Contents

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

NAME

     dsinqi - initialize the array xWSAVE, which is used in  both
     SINQF and SINQB.

SYNOPSIS

     SUBROUTINE DSINQI(N, WSAVE)

     INTEGER N
     DOUBLE PRECISION WSAVE(*)

     SUBROUTINE DSINQI_64(N, WSAVE)

     INTEGER*8 N
     DOUBLE PRECISION WSAVE(*)

  F95 INTERFACE
     SUBROUTINE SINQI(N, WSAVE)

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

     SUBROUTINE SINQI_64(N, WSAVE)

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

  C INTERFACE
     #include <sunperf.h>

     void dsinqi(int n, double *wsave);

     void dsinqi_64(long n, double *wsave);

ARGUMENTS

     N (input) Length of the sequence  to  be  transformed.   The
               method  is  most  efficient when N is a product of
               small primes.

     WSAVE (input)
               On entry, an array of dimension (3 * N  +  15)  or
               greater.   SINQI  needs  to be called only once to
               initialize WSAVE before calling SINQF and/or SINQB
               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 initiali-
               zation of the workspace.