Mac binaries

[jabaws.git] / website / archive / binaries / mac / src / disembl / Tisean_3.0.1 / source_f / slatec / radb2.f

diff --git a/website/archive/binaries/mac/src/disembl/Tisean_3.0.1/source_f/slatec/radb2.f b/website/archive/binaries/mac/src/disembl/Tisean_3.0.1/source_f/slatec/radb2.f
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+*DECK RADB2
+      SUBROUTINE RADB2 (IDO, L1, CC, CH, WA1)
+C***BEGIN PROLOGUE  RADB2
+C***SUBSIDIARY
+C***PURPOSE  Calculate the fast Fourier transform of subvectors of
+C            length two.
+C***LIBRARY   SLATEC (FFTPACK)
+C***TYPE      SINGLE PRECISION (RADB2-S)
+C***AUTHOR  Swarztrauber, P. N., (NCAR)
+C***ROUTINES CALLED  (NONE)
+C***REVISION HISTORY  (YYMMDD)
+C   790601  DATE WRITTEN
+C   830401  Modified to use SLATEC library source file format.
+C   860115  Modified by Ron Boisvert to adhere to Fortran 77 by
+C           changing dummy array size declarations (1) to (*).
+C   881128  Modified by Dick Valent to meet prologue standards.
+C   890831  Modified array declarations.  (WRB)
+C   891214  Prologue converted to Version 4.0 format.  (BAB)
+C   900402  Added TYPE section.  (WRB)
+C***END PROLOGUE  RADB2
+      DIMENSION CC(IDO,2,*), CH(IDO,L1,2), WA1(*)
+C***FIRST EXECUTABLE STATEMENT  RADB2
+      DO 101 K=1,L1
+         CH(1,K,1) = CC(1,1,K)+CC(IDO,2,K)
+         CH(1,K,2) = CC(1,1,K)-CC(IDO,2,K)
+  101 CONTINUE
+      IF (IDO-2) 107,105,102
+  102 IDP2 = IDO+2
+      IF((IDO-1)/2.LT.L1) GO TO 108
+      DO 104 K=1,L1
+CDIR$ IVDEP
+         DO 103 I=3,IDO,2
+            IC = IDP2-I
+            CH(I-1,K,1) = CC(I-1,1,K)+CC(IC-1,2,K)
+            TR2 = CC(I-1,1,K)-CC(IC-1,2,K)
+            CH(I,K,1) = CC(I,1,K)-CC(IC,2,K)
+            TI2 = CC(I,1,K)+CC(IC,2,K)
+            CH(I-1,K,2) = WA1(I-2)*TR2-WA1(I-1)*TI2
+            CH(I,K,2) = WA1(I-2)*TI2+WA1(I-1)*TR2
+  103    CONTINUE
+  104 CONTINUE
+      GO TO 111
+  108 DO 110 I=3,IDO,2
+         IC = IDP2-I
+CDIR$ IVDEP
+         DO 109 K=1,L1
+            CH(I-1,K,1) = CC(I-1,1,K)+CC(IC-1,2,K)
+            TR2 = CC(I-1,1,K)-CC(IC-1,2,K)
+            CH(I,K,1) = CC(I,1,K)-CC(IC,2,K)
+            TI2 = CC(I,1,K)+CC(IC,2,K)
+            CH(I-1,K,2) = WA1(I-2)*TR2-WA1(I-1)*TI2
+            CH(I,K,2) = WA1(I-2)*TI2+WA1(I-1)*TR2
+  109    CONTINUE
+  110 CONTINUE
+  111 IF (MOD(IDO,2) .EQ. 1) RETURN
+  105 DO 106 K=1,L1
+         CH(IDO,K,1) = CC(IDO,1,K)+CC(IDO,1,K)
+         CH(IDO,K,2) = -(CC(1,2,K)+CC(1,2,K))
+  106 CONTINUE
+  107 RETURN
+      END