &nerror);
what = "c";
conval(x, c, &nerror);
return;
}
g = mxGetPr(plhs[0] = mxCreateDoubleMatrix(n, 1, mxREAL));
J1 = mxGetPr(plhs[1] = mxCreateDoubleMatrix(nc, n, mxREAL));
what = "g";
objgrd(0, x, g, &nerror);
if (nc) {
memset(J1, 0, Jsize);
what = "J";
jacval(x, J, &nerror);
cgp = Cgrad;
for(cgpe = cgp + nc; cgp < cgpe; J1++)
for(cg = *cgp++; cg; cg = cg->next)
J1[nc*cg->varno] = J[cg->goff];
}
return;
}
if (nlhs == 0 && (nrhs == 3 || nrhs == 4)) {
/* eval2('solution message', x, v): x = primal, v = dual */
/* optional 4th arg = solve_result_num */
if (!mxIsChar(prhs[0]))
usage();
x = sizechk(prhs[1],"x",n);
v = sizechk(prhs[2],"v",nc);
if (mxGetString(prhs[0], buf, sizeof(buf)))
mexErrMsgTxt(
"Expected 'solution message' as first argument\n");
solve_result_num = nrhs == 3 ? -1 /* unknown */
: (int)*sizechk(prhs[3],"solve_result_num",1);
write_sol(buf, x, v, 0);
return;
}
if (nlhs != 1 || nrhs != 1)
usage();
v = sizechk(prhs[0],"v",nc);
W = mxGetPr(plhs[0] = mxCreateDoubleMatrix(n, n, mxREAL));
what = "W";
fullhes(W, n, 0, 0, v);
}