dezfti (3p)

Name

dezfti - initializes the array WSAVE, which is used in both DEZFTF and DEZFTB.

Synopsis

SUBROUTINE DEZFTI(N, WSAVE)

INTEGER N
DOUBLE PRECISION WSAVE(*)

SUBROUTINE DEZFTI_64(N, WSAVE)

INTEGER*8 N
DOUBLE PRECISION WSAVE(*)




F95 INTERFACE
SUBROUTINE DEZFTI(N, WSAVE)

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

SUBROUTINE DEZFTI_64(N, WSAVE)

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




C INTERFACE
#include <sunperf.h>

void dezfti(int n, double *wsave);

void dezfti_64(long n, double *wsave);

Description

Oracle Solaris Studio Performance Library                           dezfti(3P)



NAME
       dezfti  - initializes the array WSAVE, which is used in both DEZFTF and
       DEZFTB.

SYNOPSIS
       SUBROUTINE DEZFTI(N, WSAVE)

       INTEGER N
       DOUBLE PRECISION WSAVE(*)

       SUBROUTINE DEZFTI_64(N, WSAVE)

       INTEGER*8 N
       DOUBLE PRECISION WSAVE(*)




   F95 INTERFACE
       SUBROUTINE DEZFTI(N, WSAVE)

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

       SUBROUTINE DEZFTI_64(N, WSAVE)

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




   C INTERFACE
       #include <sunperf.h>

       void dezfti(int n, double *wsave);

       void dezfti_64(long n, double *wsave);



ARGUMENTS
       N (input) Length of the sequence to be transformed.  N >= 0.

       WSAVE (input/output)
                 On entry, an array with a dimension of at least (3 * N + 15).
                 The same work array can be used for both DEZFTF and DEZFTB as
                 long as N remains  unchanged.   Different  WSAVE  arrays  are
                 required for different values of N.  This initialization does
                 not have to be repeated between calls to DEZFTF or DEZFTB  as
                 long  as N and WSAVE remain unchanged, thus subsequent trans-
                 forms can be obtained faster than the first.



                                  7 Nov 2015                        dezfti(3P)