Developer Reference

  • 2020.2
  • 07/15/2020
  • Public Content
Contents

?tpttf

Copies a triangular matrix from the standard packed format (TP) to the rectangular full packed format (TF).

Syntax

call stpttf
(
transr
,
uplo
,
n
,
ap
,
arf
,
info
)
call dtpttf
(
transr
,
uplo
,
n
,
ap
,
arf
,
info
)
call ctpttf
(
transr
,
uplo
,
n
,
ap
,
arf
,
info
)
call ztpttf
(
transr
,
uplo
,
n
,
ap
,
arf
,
info
)
Include Files
  • mkl.fi
Description
The routine copies a triangular matrix
A
from the standard packed format to the Rectangular Full Packed (RFP) format. For the description of the RFP format, see Matrix Storage Schemes.
Input Parameters
transr
CHARACTER*1
.
= 'N':
arf
must be in the Normal format,
= 'T':
arf
must be in the Transpose format (for
stpttf
and
dtpttf
),
= 'C':
arf
must be in the Conjugate-transpose format (for
ctpttf
and
ztpttf
).
uplo
CHARACTER*1
.
Specifies whether
A
is upper or lower triangular:
= 'U': A is upper triangular,
= 'L': A is lower triangular.
n
INTEGER
.
The order of the matrix
A
.
n
0
.
ap
REAL
for
stpttf
,
DOUBLE PRECISION
for
dtpttf
,
COMPLEX
for
ctpttf
,
DOUBLE COMPLEX
for
ztpttf
.
Array, size at least max (1,
n
*(
n
+1)/2).
On entry, the upper or lower triangular matrix
A
, packed
columnwise
in a linear array.
The
j
-th column of
A
is stored in the array
ap
as follows:
if
uplo
= 'U',
ap
(i + (j-1)*j/2)
=
A(i,j)
for 1
i
j
,
if
uplo
= 'L',
ap
(i + (j-1)*(2n-j)/2)
=
A(i,j)
for
j
i
n
.
Output Parameters
arf
REAL
for
stpttf
,
DOUBLE PRECISION
for
dtpttf
,
COMPLEX
for
ctfttp
,
DOUBLE COMPLEX
for
ztpttf
.
Array, size at least
max
(1,
n
*(
n
+1)/2).
On exit, the upper or lower triangular matrix
A
stored in the RFP format.
info
INTEGER
.
=0: successful exit,
< 0: if
info
= -
i
, the
i
-th parameter had an illegal value.
If
info
= -1011
, memory allocation error occurred.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effe