whitespace fixes
This commit is contained in:
Axel Kohlmeyer
@ -1,13 +1,13 @@
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/* fortran/dsytd2.f -- translated by f2c (version 20200916).
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You must link the resulting object file with libf2c:
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on Microsoft Windows system, link with libf2c.lib;
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on Linux or Unix systems, link with .../path/to/libf2c.a -lm
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or, if you install libf2c.a in a standard place, with -lf2c -lm
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-- in that order, at the end of the command line, as in
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cc *.o -lf2c -lm
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Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
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on Microsoft Windows system, link with libf2c.lib;
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on Linux or Unix systems, link with .../path/to/libf2c.a -lm
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or, if you install libf2c.a in a standard place, with -lf2c -lm
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-- in that order, at the end of the command line, as in
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cc *.o -lf2c -lm
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Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
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http://www.netlib.org/f2c/libf2c.zip
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http://www.netlib.org/f2c/libf2c.zip
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*/
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#ifdef __cplusplus
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@ -197,30 +197,30 @@ f"> */
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/* > */
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/* ===================================================================== */
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/* Subroutine */ int dsytd2_(char *uplo, integer *n, doublereal *a, integer *
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lda, doublereal *d__, doublereal *e, doublereal *tau, integer *info,
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ftnlen uplo_len)
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lda, doublereal *d__, doublereal *e, doublereal *tau, integer *info,
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ftnlen uplo_len)
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{
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/* System generated locals */
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integer a_dim1, a_offset, i__1, i__2, i__3;
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/* Local variables */
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integer i__;
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extern doublereal ddot_(integer *, doublereal *, integer *, doublereal *,
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integer *);
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extern doublereal ddot_(integer *, doublereal *, integer *, doublereal *,
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integer *);
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doublereal taui;
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extern /* Subroutine */ int dsyr2_(char *, integer *, doublereal *,
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doublereal *, integer *, doublereal *, integer *, doublereal *,
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integer *, ftnlen);
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extern /* Subroutine */ int dsyr2_(char *, integer *, doublereal *,
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doublereal *, integer *, doublereal *, integer *, doublereal *,
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integer *, ftnlen);
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doublereal alpha;
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extern logical lsame_(char *, char *, ftnlen, ftnlen);
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extern /* Subroutine */ int daxpy_(integer *, doublereal *, doublereal *,
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integer *, doublereal *, integer *);
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extern /* Subroutine */ int daxpy_(integer *, doublereal *, doublereal *,
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integer *, doublereal *, integer *);
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logical upper;
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extern /* Subroutine */ int dsymv_(char *, integer *, doublereal *,
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doublereal *, integer *, doublereal *, integer *, doublereal *,
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doublereal *, integer *, ftnlen), dlarfg_(integer *, doublereal *,
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doublereal *, integer *, doublereal *), xerbla_(char *, integer *
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, ftnlen);
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extern /* Subroutine */ int dsymv_(char *, integer *, doublereal *,
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doublereal *, integer *, doublereal *, integer *, doublereal *,
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doublereal *, integer *, ftnlen), dlarfg_(integer *, doublereal *,
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doublereal *, integer *, doublereal *), xerbla_(char *, integer *
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, ftnlen);
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/* -- LAPACK computational routine -- */
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@ -260,122 +260,122 @@ f"> */
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*info = 0;
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upper = lsame_(uplo, (char *)"U", (ftnlen)1, (ftnlen)1);
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if (! upper && ! lsame_(uplo, (char *)"L", (ftnlen)1, (ftnlen)1)) {
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*info = -1;
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*info = -1;
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} else if (*n < 0) {
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*info = -2;
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*info = -2;
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} else if (*lda < max(1,*n)) {
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*info = -4;
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*info = -4;
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}
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if (*info != 0) {
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i__1 = -(*info);
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xerbla_((char *)"DSYTD2", &i__1, (ftnlen)6);
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return 0;
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i__1 = -(*info);
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xerbla_((char *)"DSYTD2", &i__1, (ftnlen)6);
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return 0;
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}
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/* Quick return if possible */
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if (*n <= 0) {
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return 0;
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return 0;
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}
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if (upper) {
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/* Reduce the upper triangle of A */
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for (i__ = *n - 1; i__ >= 1; --i__) {
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for (i__ = *n - 1; i__ >= 1; --i__) {
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/* Generate elementary reflector H(i) = I - tau * v * v**T */
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/* to annihilate A(1:i-1,i+1) */
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dlarfg_(&i__, &a[i__ + (i__ + 1) * a_dim1], &a[(i__ + 1) * a_dim1
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+ 1], &c__1, &taui);
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e[i__] = a[i__ + (i__ + 1) * a_dim1];
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dlarfg_(&i__, &a[i__ + (i__ + 1) * a_dim1], &a[(i__ + 1) * a_dim1
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+ 1], &c__1, &taui);
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e[i__] = a[i__ + (i__ + 1) * a_dim1];
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if (taui != 0.) {
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if (taui != 0.) {
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/* Apply H(i) from both sides to A(1:i,1:i) */
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a[i__ + (i__ + 1) * a_dim1] = 1.;
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a[i__ + (i__ + 1) * a_dim1] = 1.;
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/* Compute x := tau * A * v storing x in TAU(1:i) */
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dsymv_(uplo, &i__, &taui, &a[a_offset], lda, &a[(i__ + 1) *
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a_dim1 + 1], &c__1, &c_b8, &tau[1], &c__1, (ftnlen)1);
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dsymv_(uplo, &i__, &taui, &a[a_offset], lda, &a[(i__ + 1) *
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a_dim1 + 1], &c__1, &c_b8, &tau[1], &c__1, (ftnlen)1);
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/* Compute w := x - 1/2 * tau * (x**T * v) * v */
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alpha = taui * -.5 * ddot_(&i__, &tau[1], &c__1, &a[(i__ + 1)
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* a_dim1 + 1], &c__1);
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daxpy_(&i__, &alpha, &a[(i__ + 1) * a_dim1 + 1], &c__1, &tau[
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1], &c__1);
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alpha = taui * -.5 * ddot_(&i__, &tau[1], &c__1, &a[(i__ + 1)
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* a_dim1 + 1], &c__1);
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daxpy_(&i__, &alpha, &a[(i__ + 1) * a_dim1 + 1], &c__1, &tau[
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1], &c__1);
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/* Apply the transformation as a rank-2 update: */
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/* A := A - v * w**T - w * v**T */
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dsyr2_(uplo, &i__, &c_b14, &a[(i__ + 1) * a_dim1 + 1], &c__1,
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&tau[1], &c__1, &a[a_offset], lda, (ftnlen)1);
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dsyr2_(uplo, &i__, &c_b14, &a[(i__ + 1) * a_dim1 + 1], &c__1,
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&tau[1], &c__1, &a[a_offset], lda, (ftnlen)1);
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a[i__ + (i__ + 1) * a_dim1] = e[i__];
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}
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d__[i__ + 1] = a[i__ + 1 + (i__ + 1) * a_dim1];
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tau[i__] = taui;
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a[i__ + (i__ + 1) * a_dim1] = e[i__];
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}
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d__[i__ + 1] = a[i__ + 1 + (i__ + 1) * a_dim1];
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tau[i__] = taui;
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/* L10: */
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}
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d__[1] = a[a_dim1 + 1];
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}
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d__[1] = a[a_dim1 + 1];
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} else {
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/* Reduce the lower triangle of A */
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i__1 = *n - 1;
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for (i__ = 1; i__ <= i__1; ++i__) {
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i__1 = *n - 1;
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for (i__ = 1; i__ <= i__1; ++i__) {
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/* Generate elementary reflector H(i) = I - tau * v * v**T */
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/* to annihilate A(i+2:n,i) */
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i__2 = *n - i__;
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i__2 = *n - i__;
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/* Computing MIN */
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i__3 = i__ + 2;
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dlarfg_(&i__2, &a[i__ + 1 + i__ * a_dim1], &a[min(i__3,*n) + i__ *
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a_dim1], &c__1, &taui);
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e[i__] = a[i__ + 1 + i__ * a_dim1];
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i__3 = i__ + 2;
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dlarfg_(&i__2, &a[i__ + 1 + i__ * a_dim1], &a[min(i__3,*n) + i__ *
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a_dim1], &c__1, &taui);
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e[i__] = a[i__ + 1 + i__ * a_dim1];
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if (taui != 0.) {
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if (taui != 0.) {
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/* Apply H(i) from both sides to A(i+1:n,i+1:n) */
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a[i__ + 1 + i__ * a_dim1] = 1.;
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a[i__ + 1 + i__ * a_dim1] = 1.;
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/* Compute x := tau * A * v storing y in TAU(i:n-1) */
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i__2 = *n - i__;
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dsymv_(uplo, &i__2, &taui, &a[i__ + 1 + (i__ + 1) * a_dim1],
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lda, &a[i__ + 1 + i__ * a_dim1], &c__1, &c_b8, &tau[
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i__], &c__1, (ftnlen)1);
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i__2 = *n - i__;
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dsymv_(uplo, &i__2, &taui, &a[i__ + 1 + (i__ + 1) * a_dim1],
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lda, &a[i__ + 1 + i__ * a_dim1], &c__1, &c_b8, &tau[
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i__], &c__1, (ftnlen)1);
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/* Compute w := x - 1/2 * tau * (x**T * v) * v */
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i__2 = *n - i__;
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alpha = taui * -.5 * ddot_(&i__2, &tau[i__], &c__1, &a[i__ +
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1 + i__ * a_dim1], &c__1);
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i__2 = *n - i__;
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daxpy_(&i__2, &alpha, &a[i__ + 1 + i__ * a_dim1], &c__1, &tau[
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i__], &c__1);
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i__2 = *n - i__;
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alpha = taui * -.5 * ddot_(&i__2, &tau[i__], &c__1, &a[i__ +
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1 + i__ * a_dim1], &c__1);
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i__2 = *n - i__;
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daxpy_(&i__2, &alpha, &a[i__ + 1 + i__ * a_dim1], &c__1, &tau[
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i__], &c__1);
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/* Apply the transformation as a rank-2 update: */
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/* A := A - v * w**T - w * v**T */
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i__2 = *n - i__;
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dsyr2_(uplo, &i__2, &c_b14, &a[i__ + 1 + i__ * a_dim1], &c__1,
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&tau[i__], &c__1, &a[i__ + 1 + (i__ + 1) * a_dim1],
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lda, (ftnlen)1);
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i__2 = *n - i__;
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dsyr2_(uplo, &i__2, &c_b14, &a[i__ + 1 + i__ * a_dim1], &c__1,
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&tau[i__], &c__1, &a[i__ + 1 + (i__ + 1) * a_dim1],
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lda, (ftnlen)1);
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a[i__ + 1 + i__ * a_dim1] = e[i__];
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}
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d__[i__] = a[i__ + i__ * a_dim1];
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tau[i__] = taui;
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a[i__ + 1 + i__ * a_dim1] = e[i__];
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}
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d__[i__] = a[i__ + i__ * a_dim1];
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tau[i__] = taui;
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/* L20: */
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}
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d__[*n] = a[*n + *n * a_dim1];
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}
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d__[*n] = a[*n + *n * a_dim1];
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}
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return 0;
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@ -385,5 +385,5 @@ f"> */
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} /* dsytd2_ */
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#ifdef __cplusplus
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}
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}
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#endif
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