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btracey
2015-08-03 16:59:00 -06:00
parent 0331cab04a
commit aa76326a1e
4 changed files with 10 additions and 10 deletions
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8
cgo/lapack.go
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@@ -82,10 +82,10 @@ func (impl Implementation) Dpotrf(ul blas.Uplo, n int, a []float64, lda int) (ok
// In a QR factorization, Q is an m×m orthonormal matrix, and R is an
// upper triangular m×n matrix.
//
// During Dgeqr2, a is modified to contain the information to construct Q and R.
// A is modified to contain the information to construct Q and R.
// The upper triangle of a contains the matrix R. The lower triangular elements
// (not including the diagonal) contain the elementary reflectors. Tau is modified
// to contain the reflector scales. Tau must have length at least k = min(m,n), and
// to contain the reflector scales. tau must have length at least min(m,n), and
// this function will panic otherwise.
//
// The ith elementary reflector can be explicitly constructed by first extracting
@@ -115,14 +115,14 @@ func (impl Implementation) Dgeqr2(m, n int, a []float64, lda int, tau, work []fl
}
// Dgeqrf computes the QR factorization of the m×n matrix A using a blocked
// algorithm. Please see the documentation for Dgeqr2 for a description of the
// algorithm. See the documentation for Dgeqr2 for a description of the
// parameters at entry and exit.
//
// The C interface does not support providing temporary storage. To provide compatibility
// with native, lwork == -1 will not run Dgeqrf but will instead write the minimum
// work necessary to work[0]. If len(work) < lwork, Dgels will panic.
//
// tau must be at least len min(m,n), and this function will panic otherwise.
// tau must have length at least min(m,n), and this function will panic otherwise.
func (impl Implementation) Dgeqrf(m, n int, a []float64, lda int, tau, work []float64, lwork int) {
if lwork == -1 {
work[0] = float64(n)