dsinqb (3p)

Name

dsinqb - synthesize a Fourier sequence from its representation in terms of a sine series with odd wave numbers. The SINQ operations are unnor- malized inverses of themselves, so a call to SINQF followed by a call to SINQB will multiply the input sequence by 4 * N.

Synopsis

SUBROUTINE DSINQB(N, X, WSAVE)

INTEGER N
DOUBLE PRECISION X(*), WSAVE(*)

SUBROUTINE DSINQB_64(N, X, WSAVE)

INTEGER*8 N
DOUBLE PRECISION X(*), WSAVE(*)




F95 INTERFACE
SUBROUTINE SINQB(N, X, WSAVE)

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

SUBROUTINE SINQB_64(N, X, WSAVE)

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




C INTERFACE
#include <sunperf.h>

void dsinqb(int n, double *x, double *wsave);

void dsinqb_64(long n, double *x, double *wsave);

Description

Oracle Solaris Studio Performance Library                           dsinqb(3P)



NAME
       dsinqb - synthesize a Fourier sequence from its representation in terms
       of a sine series with odd wave numbers.  The SINQ operations are unnor-
       malized  inverses  of themselves, so a call to SINQF followed by a call
       to SINQB will multiply the input sequence by 4 * N.


SYNOPSIS
       SUBROUTINE DSINQB(N, X, WSAVE)

       INTEGER N
       DOUBLE PRECISION X(*), WSAVE(*)

       SUBROUTINE DSINQB_64(N, X, WSAVE)

       INTEGER*8 N
       DOUBLE PRECISION X(*), WSAVE(*)




   F95 INTERFACE
       SUBROUTINE SINQB(N, X, WSAVE)

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

       SUBROUTINE SINQB_64(N, X, WSAVE)

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




   C INTERFACE
       #include <sunperf.h>

       void dsinqb(int n, double *x, double *wsave);

       void dsinqb_64(long n, double *x, double *wsave);



ARGUMENTS
       N (input) Length of the sequence to be transformed.  These  subroutines
                 are most efficient when N is a product of small primes.  N >=
                 0.


       X (input/output)
                 On entry, an array of length N containing the sequence to  be
                 transformed.  On exit, the quarter-wave sine synthesis of the
                 input.


       WSAVE (input)
                 On entry, an array with dimension of at least (3 *  N  +  15)
                 for scalar subroutines, initialized by SINQI.




                                  7 Nov 2015                        dsinqb(3P)