vdcosqi (3p)

Name

vdcosqi - initialize the array WSAVE, which is used in both VCOSQF and VCOSQB.

Synopsis

SUBROUTINE VDCOSQI(N, WSAVE)

INTEGER N
DOUBLE PRECISION WSAVE(*)

SUBROUTINE VDCOSQI_64(N, WSAVE)

INTEGER*8 N
DOUBLE PRECISION WSAVE(*)




F95 INTERFACE
SUBROUTINE VCOSQI(N, WSAVE)

INTEGER :: N
REAL(8), DIMENSION(:) :: WSAVE

SUBROUTINE VCOSQI_64(N, WSAVE)

INTEGER(8) :: N
REAL(8), DIMENSION(:) :: WSAVE




C INTERFACE
#include <sunperf.h>

void vdcosqi(int n, double *wsave);

void vdcosqi_64(long n, double *wsave);

Description

Oracle Solaris Studio Performance Library                          vdcosqi(3P)



NAME
       vdcosqi  - initialize the array WSAVE, which is used in both VCOSQF and
       VCOSQB.


SYNOPSIS
       SUBROUTINE VDCOSQI(N, WSAVE)

       INTEGER N
       DOUBLE PRECISION WSAVE(*)

       SUBROUTINE VDCOSQI_64(N, WSAVE)

       INTEGER*8 N
       DOUBLE PRECISION WSAVE(*)




   F95 INTERFACE
       SUBROUTINE VCOSQI(N, WSAVE)

       INTEGER :: N
       REAL(8), DIMENSION(:) :: WSAVE

       SUBROUTINE VCOSQI_64(N, WSAVE)

       INTEGER(8) :: N
       REAL(8), DIMENSION(:) :: WSAVE




   C INTERFACE
       #include <sunperf.h>

       void vdcosqi(int n, double *wsave);

       void vdcosqi_64(long n, double *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.
                 VDCOSQI needs to be called  only  once  to  initialize  WSAVE
                 before  calling  VDCOSQF and/or VDCOSQB 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.



                                  7 Nov 2015                       vdcosqi(3P)