zffti man page on OpenIndiana

Man page or keyword search:  
man Server   20441 pages
apropos Keyword Search (all sections)
Output format
OpenIndiana logo
[printable version]

zffti(3P)		    Sun Performance Library		     zffti(3P)

NAME
       zffti  -	 initialize  the  array WSAVE, which is used in both ZFFTF and
       ZFFTB.

SYNOPSIS
       SUBROUTINE ZFFTI(N, WSAVE)

       INTEGER N
       DOUBLE PRECISION WSAVE(*)

       SUBROUTINE ZFFTI_64(N, WSAVE)

       INTEGER*8 N
       DOUBLE PRECISION WSAVE(*)

   F95 INTERFACE
       SUBROUTINE ZFFTI(N, WSAVE)

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

       SUBROUTINE ZFFTI_64(N, WSAVE)

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

   C INTERFACE
       #include <sunperf.h>

       void zffti(int n, double *wsave);

       void zffti_64(long n, double *wsave);

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

       WSAVE (input/output)
		 On entry, an array of dimension (4 *  N  +  15)  or  greater.
		 ZFFTI	needs  to be called only once to initialize array WORK
		 before calling ZFFTF and/or  ZFFTB  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			     zffti(3P)
[top]

List of man pages available for OpenIndiana

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net