Contents

• NAME
• SYNOPSIS
  • F95 INTERFACE
  • C INTERFACE
• ARGUMENTS

NAME

     dsinqf - compute the Fourier coefficients in a  sine  series
     representation  with only odd wave numbers.  The SINQ opera-
     tions 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.