sinqi
sinqi - initialize the array xWSAVE, which is used in both SINQF and SINQB.
SUBROUTINE SINQI( N, WSAVE)
INTEGER N
REAL WSAVE(*)
SUBROUTINE SINQI_64( N, WSAVE)
INTEGER*8 N
REAL WSAVE(*)
SUBROUTINE SINQI( N, WSAVE)
INTEGER :: N
REAL, DIMENSION(:) :: WSAVE
SUBROUTINE SINQI_64( N, WSAVE)
INTEGER(8) :: N
REAL, DIMENSION(:) :: WSAVE
#include <sunperf.h>
void sinqi(int n, float *wsave);
void sinqi_64(long n, float *wsave);
-
* N (input)
-
Length of the sequence to be transformed. The method is most
efficient when N is a product of small primes.
-
* WSAVE (input)
-
On entry, an array of dimension (3 * N + 15) or greater. SINQI needs to be
called only once to initialize WSAVE before calling SINQF and/or SINQB if N
and WSAVE remain unchanged between these calls. Thus, subsequent transforms or
inverse transforms of same size can be obtained faster than the first since
they do not require initialization of the workspace.