dscal.f(3) LAPACK dscal.f(3)NAME
dscal.f -
SYNOPSIS
Functions/Subroutines
subroutine dscal (N, DA, DX, INCX)
DSCAL
Function/Subroutine Documentation
subroutine dscal (integerN, double precisionDA, double precision, dimension(*)DX, integerINCX)
DSCAL Purpose:
DSCAL scales a vector by a constant.
uses unrolled loops for increment equal to one.
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
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(*)
Definition at line 54 of file dscal.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 dscal.f(3)
Check Out this Related Man Page
dlar2v.f(3) LAPACK dlar2v.f(3)NAME
dlar2v.f -
SYNOPSIS
Functions/Subroutines
subroutine dlar2v (N, X, Y, Z, INCX, C, S, INCC)
DLAR2V
Function/Subroutine Documentation
subroutine dlar2v (integerN, double precision, dimension( * )X, double precision, dimension( * )Y, double precision, dimension( * )Z,
integerINCX, double precision, dimension( * )C, double precision, dimension( * )S, integerINCC)
DLAR2V
Purpose:
DLAR2V applies a vector of real plane rotations from both sides to
a sequence of 2-by-2 real symmetric matrices, defined by the elements
of the vectors x, y and z. For i = 1,2,...,n
( x(i) z(i) ) := ( c(i) s(i) ) ( x(i) z(i) ) ( c(i) -s(i) )
( z(i) y(i) ) ( -s(i) c(i) ) ( z(i) y(i) ) ( s(i) c(i) )
Parameters:
N
N is INTEGER
The number of plane rotations to be applied.
X
X is DOUBLE PRECISION array,
dimension (1+(N-1)*INCX)
The vector x.
Y
Y is DOUBLE PRECISION array,
dimension (1+(N-1)*INCX)
The vector y.
Z
Z is DOUBLE PRECISION array,
dimension (1+(N-1)*INCX)
The vector z.
INCX
INCX is INTEGER
The increment between elements of X, Y and Z. INCX > 0.
C
C is DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
The cosines of the plane rotations.
S
S is DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
The sines of the plane rotations.
INCC
INCC is INTEGER
The increment between elements of C and S. INCC > 0.
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
Definition at line 111 of file dlar2v.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.1 Sun May 26 2013 dlar2v.f(3)
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