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

NAME

vdsinti - initialize the array WSAVE, which is used in subroutine VSINT.

SYNOPSIS

  SUBROUTINE VDSINTI( N, WSAVE)
  INTEGER N
  DOUBLE PRECISION WSAVE(*)

  SUBROUTINE VDSINTI_64( N, WSAVE)
  INTEGER*8 N
  DOUBLE PRECISION WSAVE(*)

F95 INTERFACE

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

  SUBROUTINE VSINTI_64( N, WSAVE)
  INTEGER(8) :: N
  REAL(8), DIMENSION(:) :: WSAVE

C INTERFACE

#include <sunperf.h>

void vdsinti(int n, double *wsave);

void vdsinti_64(long n, double *wsave);

ARGUMENTS

• N (input)
  Length of the sequence to be transformed. N > = 0.

• WSAVE (input/output)
  On entry, an array of dimension (2N + N/2 + 15) or greater. VSINTI is called once to initialize WSAVE before calling VSINT and need not be called again between calls to VSINT if N and WSAVE remain unchanged. Thus, subsequent transforms of same size can be obtained faster than the first since they do not require initialization of the workspace.