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ZDFFTM
Routine Documentation— Input/Output: DOUBLE PRECISION X(N*M)
On input: X contains the M Hermitian sequences of length N to be transformed. Element i of sequence j is stored in location i+(j-1)*N of X.
On output: X contains the transformed real sequences.
CALL DZFFTM(1,N,X,COMM,INFO) CALL DZFFTM(2,N,X,COMM,INFO) DO 10 I = 1, N X(I,3) = X(I,1)*X(N-I+1,2) 10 CONTINUE CALL ZDFFTM(1,N,X(1,3),COMM,INFO) |