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slargv.f(3) LAPACK slargv.f(3)

NAME

slargv.f -

SYNOPSIS

Functions/Subroutines


subroutine slargv (N, X, INCX, Y, INCY, C, INCC)
 
SLARGV generates a vector of plane rotations with real cosines and real sines.

Function/Subroutine Documentation

subroutine slargv (integerN, real, dimension( * )X, integerINCX, real, dimension( * )Y, integerINCY, real, dimension( * )C, integerINCC)

SLARGV generates a vector of plane rotations with real cosines and real sines.
Purpose: 
 SLARGV generates a vector of real plane rotations, determined by
 elements of the real vectors x and y. For i = 1,2,...,n


    (  c(i)  s(i) ) ( x(i) ) = ( a(i) )
    ( -s(i)  c(i) ) ( y(i) ) = (   0  )
Parameters:
N 
          N is INTEGER
          The number of plane rotations to be generated.
X 
          X is REAL array,
                         dimension (1+(N-1)*INCX)
          On entry, the vector x.
          On exit, x(i) is overwritten by a(i), for i = 1,...,n.
INCX 
          INCX is INTEGER
          The increment between elements of X. INCX > 0.
Y 
          Y is REAL array,
                         dimension (1+(N-1)*INCY)
          On entry, the vector y.
          On exit, the sines of the plane rotations.
INCY 
          INCY is INTEGER
          The increment between elements of Y. INCY > 0.
C 
          C is REAL array, dimension (1+(N-1)*INCC)
          The cosines of the plane rotations.
INCC 
          INCC is INTEGER
          The increment between elements of C. INCC > 0.
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Definition at line 105 of file slargv.f.

Author

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