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/ IRIX Base Documentation 2001 May / SGI IRIX Base Documentation 2001 May.iso / usr / share / catman / p_man / cat3 / complib / sdfft1dui.z / sdfft1dui
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Text File  |  1998-10-30  |  3.4 KB  |  67 lines
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  4. ssssfffffffftttt1111dddduuuuiiii,,,,ddddfffffffftttt1111dddduuuuiiii((((3333FFFF))))                                    ssssfffffffftttt1111dddduuuuiiii,,,,ddddfffffffftttt1111dddduuuuiiii((((3333FFFF))))
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  8. NNNNAAAAMMMMEEEE
  9.      ssssfffffffftttt1111dddduuuuiiii,,,, ddddfffffffftttt1111dddduuuuiiii ---- 1D FFT Real to Complex workspace initialization
  10.      routines.
  11.  
  12. FFFFOOOORRRRTTTTRRRRAAAANNNN SSSSPPPPEEEECCCCIIIIFFFFIIIICCCCAAAATTTTIIIIOOOONNNN
  13.      ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee SSSSFFFFFFFFTTTT1111DDDDUUUUIIII(((( nnnn,,,, wwwwoooorrrrkkkkssssppppaaaacccceeee ))))
  14.      iiiinnnntttteeeeggggeeeerrrr              nnnn
  15.      rrrreeeeaaaallll                 wwwwoooorrrrkkkkssssppppaaaacccceeee((((****))))
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  17.      ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee DDDDFFFFFFFFTTTT1111DDDDUUUUIIII(((( nnnn,,,, wwwwoooorrrrkkkkssssppppaaaacccceeee ))))
  18.      iiiinnnntttteeeeggggeeeerrrr              nnnn
  19.      ddddoooouuuubbbblllleeee pppprrrreeeecccciiiissssiiiioooonnnn     wwwwoooorrrrkkkkssssppppaaaacccceeee((((****))))
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  22. CCCC SSSSPPPPEEEECCCCIIIIFFFFIIIICCCCAAAATTTTIIIIOOOONNNN
  23.      ddddoooouuuubbbblllleeee  ****ddddfffffffftttt1111dddduuuuiiii(((( iiiinnnntttt nnnn,,,, ddddoooouuuubbbblllleeee ****wwwwoooorrrrkkkkssssppppaaaacccceeee))));;;;
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  25.      ffffllllooooaaaatttt   ****ssssfffffffftttt1111dddduuuuiiii(((( iiiinnnntttt nnnn,,,, ffffllllooooaaaatttt ****wwwwoooorrrrkkkkssssppppaaaacccceeee))));;;;
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  28. DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
  29.      SFFT1DUI and DFFT1DUI initialize the array WORKSPACE which is used in
  30.      SFFT1DU and DFFT1DU. The prime factorization of N, together with a
  31.      tabulation of the trigonometric functions are computed and stored in
  32.      WORKSPACE.
  33.  
  34.      NOTE: These routines are provided only for compatibility with previous
  35.      releases of complib.
  36.  
  37. PPPPAAAARRRRAAAAMMMMEEEETTTTEEEERRRRSSSS
  38.      NNNN ---- IIIINNNNTTTTEEEEGGGGEEEERRRR....
  39.      On entry, N specifies the length of the sequence to be transformed.
  40.      Unchanged on exit.
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  42.      WWWWOOOORRRRKKKKSSSSPPPPAAAACCCCEEEE ---- AAAArrrrrrrraaaayyyy....
  43.      A work array which must be dimensioned at least N + 15.  It requires N
  44.      elements for the sines and cosines, plus 15 elements for the
  45.      factorization of N.
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  48. SSSSEEEEEEEE AAAALLLLSSSSOOOO
  49.      o32fft
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  63.                                                                         PPPPaaaaggggeeee 1111
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