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template <typename Scalar>
int ei_fdjac2(minpack_func_mn fcn, int m, int n, Scalar *x,
const Scalar *fvec, Scalar *fjac, int ldfjac,
Scalar epsfcn, Scalar *wa)
{
/* System generated locals */
int fjac_dim1, fjac_offset;
/* Local variables */
Scalar h__;
int i, j;
Scalar eps, temp;
int iflag;
/* Parameter adjustments */
--wa;
--fvec;
--x;
fjac_dim1 = ldfjac;
fjac_offset = 1 + fjac_dim1 * 1;
fjac -= fjac_offset;
/* Function Body */
const Scalar epsmch = epsilon<Scalar>();
eps = ei_sqrt((std::max(epsfcn,epsmch)));
for (j = 1; j <= n; ++j) {
temp = x[j];
h__ = eps * ei_abs(temp);
if (h__ == 0.) {
h__ = eps;
}
x[j] = temp + h__;
iflag = (*fcn)(m, n, &x[1], &wa[1], 1);
if (iflag < 0) {
/* goto L30; */
return iflag;
}
x[j] = temp;
for (i = 1; i <= m; ++i) {
fjac[i + j * fjac_dim1] = (wa[i] - fvec[i]) / h__;
/* L10: */
}
/* L20: */
}
/* L30: */
return iflag;
/* last card of subroutine fdjac2. */
} /* fdjac2_ */
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