dezfti man page on OpenIndiana

dezfti man page on OpenIndiana

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dezfti(3P)		    Sun 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.

				  6 Mar 2009			    dezfti(3P)

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