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This commit is contained in:
Thomas Capricelli 2009-11-26 02:42:27 +01:00
parent f795681da0
commit 9cbfdbad22
1 changed files with 5 additions and 32 deletions
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37
unsupported/Eigen/src/NonLinearOptimization/r1mpyq.h
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@ -18,28 +18,18 @@ void ei_r1mpyq(int m, int n, Scalar *a, int
a -= a_offset; a -= a_offset;
/* Function Body */ /* Function Body */
nm1 = n - 1;
if (nm1 < 1)
return;
/* apply the first set of givens rotations to a. */ /* apply the first set of givens rotations to a. */
nm1 = n - 1;
if (nm1 < 1) {
/* goto L50; */
return;
}
for (nmj = 1; nmj <= nm1; ++nmj) { for (nmj = 1; nmj <= nm1; ++nmj) {
j = n - nmj; j = n - nmj;
if (ei_abs(v[j]) > 1.) { if (ei_abs(v[j]) > 1.) {
cos__ = 1. / v[j]; cos__ = 1. / v[j];
}
if (ei_abs(v[j]) > 1.) {
/* Computing 2nd power */
sin__ = ei_sqrt(1. - ei_abs2(cos__)); sin__ = ei_sqrt(1. - ei_abs2(cos__));
} } else {
if (ei_abs(v[j]) <= 1.) {
sin__ = v[j]; sin__ = v[j];
}
if (ei_abs(v[j]) <= 1.) {
/* Computing 2nd power */
cos__ = ei_sqrt(1. - ei_abs2(sin__)); cos__ = ei_sqrt(1. - ei_abs2(sin__));
} }
for (i = 1; i <= m; ++i) { for (i = 1; i <= m; ++i) {
@ -47,26 +37,15 @@ void ei_r1mpyq(int m, int n, Scalar *a, int
a[i + n * a_dim1] = sin__ * a[i + j * a_dim1] + cos__ * a[ a[i + n * a_dim1] = sin__ * a[i + j * a_dim1] + cos__ * a[
i + n * a_dim1]; i + n * a_dim1];
a[i + j * a_dim1] = temp; a[i + j * a_dim1] = temp;
/* L10: */
} }
/* L20: */
} }
/* apply the second set of givens rotations to a. */ /* apply the second set of givens rotations to a. */
for (j = 1; j <= nm1; ++j) { for (j = 1; j <= nm1; ++j) {
if (ei_abs(w[j]) > 1.) { if (ei_abs(w[j]) > 1.) {
cos__ = 1. / w[j]; cos__ = 1. / w[j];
}
if (ei_abs(w[j]) > 1.) {
/* Computing 2nd power */
sin__ = ei_sqrt(1. - ei_abs2(cos__)); sin__ = ei_sqrt(1. - ei_abs2(cos__));
} } else {
if (ei_abs(w[j]) <= 1.) {
sin__ = w[j]; sin__ = w[j];
}
if (ei_abs(w[j]) <= 1.) {
/* Computing 2nd power */
cos__ = ei_sqrt(1. - ei_abs2(sin__)); cos__ = ei_sqrt(1. - ei_abs2(sin__));
} }
for (i = 1; i <= m; ++i) { for (i = 1; i <= m; ++i) {
@ -74,14 +53,8 @@ void ei_r1mpyq(int m, int n, Scalar *a, int
a[i + n * a_dim1] = -sin__ * a[i + j * a_dim1] + cos__ * a[ a[i + n * a_dim1] = -sin__ * a[i + j * a_dim1] + cos__ * a[
i + n * a_dim1]; i + n * a_dim1];
a[i + j * a_dim1] = temp; a[i + j * a_dim1] = temp;
/* L30: */
} }
/* L40: */
} }
/* L50: */
return; return;
/* last card of subroutine r1mpyq. */
} /* r1mpyq_ */ } /* r1mpyq_ */