Mercurial > octave-nkf
changeset 8194:aea271e60434
add missing BLAS routines
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Wed, 08 Oct 2008 08:24:50 +0200 |
| parents | 5fd507839b76 |
| children | ec3a55bd876b |
| files | libcruft/blas/Makefile.in libcruft/blas/csyrk.f |
| diffstat | 2 files changed, 296 insertions(+), 2 deletions(-) [+] |
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--- a/libcruft/blas/Makefile.in Wed Oct 08 08:01:46 2008 +0200 +++ b/libcruft/blas/Makefile.in Wed Oct 08 08:24:50 2008 +0200 @@ -32,13 +32,13 @@ dzasum.f dznrm2.f icamax.f idamax.f isamax.f izamax.f lsame.f sdot.f \ sgemm.f sgemv.f sscal.f ssyrk.f strsm.f zaxpy.f zcopy.f zdotc.f \ zdotu.f zdrot.f zdscal.f zgemm.f zgemv.f zgerc.f zgeru.f zhemv.f \ - zher.f zher2.f zher2k.f zherk.f zscal.f zswap.f ztbsv.f ztrmm.f \ + zher.f zher2.f zher2k.f zherk.f zscal.f zswap.f zsyrk.f ztbsv.f ztrmm.f \ ztrmv.f ztrsm.f ztrsv.f sasum.f saxpy.f scabs1.f scopy.f \ sger.f smach.f snrm2.f srot.f sswap.f ssymv.f ssyr.f \ ssyr2.f ssyr2k.f stbsv.f strmm.f strmv.f strsv.f \ scasum.f scnrm2.f caxpy.f ccopy.f cdotc.f cdotu.f \ csrot.f csscal.f cgemm.f cgemv.f cgerc.f cgeru.f chemv.f cher.f \ - cher2.f cher2k.f cherk.f cscal.f cswap.f ctbsv.f ctrmm.f ctrmv.f \ + cher2.f cher2k.f cherk.f cscal.f cswap.f csyrk.f ctbsv.f ctrmm.f ctrmv.f \ ctrsm.f ctrsv.f include $(TOPDIR)/Makeconf
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libcruft/blas/csyrk.f Wed Oct 08 08:24:50 2008 +0200 @@ -0,0 +1,294 @@ + SUBROUTINE CSYRK(UPLO,TRANS,N,K,ALPHA,A,LDA,BETA,C,LDC) +* .. Scalar Arguments .. + COMPLEX ALPHA,BETA + INTEGER K,LDA,LDC,N + CHARACTER TRANS,UPLO +* .. +* .. Array Arguments .. + COMPLEX A(LDA,*),C(LDC,*) +* .. +* +* Purpose +* ======= +* +* CSYRK performs one of the symmetric rank k operations +* +* C := alpha*A*A' + beta*C, +* +* or +* +* C := alpha*A'*A + beta*C, +* +* where alpha and beta are scalars, C is an n by n symmetric matrix +* and A is an n by k matrix in the first case and a k by n matrix +* in the second case. +* +* Arguments +* ========== +* +* UPLO - CHARACTER*1. +* On entry, UPLO specifies whether the upper or lower +* triangular part of the array C is to be referenced as +* follows: +* +* UPLO = 'U' or 'u' Only the upper triangular part of C +* is to be referenced. +* +* UPLO = 'L' or 'l' Only the lower triangular part of C +* is to be referenced. +* +* Unchanged on exit. +* +* TRANS - CHARACTER*1. +* On entry, TRANS specifies the operation to be performed as +* follows: +* +* TRANS = 'N' or 'n' C := alpha*A*A' + beta*C. +* +* TRANS = 'T' or 't' C := alpha*A'*A + beta*C. +* +* Unchanged on exit. +* +* N - INTEGER. +* On entry, N specifies the order of the matrix C. N must be +* at least zero. +* Unchanged on exit. +* +* K - INTEGER. +* On entry with TRANS = 'N' or 'n', K specifies the number +* of columns of the matrix A, and on entry with +* TRANS = 'T' or 't', K specifies the number of rows of the +* matrix A. K must be at least zero. +* Unchanged on exit. +* +* ALPHA - COMPLEX . +* On entry, ALPHA specifies the scalar alpha. +* Unchanged on exit. +* +* A - COMPLEX array of DIMENSION ( LDA, ka ), where ka is +* k when TRANS = 'N' or 'n', and is n otherwise. +* Before entry with TRANS = 'N' or 'n', the leading n by k +* part of the array A must contain the matrix A, otherwise +* the leading k by n part of the array A must contain the +* matrix A. +* Unchanged on exit. +* +* LDA - INTEGER. +* On entry, LDA specifies the first dimension of A as declared +* in the calling (sub) program. When TRANS = 'N' or 'n' +* then LDA must be at least max( 1, n ), otherwise LDA must +* be at least max( 1, k ). +* Unchanged on exit. +* +* BETA - COMPLEX . +* On entry, BETA specifies the scalar beta. +* Unchanged on exit. +* +* C - COMPLEX array of DIMENSION ( LDC, n ). +* Before entry with UPLO = 'U' or 'u', the leading n by n +* upper triangular part of the array C must contain the upper +* triangular part of the symmetric matrix and the strictly +* lower triangular part of C is not referenced. On exit, the +* upper triangular part of the array C is overwritten by the +* upper triangular part of the updated matrix. +* Before entry with UPLO = 'L' or 'l', the leading n by n +* lower triangular part of the array C must contain the lower +* triangular part of the symmetric matrix and the strictly +* upper triangular part of C is not referenced. On exit, the +* lower triangular part of the array C is overwritten by the +* lower triangular part of the updated matrix. +* +* LDC - INTEGER. +* On entry, LDC specifies the first dimension of C as declared +* in the calling (sub) program. LDC must be at least +* max( 1, n ). +* Unchanged on exit. +* +* +* Level 3 Blas routine. +* +* -- Written on 8-February-1989. +* Jack Dongarra, Argonne National Laboratory. +* Iain Duff, AERE Harwell. +* Jeremy Du Croz, Numerical Algorithms Group Ltd. +* Sven Hammarling, Numerical Algorithms Group Ltd. +* +* +* .. External Functions .. + LOGICAL LSAME + EXTERNAL LSAME +* .. +* .. External Subroutines .. + EXTERNAL XERBLA +* .. +* .. Intrinsic Functions .. + INTRINSIC MAX +* .. +* .. Local Scalars .. + COMPLEX TEMP + INTEGER I,INFO,J,L,NROWA + LOGICAL UPPER +* .. +* .. Parameters .. + COMPLEX ONE + PARAMETER (ONE= (1.0E+0,0.0E+0)) + COMPLEX ZERO + PARAMETER (ZERO= (0.0E+0,0.0E+0)) +* .. +* +* Test the input parameters. +* + IF (LSAME(TRANS,'N')) THEN + NROWA = N + ELSE + NROWA = K + END IF + UPPER = LSAME(UPLO,'U') +* + INFO = 0 + IF ((.NOT.UPPER) .AND. (.NOT.LSAME(UPLO,'L'))) THEN + INFO = 1 + ELSE IF ((.NOT.LSAME(TRANS,'N')) .AND. + + (.NOT.LSAME(TRANS,'T'))) THEN + INFO = 2 + ELSE IF (N.LT.0) THEN + INFO = 3 + ELSE IF (K.LT.0) THEN + INFO = 4 + ELSE IF (LDA.LT.MAX(1,NROWA)) THEN + INFO = 7 + ELSE IF (LDC.LT.MAX(1,N)) THEN + INFO = 10 + END IF + IF (INFO.NE.0) THEN + CALL XERBLA('CSYRK ',INFO) + RETURN + END IF +* +* Quick return if possible. +* + IF ((N.EQ.0) .OR. (((ALPHA.EQ.ZERO).OR. + + (K.EQ.0)).AND. (BETA.EQ.ONE))) RETURN +* +* And when alpha.eq.zero. +* + IF (ALPHA.EQ.ZERO) THEN + IF (UPPER) THEN + IF (BETA.EQ.ZERO) THEN + DO 20 J = 1,N + DO 10 I = 1,J + C(I,J) = ZERO + 10 CONTINUE + 20 CONTINUE + ELSE + DO 40 J = 1,N + DO 30 I = 1,J + C(I,J) = BETA*C(I,J) + 30 CONTINUE + 40 CONTINUE + END IF + ELSE + IF (BETA.EQ.ZERO) THEN + DO 60 J = 1,N + DO 50 I = J,N + C(I,J) = ZERO + 50 CONTINUE + 60 CONTINUE + ELSE + DO 80 J = 1,N + DO 70 I = J,N + C(I,J) = BETA*C(I,J) + 70 CONTINUE + 80 CONTINUE + END IF + END IF + RETURN + END IF +* +* Start the operations. +* + IF (LSAME(TRANS,'N')) THEN +* +* Form C := alpha*A*A' + beta*C. +* + IF (UPPER) THEN + DO 130 J = 1,N + IF (BETA.EQ.ZERO) THEN + DO 90 I = 1,J + C(I,J) = ZERO + 90 CONTINUE + ELSE IF (BETA.NE.ONE) THEN + DO 100 I = 1,J + C(I,J) = BETA*C(I,J) + 100 CONTINUE + END IF + DO 120 L = 1,K + IF (A(J,L).NE.ZERO) THEN + TEMP = ALPHA*A(J,L) + DO 110 I = 1,J + C(I,J) = C(I,J) + TEMP*A(I,L) + 110 CONTINUE + END IF + 120 CONTINUE + 130 CONTINUE + ELSE + DO 180 J = 1,N + IF (BETA.EQ.ZERO) THEN + DO 140 I = J,N + C(I,J) = ZERO + 140 CONTINUE + ELSE IF (BETA.NE.ONE) THEN + DO 150 I = J,N + C(I,J) = BETA*C(I,J) + 150 CONTINUE + END IF + DO 170 L = 1,K + IF (A(J,L).NE.ZERO) THEN + TEMP = ALPHA*A(J,L) + DO 160 I = J,N + C(I,J) = C(I,J) + TEMP*A(I,L) + 160 CONTINUE + END IF + 170 CONTINUE + 180 CONTINUE + END IF + ELSE +* +* Form C := alpha*A'*A + beta*C. +* + IF (UPPER) THEN + DO 210 J = 1,N + DO 200 I = 1,J + TEMP = ZERO + DO 190 L = 1,K + TEMP = TEMP + A(L,I)*A(L,J) + 190 CONTINUE + IF (BETA.EQ.ZERO) THEN + C(I,J) = ALPHA*TEMP + ELSE + C(I,J) = ALPHA*TEMP + BETA*C(I,J) + END IF + 200 CONTINUE + 210 CONTINUE + ELSE + DO 240 J = 1,N + DO 230 I = J,N + TEMP = ZERO + DO 220 L = 1,K + TEMP = TEMP + A(L,I)*A(L,J) + 220 CONTINUE + IF (BETA.EQ.ZERO) THEN + C(I,J) = ALPHA*TEMP + ELSE + C(I,J) = ALPHA*TEMP + BETA*C(I,J) + END IF + 230 CONTINUE + 240 CONTINUE + END IF + END IF +* + RETURN +* +* End of CSYRK . +* + END