vcosqi(3P) Sun Performance Library vcosqi(3P)NAMEvcosqi - initialize the array WSAVE, which is used in both VCOSQF and
VCOSQB.
SYNOPSIS
SUBROUTINE VCOSQI(N, WSAVE)
INTEGER N
REAL WSAVE(*)
SUBROUTINE VCOSQI_64(N, WSAVE)
INTEGER*8 N
REAL WSAVE(*)
F95 INTERFACE
SUBROUTINE VCOSQI(N, WSAVE)
INTEGER :: N
REAL, DIMENSION(:) :: WSAVE
SUBROUTINE VCOSQI_64(N, WSAVE)
INTEGER(8) :: N
REAL, DIMENSION(:) :: WSAVE
C INTERFACE
#include <sunperf.h>
void vcosqi(int n, float *wsave);
void vcosqi_64(long n, float *wsave);
ARGUMENTS
N (input) Length of the sequence to be transformed. The method is most
efficient when N is a product of small primes.
WSAVE (input/output)
On entry, an array of dimension (2 * N + 15) or greater.
VCOSQI needs to be called only once to initialize WSAVE
before calling VCOSQF and/or VCOSQB 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.
6 Mar 2009 vcosqi(3P)
