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zfft3b (3)
  • >> zfft3b (3) ( Solaris man: Библиотечные вызовы )
  • 
    NAME
         zfft3b - compute a periodic sequence from its Fourier  coef-
         ficients.   The  xFFT operations are unnormalized, so a call
         of xFFT3F followed by a call of  xFFT3B  will  multiply  the
         input sequence by M*N*K.
    
    SYNOPSIS
         SUBROUTINE CFFT3B (M, N, K, CX, LDX, LD2X, RWSAVE, LWSAVE)
    
         SUBROUTINE ZFFT3B (M, N, K, ZX, LDX, LD2X, DWSAVE, LWSAVE)
    
    
    
         #include <sunperf.h>
    
         void cfft3b (int m, int n, int k, complex *cx, int ldx,  int
                   ld2x, complex *wsave, int lwsave);
    
         void zfft3b (int m, int n, int  k,  doublecomplex  *zx,  int
                   ldx, int ld2x, doublecomplex *wsave, int lwsave);
    
    ARGUMENTS
         M         Number of rows to be transformed.   These  subrou-
                   tines  are  most  efficient when M is a product of
                   small primes.  M >= 0.
    
         N         Number of columns to be transformed.   These  sub-
                   routines are most efficient when N is a product of
                   small primes.  N >= 0.
    
         K         Number of planes to be transformed.  These subrou-
                   tines  are  most  efficient when K is a product of
                   small primes.  K >= 0.
    
         xX        On entry, a three-dimensional array xX(LDX,LD2X,K)
                   that contains the sequences to be transformed.
    
         LDX       Leading dimension of the array containing the data
                   to be transformed.  LDX >= M.
    
         LD2X      Second dimension of the array containing the  data
                   to be transformed.  LD2X >= N.
    
         xWSAVE    Scratch array.  xWSAVE must have been  initialized
                   by xFFT3I.
    
         LWSAVE    Length of  WSAVE.   LWSAVE  >=  (4  *  (M  +  N  +
                   MAX(M,N,K)) + 45).
    
    
    
    


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