zrot (3) - Linux Man Pages
subroutine zrot (integerN, complex*16, dimension( * )CX, integerINCX, complex*16, dimension( * )CY, integerINCY, double precisionC, complex*16S)
ZROT applies a plane rotation with real cosine and complex sine to a pair of complex vectors.
ZROT applies a plane rotation, where the cos (C) is real and the sin (S) is complex, and the vectors CX and CY are complex.
N is INTEGER The number of elements in the vectors CX and CY.
CX is COMPLEX*16 array, dimension (N) On input, the vector X. On output, CX is overwritten with C*X + S*Y.
INCX is INTEGER The increment between successive values of CY. INCX <> 0.
CY is COMPLEX*16 array, dimension (N) On input, the vector Y. On output, CY is overwritten with -CONJG(S)*X + C*Y.
INCY is INTEGER The increment between successive values of CY. INCX <> 0.
C is DOUBLE PRECISION
S is COMPLEX*16 C and S define a rotation [ C S ] [ -conjg(S) C ] where C*C + S*CONJG(S) = 1.0.
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Univ. of Colorado Denver
- September 2012
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