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/wrfv2_fire/external/fftpack/fftpack5/r1f5kb.F

http://github.com/jbeezley/wrf-fire
FORTRAN Legacy | 115 lines | 89 code | 1 blank | 25 comment | 0 complexity | 360e16738d281ff8c84d56f3ba7e387d MD5 | raw file
Possible License(s): AGPL-1.0
  1. !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
  2. !
  3. ! FFTPACK 5.0
  4. !
  5. ! Authors: Paul N. Swarztrauber and Richard A. Valent
  6. !
  7. ! $Id: r1f5kb.f,v 1.2 2004/06/15 21:29:20 rodney Exp $
  8. !
  9. !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
  10. SUBROUTINE R1F5KB (IDO,L1,CC,IN1,CH,IN2, &
  11. & WA1,WA2,WA3,WA4)
  12. REAL CC(IN1,IDO,5,L1) ,CH(IN2,IDO,L1,5), &
  13. & WA1(IDO) ,WA2(IDO) ,WA3(IDO) ,WA4(IDO)
  14. !
  15. ARG=2.*4.*ATAN(1.0)/5.
  16. TR11=COS(ARG)
  17. TI11=SIN(ARG)
  18. TR12=COS(2.*ARG)
  19. TI12=SIN(2.*ARG)
  20. DO 101 K=1,L1
  21. CH(1,1,K,1) = CC(1,1,1,K)+2.*CC(1,IDO,2,K)+2.*CC(1,IDO,4,K)
  22. CH(1,1,K,2) = (CC(1,1,1,K)+TR11*2.*CC(1,IDO,2,K) &
  23. & +TR12*2.*CC(1,IDO,4,K))-(TI11*2.*CC(1,1,3,K) &
  24. & +TI12*2.*CC(1,1,5,K))
  25. CH(1,1,K,3) = (CC(1,1,1,K)+TR12*2.*CC(1,IDO,2,K) &
  26. & +TR11*2.*CC(1,IDO,4,K))-(TI12*2.*CC(1,1,3,K) &
  27. & -TI11*2.*CC(1,1,5,K))
  28. CH(1,1,K,4) = (CC(1,1,1,K)+TR12*2.*CC(1,IDO,2,K) &
  29. & +TR11*2.*CC(1,IDO,4,K))+(TI12*2.*CC(1,1,3,K) &
  30. & -TI11*2.*CC(1,1,5,K))
  31. CH(1,1,K,5) = (CC(1,1,1,K)+TR11*2.*CC(1,IDO,2,K) &
  32. & +TR12*2.*CC(1,IDO,4,K))+(TI11*2.*CC(1,1,3,K) &
  33. & +TI12*2.*CC(1,1,5,K))
  34. 101 END DO
  35. IF (IDO .EQ. 1) RETURN
  36. IDP2 = IDO+2
  37. DO 103 K=1,L1
  38. DO 102 I=3,IDO,2
  39. IC = IDP2-I
  40. CH(1,I-1,K,1) = CC(1,I-1,1,K)+(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) &
  41. & +(CC(1,I-1,5,K)+CC(1,IC-1,4,K))
  42. CH(1,I,K,1) = CC(1,I,1,K)+(CC(1,I,3,K)-CC(1,IC,2,K)) &
  43. & +(CC(1,I,5,K)-CC(1,IC,4,K))
  44. CH(1,I-1,K,2) = WA1(I-2)*((CC(1,I-1,1,K)+TR11* &
  45. & (CC(1,I-1,3,K)+CC(1,IC-1,2,K))+TR12 &
  46. & *(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))-(TI11*(CC(1,I,3,K) &
  47. & +CC(1,IC,2,K))+TI12*(CC(1,I,5,K)+CC(1,IC,4,K)))) &
  48. & -WA1(I-1)*((CC(1,I,1,K)+TR11*(CC(1,I,3,K)-CC(1,IC,2,K)) &
  49. & +TR12*(CC(1,I,5,K)-CC(1,IC,4,K)))+(TI11*(CC(1,I-1,3,K) &
  50. & -CC(1,IC-1,2,K))+TI12*(CC(1,I-1,5,K)-CC(1,IC-1,4,K))))
  51. CH(1,I,K,2) = WA1(I-2)*((CC(1,I,1,K)+TR11*(CC(1,I,3,K) &
  52. & -CC(1,IC,2,K))+TR12*(CC(1,I,5,K)-CC(1,IC,4,K))) &
  53. & +(TI11*(CC(1,I-1,3,K)-CC(1,IC-1,2,K))+TI12 &
  54. & *(CC(1,I-1,5,K)-CC(1,IC-1,4,K))))+WA1(I-1) &
  55. & *((CC(1,I-1,1,K)+TR11*(CC(1,I-1,3,K) &
  56. & +CC(1,IC-1,2,K))+TR12*(CC(1,I-1,5,K)+CC(1,IC-1,4,K))) &
  57. & -(TI11*(CC(1,I,3,K)+CC(1,IC,2,K))+TI12 &
  58. & *(CC(1,I,5,K)+CC(1,IC,4,K))))
  59. CH(1,I-1,K,3) = WA2(I-2) &
  60. & *((CC(1,I-1,1,K)+TR12*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) &
  61. & +TR11*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))-(TI12*(CC(1,I,3,K) &
  62. & +CC(1,IC,2,K))-TI11*(CC(1,I,5,K)+CC(1,IC,4,K)))) &
  63. & -WA2(I-1) &
  64. & *((CC(1,I,1,K)+TR12*(CC(1,I,3,K)- &
  65. & CC(1,IC,2,K))+TR11*(CC(1,I,5,K)-CC(1,IC,4,K))) &
  66. & +(TI12*(CC(1,I-1,3,K)-CC(1,IC-1,2,K))-TI11 &
  67. & *(CC(1,I-1,5,K)-CC(1,IC-1,4,K))))
  68. CH(1,I,K,3) = WA2(I-2) &
  69. & *((CC(1,I,1,K)+TR12*(CC(1,I,3,K)- &
  70. & CC(1,IC,2,K))+TR11*(CC(1,I,5,K)-CC(1,IC,4,K))) &
  71. & +(TI12*(CC(1,I-1,3,K)-CC(1,IC-1,2,K))-TI11 &
  72. & *(CC(1,I-1,5,K)-CC(1,IC-1,4,K)))) &
  73. & +WA2(I-1) &
  74. & *((CC(1,I-1,1,K)+TR12*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) &
  75. & +TR11*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))-(TI12*(CC(1,I,3,K) &
  76. & +CC(1,IC,2,K))-TI11*(CC(1,I,5,K)+CC(1,IC,4,K))))
  77. CH(1,I-1,K,4) = WA3(I-2) &
  78. & *((CC(1,I-1,1,K)+TR12*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) &
  79. & +TR11*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))+(TI12*(CC(1,I,3,K) &
  80. & +CC(1,IC,2,K))-TI11*(CC(1,I,5,K)+CC(1,IC,4,K)))) &
  81. & -WA3(I-1) &
  82. & *((CC(1,I,1,K)+TR12*(CC(1,I,3,K)- &
  83. & CC(1,IC,2,K))+TR11*(CC(1,I,5,K)-CC(1,IC,4,K))) &
  84. & -(TI12*(CC(1,I-1,3,K)-CC(1,IC-1,2,K))-TI11 &
  85. & *(CC(1,I-1,5,K)-CC(1,IC-1,4,K))))
  86. CH(1,I,K,4) = WA3(I-2) &
  87. & *((CC(1,I,1,K)+TR12*(CC(1,I,3,K)- &
  88. & CC(1,IC,2,K))+TR11*(CC(1,I,5,K)-CC(1,IC,4,K))) &
  89. & -(TI12*(CC(1,I-1,3,K)-CC(1,IC-1,2,K))-TI11 &
  90. & *(CC(1,I-1,5,K)-CC(1,IC-1,4,K)))) &
  91. & +WA3(I-1) &
  92. & *((CC(1,I-1,1,K)+TR12*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) &
  93. & +TR11*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))+(TI12*(CC(1,I,3,K) &
  94. & +CC(1,IC,2,K))-TI11*(CC(1,I,5,K)+CC(1,IC,4,K))))
  95. CH(1,I-1,K,5) = WA4(I-2) &
  96. & *((CC(1,I-1,1,K)+TR11*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) &
  97. & +TR12*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))+(TI11*(CC(1,I,3,K) &
  98. & +CC(1,IC,2,K))+TI12*(CC(1,I,5,K)+CC(1,IC,4,K)))) &
  99. & -WA4(I-1) &
  100. & *((CC(1,I,1,K)+TR11*(CC(1,I,3,K)-CC(1,IC,2,K)) &
  101. & +TR12*(CC(1,I,5,K)-CC(1,IC,4,K)))-(TI11*(CC(1,I-1,3,K) &
  102. & -CC(1,IC-1,2,K))+TI12*(CC(1,I-1,5,K)-CC(1,IC-1,4,K))))
  103. CH(1,I,K,5) = WA4(I-2) &
  104. & *((CC(1,I,1,K)+TR11*(CC(1,I,3,K)-CC(1,IC,2,K)) &
  105. & +TR12*(CC(1,I,5,K)-CC(1,IC,4,K)))-(TI11*(CC(1,I-1,3,K) &
  106. & -CC(1,IC-1,2,K))+TI12*(CC(1,I-1,5,K)-CC(1,IC-1,4,K)))) &
  107. & +WA4(I-1) &
  108. & *((CC(1,I-1,1,K)+TR11*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) &
  109. & +TR12*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))+(TI11*(CC(1,I,3,K) &
  110. & +CC(1,IC,2,K))+TI12*(CC(1,I,5,K)+CC(1,IC,4,K))))
  111. 102 CONTINUE
  112. 103 END DO
  113. RETURN
  114. END