subroutine crot (N, CX, INCX, CY, INCY, C, S)
CROT applies a plane rotation with real cosine and complex sine to a pair of complex vectors.
CROT applies a plane rotation with real cosine and complex sine to a pair of complex vectors.
Purpose:
CROT applies a plane rotation, where the cos (C) is real and the sin (S) is complex, and the vectors CX and CY are complex.
Parameters:
N is INTEGER The number of elements in the vectors CX and CY.
CX
CX is COMPLEX array, dimension (N) On input, the vector X. On output, CX is overwritten with C*X + S*Y.
INCX
INCX is INTEGER The increment between successive values of CY. INCX <> 0.
CY
CY is COMPLEX array, dimension (N) On input, the vector Y. On output, CY is overwritten with -CONJG(S)*X + C*Y.
INCY
INCY is INTEGER The increment between successive values of CY. INCX <> 0.
C
C is REAL
S
S is COMPLEX C and S define a rotation [ C S ] [ -conjg(S) C ] where C*C + S*CONJG(S) = 1.0.
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Definition at line 105 of file crot.f.
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