summaryrefslogtreecommitdiff
path: root/SRC/slahrd.f
diff options
context:
space:
mode:
Diffstat (limited to 'SRC/slahrd.f')
-rw-r--r--SRC/slahrd.f70
1 files changed, 49 insertions, 21 deletions
diff --git a/SRC/slahrd.f b/SRC/slahrd.f
index 05c09df8..b75a3dc4 100644
--- a/SRC/slahrd.f
+++ b/SRC/slahrd.f
@@ -66,6 +66,55 @@
*> The number of columns to be reduced.
*> \endverbatim
*>
+*> \param[in,out] A
+*> \verbatim
+*> A is REAL array, dimension (LDA,N-K+1)
+*> On entry, the n-by-(n-k+1) general matrix A.
+*> On exit, the elements on and above the k-th subdiagonal in
+*> the first NB columns are overwritten with the corresponding
+*> elements of the reduced matrix; the elements below the k-th
+*> subdiagonal, with the array TAU, represent the matrix Q as a
+*> product of elementary reflectors. The other columns of A are
+*> unchanged. See Further Details.
+*> \endverbatim
+*>
+*> \param[in] LDA
+*> \verbatim
+*> LDA is INTEGER
+*> The leading dimension of the array A. LDA >= max(1,N).
+*> \endverbatim
+*>
+*> \param[out] TAU
+*> \verbatim
+*> TAU is REAL array, dimension (NB)
+*> The scalar factors of the elementary reflectors. See Further
+*> Details.
+*> \endverbatim
+*>
+*> \param[out] T
+*> \verbatim
+*> T is REAL array, dimension (LDT,NB)
+*> The upper triangular matrix T.
+*> \endverbatim
+*>
+*> \param[in] LDT
+*> \verbatim
+*> LDT is INTEGER
+*> The leading dimension of the array T. LDT >= NB.
+*> \endverbatim
+*>
+*> \param[out] Y
+*> \verbatim
+*> Y is REAL array, dimension (LDY,NB)
+*> The n-by-nb matrix Y.
+*> \endverbatim
+*>
+*> \param[in] LDY
+*> \verbatim
+*> LDY is INTEGER
+*> The leading dimension of the array Y. LDY >= N.
+*> \endverbatim
+*>
*
* Authors
* =======
@@ -84,27 +133,6 @@
* ===============
*>\details \b Further \b Details
*> \verbatim
-* unchanged. See Further Details.
-*>
-*> LDA (input) INTEGER
-*> The leading dimension of the array A. LDA >= max(1,N).
-*>
-*> TAU (output) REAL array, dimension (NB)
-*> The scalar factors of the elementary reflectors. See Further
-*> Details.
-*>
-*> T (output) REAL array, dimension (LDT,NB)
-*> The upper triangular matrix T.
-*>
-*> LDT (input) INTEGER
-*> The leading dimension of the array T. LDT >= NB.
-*>
-*> Y (output) REAL array, dimension (LDY,NB)
-*> The n-by-nb matrix Y.
-*>
-*> LDY (input) INTEGER
-*> The leading dimension of the array Y. LDY >= N.
-*>
*>
*> The matrix Q is represented as a product of nb elementary reflectors
*>