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Arguments

A
(input/output) REAL or COMPLEX array, shape with and .
On entry, the matrix .
On exit, if JOB = 'U' and U is not present, then A is overwritten with the first columns of (the left singular vectors, stored columnwise).
If JOB = 'V' and VT is not present, then A is overwritten with the first rows of (the right singular vectors, stored rowwise).
In all cases the original contents of A are destroyed.

S
(output) REAL array, shape with .
The singular values of , sorted so that .

U
Optional (output) REAL or COMPLEX array, shape with and or .
If , U contains the matrix .
If , U contains the first columns of (the left singular vectors, stored columnwise).

VT
Optional (output) REAL or COMPLEX array, shape with or and .
If , contains the matrix .
If , VT contains the first rows of (the right singular vectors, stored rowwise).

WW
Optional (output) REAL array, shape with If INFO , WW contains the unconverged superdiagonal elements of an upper bidiagonal matrix whose diagonal is in (not necessarily sorted). has the same singular values as .

Note: WW is a dummy argument for LA_GESDD.

JOB
Optional (input) CHARACTER(LEN=1). Default value: 'N'.

INFO
Optional (output) INTEGER. If INFO is not present and an error occurs, then the program is terminated with an error message.
References: [1, pages 20, 46, 66, 67, 94, 111, 113, 147, 158, 159, 188, 236, 238,] and [17,9,20].     Next: Examples Up: Standard Singular Value Problems Previous: Purpose   Contents   Index
Susan Blackford 2001-08-19