X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=binaries%2Fsrc%2Fdisembl%2FTisean_3.0.1%2Fsource_f%2Fslatec%2Fradf3.f;fp=binaries%2Fsrc%2Fdisembl%2FTisean_3.0.1%2Fsource_f%2Fslatec%2Fradf3.f;h=6449e3259fb02cd56628dacaf8082729bd2b3bff;hb=a17c780665c109829426e062df4d75ff950725e0;hp=0000000000000000000000000000000000000000;hpb=f47da0247a9f9a8ac55571234064a0d3ded06b6c;p=jabaws.git diff --git a/binaries/src/disembl/Tisean_3.0.1/source_f/slatec/radf3.f b/binaries/src/disembl/Tisean_3.0.1/source_f/slatec/radf3.f new file mode 100644 index 0000000..6449e32 --- /dev/null +++ b/binaries/src/disembl/Tisean_3.0.1/source_f/slatec/radf3.f @@ -0,0 +1,83 @@ +*DECK RADF3 + SUBROUTINE RADF3 (IDO, L1, CC, CH, WA1, WA2) +C***BEGIN PROLOGUE RADF3 +C***SUBSIDIARY +C***PURPOSE Calculate the fast Fourier transform of subvectors of +C length three. +C***LIBRARY SLATEC (FFTPACK) +C***TYPE SINGLE PRECISION (RADF3-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 (a) changing dummy array size declarations (1) to (*), +C (b) changing definition of variable TAUI by using +C FORTRAN intrinsic function SQRT instead of a DATA +C statement. +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 RADF3 + DIMENSION CH(IDO,3,*), CC(IDO,L1,3), WA1(*), WA2(*) +C***FIRST EXECUTABLE STATEMENT RADF3 + TAUR = -.5 + TAUI = .5*SQRT(3.) + DO 101 K=1,L1 + CR2 = CC(1,K,2)+CC(1,K,3) + CH(1,1,K) = CC(1,K,1)+CR2 + CH(1,3,K) = TAUI*(CC(1,K,3)-CC(1,K,2)) + CH(IDO,2,K) = CC(1,K,1)+TAUR*CR2 + 101 CONTINUE + IF (IDO .EQ. 1) RETURN + IDP2 = IDO+2 + IF((IDO-1)/2.LT.L1) GO TO 104 + DO 103 K=1,L1 +CDIR$ IVDEP + DO 102 I=3,IDO,2 + IC = IDP2-I + DR2 = WA1(I-2)*CC(I-1,K,2)+WA1(I-1)*CC(I,K,2) + DI2 = WA1(I-2)*CC(I,K,2)-WA1(I-1)*CC(I-1,K,2) + DR3 = WA2(I-2)*CC(I-1,K,3)+WA2(I-1)*CC(I,K,3) + DI3 = WA2(I-2)*CC(I,K,3)-WA2(I-1)*CC(I-1,K,3) + CR2 = DR2+DR3 + CI2 = DI2+DI3 + CH(I-1,1,K) = CC(I-1,K,1)+CR2 + CH(I,1,K) = CC(I,K,1)+CI2 + TR2 = CC(I-1,K,1)+TAUR*CR2 + TI2 = CC(I,K,1)+TAUR*CI2 + TR3 = TAUI*(DI2-DI3) + TI3 = TAUI*(DR3-DR2) + CH(I-1,3,K) = TR2+TR3 + CH(IC-1,2,K) = TR2-TR3 + CH(I,3,K) = TI2+TI3 + CH(IC,2,K) = TI3-TI2 + 102 CONTINUE + 103 CONTINUE + RETURN + 104 DO 106 I=3,IDO,2 + IC = IDP2-I +CDIR$ IVDEP + DO 105 K=1,L1 + DR2 = WA1(I-2)*CC(I-1,K,2)+WA1(I-1)*CC(I,K,2) + DI2 = WA1(I-2)*CC(I,K,2)-WA1(I-1)*CC(I-1,K,2) + DR3 = WA2(I-2)*CC(I-1,K,3)+WA2(I-1)*CC(I,K,3) + DI3 = WA2(I-2)*CC(I,K,3)-WA2(I-1)*CC(I-1,K,3) + CR2 = DR2+DR3 + CI2 = DI2+DI3 + CH(I-1,1,K) = CC(I-1,K,1)+CR2 + CH(I,1,K) = CC(I,K,1)+CI2 + TR2 = CC(I-1,K,1)+TAUR*CR2 + TI2 = CC(I,K,1)+TAUR*CI2 + TR3 = TAUI*(DI2-DI3) + TI3 = TAUI*(DR3-DR2) + CH(I-1,3,K) = TR2+TR3 + CH(IC-1,2,K) = TR2-TR3 + CH(I,3,K) = TI2+TI3 + CH(IC,2,K) = TI3-TI2 + 105 CONTINUE + 106 CONTINUE + RETURN + END