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beautify functors for lmdif, lmstr, hybrj, hybrd

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This commit is contained in:
Thomas Capricelli
2009-08-23 04:57:48 +02:00
parent acd757737a
commit 134dea76d3
7 changed files with 76 additions and 81 deletions
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115
unsupported/test/NonLinear.cpp
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@@ -214,40 +214,36 @@ void testLmder()
}
struct hybrj_functor {
static int f(const VectorXd &x, VectorXd &fvec, MatrixXd &fjac, int iflag)
static int debug(const VectorXd & /* x */, const VectorXd & /* fvec */, const MatrixXd & /* fjac */) { return 0;}
static int f(const VectorXd &x, VectorXd &fvec)
{
/* subroutine fcn for hybrj1 example. */
int j, k;
double one=1, temp, temp1, temp2, three=3, two=2, zero=0, four=4;
double temp, temp1, temp2;
const int n = x.size();
assert(fvec.size()==n);
for (int k = 0; k < n; k++)
{
temp = (3. - 2.*x[k])*x[k];
temp1 = 0.;
if (k) temp1 = x[k-1];
temp2 = 0.;
if (k != n-1) temp2 = x[k+1];
fvec[k] = temp - temp1 - 2.*temp2 + 1.;
}
return 0;
}
static int df(const VectorXd &x, MatrixXd &fjac)
{
const int n = x.size();
assert(fjac.rows()==n);
assert(fjac.cols()==n);
if (iflag != 2)
for (int k = 0; k < n; k++)
{
for (k = 0; k < n; k++)
{
temp = (three - two*x[k])*x[k];
temp1 = zero;
if (k) temp1 = x[k-1];
temp2 = zero;
if (k != n-1) temp2 = x[k+1];
fvec[k] = temp - temp1 - two*temp2 + one;
}
}
else
{
for (k = 0; k < n; k++)
{
for (j = 0; j < n; j++)
fjac(k,j) = zero;
fjac(k,k) = three - four*x[k];
if (k) fjac(k,k-1) = -one;
if (k != n-1) fjac(k,k+1) = -two;
}
for (int j = 0; j < n; j++)
fjac(k,j) = 0.;
fjac(k,k) = 3.- 4.*x[k];
if (k) fjac(k,k-1) = -1.;
if (k != n-1) fjac(k,k+1) = -2.;
}
return 0;
}
@@ -319,24 +315,21 @@ void testHybrj()
}
struct hybrd_functor {
static int f(const VectorXd &x, VectorXd &fvec, int /*iflag*/)
static int debug(const VectorXd & /* x */, const VectorXd & /* fvec */) { return 0;}
static int f(const VectorXd &x, VectorXd &fvec)
{
/* subroutine fcn for hybrd1 example. */
int k;
double one=1, temp, temp1, temp2, three=3, two=2, zero=0;
double temp, temp1, temp2;
const int n = x.size();
assert(fvec.size()==n);
for (k=0; k < n; k++)
for (int k=0; k < n; k++)
{
temp = (three - two*x[k])*x[k];
temp1 = zero;
temp = (3. - 2.*x[k])*x[k];
temp1 = 0.;
if (k) temp1 = x[k-1];
temp2 = zero;
temp2 = 0.;
if (k != n-1) temp2 = x[k+1];
fvec[k] = temp - temp1 - two*temp2 + one;
fvec[k] = temp - temp1 - 2.*temp2 + 1.;
}
return 0;
}
@@ -400,41 +393,42 @@ void testHybrd()
}
struct lmstr_functor {
static int f(const VectorXd &x, VectorXd &fvec, VectorXd &fjrow, int iflag)
static int debug(const VectorXd & /* x */, const VectorXd & /* fvec */, const VectorXd & /* fjac */) { return 0;}
static int f(const VectorXd &x, VectorXd &fvec)
{
/* subroutine fcn for lmstr1 example. */
int i;
double tmp1, tmp2, tmp3, tmp4;
double tmp1, tmp2, tmp3;
double y[15]={1.4e-1, 1.8e-1, 2.2e-1, 2.5e-1, 2.9e-1, 3.2e-1, 3.5e-1,
3.9e-1, 3.7e-1, 5.8e-1, 7.3e-1, 9.6e-1, 1.34, 2.1, 4.39};
assert(15==fvec.size());
assert(3==x.size());
assert(fjrow.size()==x.size());
if (iflag < 2)
for (int i=0; i<15; i++)
{
for (i=0; i<15; i++)
{
tmp1 = i+1;
tmp2 = 16 - i - 1;
tmp3 = (i>=8)? tmp2 : tmp1;
fvec[i] = y[i] - (x[0] + tmp1/(x[1]*tmp2 + x[2]*tmp3));
}
}
else
{
i = iflag-2;
tmp1 = i+1;
tmp2 = 16 - i - 1;
tmp3 = (i>=8)? tmp2 : tmp1;
tmp4 = (x[1]*tmp2 + x[2]*tmp3); tmp4 = tmp4*tmp4;
fjrow[0] = -1;
fjrow[1] = tmp1*tmp2/tmp4;
fjrow[2] = tmp1*tmp3/tmp4;
fvec[i] = y[i] - (x[0] + tmp1/(x[1]*tmp2 + x[2]*tmp3));
}
return 0;
}
static int df(const VectorXd &x, VectorXd &jac_row, int rownb)
{
assert(x.size()==3);
assert(jac_row.size()==x.size());
double tmp1, tmp2, tmp3, tmp4;
int i = rownb-2;
tmp1 = i+1;
tmp2 = 16 - i - 1;
tmp3 = (i>=8)? tmp2 : tmp1;
tmp4 = (x[1]*tmp2 + x[2]*tmp3); tmp4 = tmp4*tmp4;
jac_row[0] = -1;
jac_row[1] = tmp1*tmp2/tmp4;
jac_row[2] = tmp1*tmp3/tmp4;
return 0;
}
};
void testLmstr1()
@@ -495,7 +489,8 @@ void testLmstr()
}
struct lmdif_functor {
static int f(const VectorXd &x, VectorXd &fvec, int /*iflag*/)
static int debug(const VectorXd & /* x */, const VectorXd & /* fvec */) { return 0;}
static int f(const VectorXd &x, VectorXd &fvec)
{
/* function fcn for lmdif1 example */