table of contents
complex_blas_level1(3) | LAPACK | complex_blas_level1(3) |
NAME¶
complex_blas_level1SYNOPSIS¶
Functions¶
subroutine caxpy (N, CA, CX, INCX, CY, INCY)
CAXPY subroutine ccopy (N, CX, INCX, CY, INCY)
CCOPY complex function cdotc (N, CX, INCX, CY, INCY)
CDOTC complex function cdotu (N, CX, INCX, CY, INCY)
CDOTU subroutine crotg (CA, CB, C, S)
CROTG subroutine cscal (N, CA, CX, INCX)
CSCAL subroutine csrot (N, CX, INCX, CY, INCY, C, S)
CSROT subroutine csscal (N, SA, CX, INCX)
CSSCAL subroutine cswap (N, CX, INCX, CY, INCY)
CSWAP
Detailed Description¶
This is the group of complex LEVEL 1 BLAS routines.Function Documentation¶
subroutine caxpy (integer N, complex CA, complex, dimension(*) CX, integer INCX, complex, dimension(*) CY, integer INCY)¶
CAXPYPurpose:
CAXPY constant times a vector plus a vector.
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Further Details:
jack dongarra, linpack, 3/11/78. modified 12/3/93, array(1) declarations changed to array(*)
subroutine ccopy (integer N, complex, dimension(*) CX, integer INCX, complex, dimension(*) CY, integer INCY)¶
CCOPYPurpose:
CCOPY copies a vector x to a vector y.
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Further Details:
jack dongarra, linpack, 3/11/78. modified 12/3/93, array(1) declarations changed to array(*)
complex function cdotc (integer N, complex, dimension(*) CX, integer INCX, complex, dimension(*) CY, integer INCY)¶
CDOTCPurpose:
CDOTC forms the dot product of two complex vectors CDOTC = X^H * Y
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Further Details:
jack dongarra, linpack, 3/11/78. modified 12/3/93, array(1) declarations changed to array(*)
complex function cdotu (integer N, complex, dimension(*) CX, integer INCX, complex, dimension(*) CY, integer INCY)¶
CDOTUPurpose:
CDOTU forms the dot product of two complex vectors CDOTU = X^T * Y
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Further Details:
jack dongarra, linpack, 3/11/78. modified 12/3/93, array(1) declarations changed to array(*)
subroutine crotg (complex CA, complex CB, real C, complex S)¶
CROTGPurpose:
CROTG determines a complex Givens rotation.
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
subroutine cscal (integer N, complex CA, complex, dimension(*) CX, integer INCX)¶
CSCALPurpose:
CSCAL scales a vector by a constant.
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Further Details:
jack dongarra, linpack, 3/11/78. modified 3/93 to return if incx .le. 0. modified 12/3/93, array(1) declarations changed to array(*)
subroutine csrot (integer N, complex, dimension( * ) CX, integer INCX, complex, dimension( * ) CY, integer INCY, real C, real S)¶
CSROTPurpose:
CSROT applies a plane rotation, where the cos and sin (c and s) are real and the vectors cx and cy are complex. jack dongarra, linpack, 3/11/78.
Parameters:
N is INTEGER On entry, N specifies the order of the vectors cx and cy. N must be at least zero.
CX
CX is COMPLEX array, dimension at least ( 1 + ( N - 1 )*abs( INCX ) ). Before entry, the incremented array CX must contain the n element vector cx. On exit, CX is overwritten by the updated vector cx.
INCX
INCX is INTEGER On entry, INCX specifies the increment for the elements of CX. INCX must not be zero.
CY
CY is COMPLEX array, dimension at least ( 1 + ( N - 1 )*abs( INCY ) ). Before entry, the incremented array CY must contain the n element vector cy. On exit, CY is overwritten by the updated vector cy.
INCY
INCY is INTEGER On entry, INCY specifies the increment for the elements of CY. INCY must not be zero.
C
C is REAL On entry, C specifies the cosine, cos.
S
S is REAL On entry, S specifies the sine, sin.
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
subroutine csscal (integer N, real SA, complex, dimension(*) CX, integer INCX)¶
CSSCALPurpose:
CSSCAL scales a complex vector by a real constant.
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Further Details:
jack dongarra, linpack, 3/11/78. modified 3/93 to return if incx .le. 0. modified 12/3/93, array(1) declarations changed to array(*)
subroutine cswap (integer N, complex, dimension(*) CX, integer INCX, complex, dimension(*) CY, integer INCY)¶
CSWAPPurpose:
CSWAP interchanges two vectors.
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Further Details:
jack dongarra, linpack, 3/11/78. modified 12/3/93, array(1) declarations changed to array(*)
Author¶
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