Contents
vcosti - initialize the array WSAVE, which is used in VCOST.
SUBROUTINE VCOSTI(N, WSAVE)
INTEGER N
REAL WSAVE(*)
SUBROUTINE VCOSTI_64(N, WSAVE)
INTEGER*8 N
REAL WSAVE(*)
F95 INTERFACE
SUBROUTINE VCOSTI(N, WSAVE)
INTEGER :: N
REAL, DIMENSION(:) :: WSAVE
SUBROUTINE VCOSTI_64(N, WSAVE)
INTEGER(8) :: N
REAL, DIMENSION(:) :: WSAVE
C INTERFACE
#include <sunperf.h>
void vcosti(int n, float *wsave);
void vcosti_64(long n, float *wsave);
N (input) Length of the sequence to be transformed. The
method is most efficient when N - 1 is a product
of small primes. N >= 2.
WSAVE (input)
On entry, an array of dimension (2 * N + 15) or
greater. VCOSTI is called once to initialize
WSAVE before calling VCOST and need not be called
again between calls to VCOST if N and WSAVE remain
unchanged. Thus, subsequent transforms of same
size can be obtained faster than the first since
they do not require initialization of the
workspace.