rfft3i (3p)

Name

rfft3i - initialize the array WSAVE, which is used in both RFFT3F and RFFT3B.

Synopsis

SUBROUTINE RFFT3I(M, N, K, WORK)

INTEGER M, N, K
REAL WORK(*)

SUBROUTINE RFFT3I_64(M, N, K, WORK)

INTEGER*8 M, N, K
REAL WORK(*)




C INTERFACE
#include <sunperf.h>

void rfft3i(int m, int n, int k, float *work);

void rfft3i_64(long m, long n, long k, float *work);

Description

Oracle Solaris Studio Performance Library                           rfft3i(3P)



NAME
       rfft3i  -  initialize the array WSAVE, which is used in both RFFT3F and
       RFFT3B.


SYNOPSIS
       SUBROUTINE RFFT3I(M, N, K, WORK)

       INTEGER M, N, K
       REAL WORK(*)

       SUBROUTINE RFFT3I_64(M, N, K, WORK)

       INTEGER*8 M, N, K
       REAL WORK(*)




   C INTERFACE
       #include <sunperf.h>

       void rfft3i(int m, int n, int k, float *work);

       void rfft3i_64(long m, long n, long k, float *work);



ARGUMENTS
       M (input) Number of rows to be transformed.  M >= 0.


       N (input) Number of columns to be transformed.  N >= 0.


       K (input) Number of planes to be transformed.  K >= 0.


       WORK (input/output)
                 On entry, an array of dimension (M + 2*(N + K) + 4*K + 45) or
                 greater.   RFFT3I  needs to be called only once to initialize
                 array WORK before calling RFFT3F and/or RFFT3B if M, N, K and
                 WORK  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 initializa-
                 tion of the workspace.




                                  7 Nov 2015                        rfft3i(3P)