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| author | jason <jason@8a072113-8704-0410-8d35-dd094bca7971> | 2008-10-28 01:38:50 +0000 |
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| committer | jason <jason@8a072113-8704-0410-8d35-dd094bca7971> | 2008-10-28 01:38:50 +0000 |
| commit | baba851215b44ac3b60b9248eb02bcce7eb76247 (patch) | |
| tree | 8c0f5c006875532a30d4409f5e94b0f310ff00a7 /SRC/clag2z.f | |
| download | lapack-baba851215b44ac3b60b9248eb02bcce7eb76247.tar.gz lapack-baba851215b44ac3b60b9248eb02bcce7eb76247.tar.bz2 lapack-baba851215b44ac3b60b9248eb02bcce7eb76247.zip | |
Move LAPACK trunk into position.
Diffstat (limited to 'SRC/clag2z.f')
| -rw-r--r-- | SRC/clag2z.f | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/SRC/clag2z.f b/SRC/clag2z.f new file mode 100644 index 00000000..a2fdbda3 --- /dev/null +++ b/SRC/clag2z.f @@ -0,0 +1,74 @@ + SUBROUTINE CLAG2Z( M, N, SA, LDSA, A, LDA, INFO) +* +* -- LAPACK PROTOTYPE auxilary routine (version 3.1.1) -- +* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. +* January 2007 +* +* .. +* .. WARNING: PROTOTYPE .. +* This is an LAPACK PROTOTYPE routine which means that the +* interface of this routine is likely to be changed in the future +* based on community feedback. +* +* .. +* .. Scalar Arguments .. + INTEGER INFO,LDA,LDSA,M,N +* .. +* .. Array Arguments .. + COMPLEX SA(LDSA,*) + COMPLEX*16 A(LDA,*) +* .. +* +* Purpose +* ======= +* +* CLAG2Z converts a COMPLEX SINGLE PRECISION matrix, SA, to a COMPLEX +* DOUBLE PRECISION matrix, A. +* +* Note that while it is possible to overflow while converting +* from double to single, it is not possible to overflow when +* converting from single to double. +* +* This is a helper routine so there is no argument checking. +* +* Arguments +* ========= +* +* M (input) INTEGER +* The number of lines of the matrix A. M >= 0. +* +* N (input) INTEGER +* The number of columns of the matrix A. N >= 0. +* +* SA (output) REAL array, dimension (LDSA,N) +* On exit, the M-by-N coefficient matrix SA. +* +* LDSA (input) INTEGER +* The leading dimension of the array SA. LDSA >= max(1,M). +* +* A (input) DOUBLE PRECISION array, dimension (LDA,N) +* On entry, the M-by-N coefficient matrix A. +* +* LDA (input) INTEGER +* The leading dimension of the array A. LDA >= max(1,M). +* +* INFO (output) INTEGER +* = 0: successful exit +* ========= +* +* .. Local Scalars .. + INTEGER I,J +* .. +* .. Executable Statements .. +* + INFO = 0 + DO 20 J = 1,N + DO 30 I = 1,M + A(I,J) = SA(I,J) + 30 CONTINUE + 20 CONTINUE + RETURN +* +* End of CLAG2Z +* + END |