lstsq_space Interface
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- experimental
- 42 statements
- Source File
public interface lstsq_space
Computes the integer, real [, complex] working space required by the least-squares solver (Specification)
Description
This interface provides sizes of integer, real [, complex] working spaces required by the least-squares solver. These sizes can be used to pre-allocated working arrays in case several repeated least-squares solutions to a same system are sought. If pre-allocated working arrays are provided, no internal allocations will take place.
Subroutines
private pure module subroutine stdlib_linalg_c_lstsq_space_many(a, b, lrwork, liwork, lcwork)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| complex(kind=sp), | intent(in), | target | :: | a(:,:) |
Input matrix a[m,n] |
|
| complex(kind=sp), | intent(in) | :: | b(:,:) |
Right hand side vector or array, b[n] or b[n,nrhs] |
||
| integer(kind=ilp), | intent(out) | :: | lrwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | liwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | lcwork |
Size of the working space arrays |
private pure module subroutine stdlib_linalg_c_lstsq_space_one(a, b, lrwork, liwork, lcwork)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| complex(kind=sp), | intent(in), | target | :: | a(:,:) |
Input matrix a[m,n] |
|
| complex(kind=sp), | intent(in) | :: | b(:) |
Right hand side vector or array, b[n] or b[n,nrhs] |
||
| integer(kind=ilp), | intent(out) | :: | lrwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | liwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | lcwork |
Size of the working space arrays |
private pure module subroutine stdlib_linalg_d_lstsq_space_many(a, b, lrwork, liwork)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=dp), | intent(in), | target | :: | a(:,:) |
Input matrix a[m,n] |
|
| real(kind=dp), | intent(in) | :: | b(:,:) |
Right hand side vector or array, b[n] or b[n,nrhs] |
||
| integer(kind=ilp), | intent(out) | :: | lrwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | liwork |
Size of the working space arrays |
private pure module subroutine stdlib_linalg_d_lstsq_space_one(a, b, lrwork, liwork)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=dp), | intent(in), | target | :: | a(:,:) |
Input matrix a[m,n] |
|
| real(kind=dp), | intent(in) | :: | b(:) |
Right hand side vector or array, b[n] or b[n,nrhs] |
||
| integer(kind=ilp), | intent(out) | :: | lrwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | liwork |
Size of the working space arrays |
private pure module subroutine stdlib_linalg_s_lstsq_space_many(a, b, lrwork, liwork)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=sp), | intent(in), | target | :: | a(:,:) |
Input matrix a[m,n] |
|
| real(kind=sp), | intent(in) | :: | b(:,:) |
Right hand side vector or array, b[n] or b[n,nrhs] |
||
| integer(kind=ilp), | intent(out) | :: | lrwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | liwork |
Size of the working space arrays |
private pure module subroutine stdlib_linalg_s_lstsq_space_one(a, b, lrwork, liwork)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=sp), | intent(in), | target | :: | a(:,:) |
Input matrix a[m,n] |
|
| real(kind=sp), | intent(in) | :: | b(:) |
Right hand side vector or array, b[n] or b[n,nrhs] |
||
| integer(kind=ilp), | intent(out) | :: | lrwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | liwork |
Size of the working space arrays |
private pure module subroutine stdlib_linalg_z_lstsq_space_many(a, b, lrwork, liwork, lcwork)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| complex(kind=dp), | intent(in), | target | :: | a(:,:) |
Input matrix a[m,n] |
|
| complex(kind=dp), | intent(in) | :: | b(:,:) |
Right hand side vector or array, b[n] or b[n,nrhs] |
||
| integer(kind=ilp), | intent(out) | :: | lrwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | liwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | lcwork |
Size of the working space arrays |
private pure module subroutine stdlib_linalg_z_lstsq_space_one(a, b, lrwork, liwork, lcwork)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| complex(kind=dp), | intent(in), | target | :: | a(:,:) |
Input matrix a[m,n] |
|
| complex(kind=dp), | intent(in) | :: | b(:) |
Right hand side vector or array, b[n] or b[n,nrhs] |
||
| integer(kind=ilp), | intent(out) | :: | lrwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | liwork |
Size of the working space arrays |
||
| integer(kind=ilp), | intent(out) | :: | lcwork |
Size of the working space arrays |