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template <typename Scalar>
void ei_r1mpyq(int m, int n, Scalar *a, int
lda, const Scalar *v, const Scalar *w)
{
/* System generated locals */
int a_dim1, a_offset;
/* Local variables */
int i, j, nm1, nmj;
Scalar cos__=0., sin__=0., temp;
/* Parameter adjustments */
--w;
--v;
a_dim1 = lda;
a_offset = 1 + a_dim1 * 1;
a -= a_offset;
/* Function Body */
nm1 = n - 1;
if (nm1 < 1)
return;
/* apply the first set of givens rotations to a. */
for (nmj = 1; nmj <= nm1; ++nmj) {
j = n - nmj;
if (ei_abs(v[j]) > 1.) {
cos__ = 1. / v[j];
sin__ = ei_sqrt(1. - ei_abs2(cos__));
} else {
sin__ = v[j];
cos__ = ei_sqrt(1. - ei_abs2(sin__));
}
for (i = 1; i <= m; ++i) {
temp = cos__ * a[i + j * a_dim1] - sin__ * a[i + n * a_dim1];
a[i + n * a_dim1] = sin__ * a[i + j * a_dim1] + cos__ * a[
i + n * a_dim1];
a[i + j * a_dim1] = temp;
}
}
/* apply the second set of givens rotations to a. */
for (j = 1; j <= nm1; ++j) {
if (ei_abs(w[j]) > 1.) {
cos__ = 1. / w[j];
sin__ = ei_sqrt(1. - ei_abs2(cos__));
} else {
sin__ = w[j];
cos__ = ei_sqrt(1. - ei_abs2(sin__));
}
for (i = 1; i <= m; ++i) {
temp = cos__ * a[i + j * a_dim1] + sin__ * a[i + n * a_dim1];
a[i + n * a_dim1] = -sin__ * a[i + j * a_dim1] + cos__ * a[
i + n * a_dim1];
a[i + j * a_dim1] = temp;
}
}
return;
} /* r1mpyq_ */
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