dsinqf (3p)

Name

dsinqf - tion with only odd wave numbers. The SINQ operations are unnormalized inverses of themselves, so a call to SINQF followed by a call to SINQB will multiply the input sequence by 4 * N.

Synopsis

SUBROUTINE DSINQF(N, X, WSAVE)

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

SUBROUTINE DSINQF_64(N, X, WSAVE)

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




F95 INTERFACE
SUBROUTINE SINQF(N, X, WSAVE)

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

SUBROUTINE SINQF_64(N, X, WSAVE)

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




C INTERFACE
#include <sunperf.h>

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

void dsinqf_64(long n, double *x, double *wsave);

Description

Oracle Solaris Studio Performance Library                           dsinqf(3P)



NAME
       dsinqf  - compute the Fourier coefficients in a sine series representa-
       tion with only odd wave numbers.  The SINQ operations are  unnormalized
       inverses  of themselves, so a call to SINQF followed by a call to SINQB
       will multiply the input sequence by 4 * N.


SYNOPSIS
       SUBROUTINE DSINQF(N, X, WSAVE)

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

       SUBROUTINE DSINQF_64(N, X, WSAVE)

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




   F95 INTERFACE
       SUBROUTINE SINQF(N, X, WSAVE)

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

       SUBROUTINE SINQF_64(N, X, WSAVE)

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




   C INTERFACE
       #include <sunperf.h>

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

       void dsinqf_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 transform 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                        dsinqf(3P)