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Further refinements to complex to real FFT initialization

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This commit is contained in:
Bill Somerville 2021-10-20 19:28:58 +01:00
parent 7695b7d331
commit 30e11106c8
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GPG Key ID: D864B06D1E81618F
1 changed files with 3 additions and 3 deletions
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lib/four2a.f90
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@ -21,7 +21,7 @@ subroutine four2a(a,nfft,ndim,isign,iform)
use fftw3
parameter (NPMAX=2100) !Max numberf of stored plans
parameter (NSMALL=16384) !Max size of "small" FFTs
parameter (NSMALL=16385) !Max half complex size of "small" FFTs
complex a(nfft) !Array to be transformed
complex aa(NSMALL) !Local copy of "small" a()
integer nn(NPMAX),ns(NPMAX),nf(NPMAX) !Params of stored plans
@ -67,7 +67,7 @@ subroutine four2a(a,nfft,ndim,isign,iform)
if(nfft.le.NSMALL) then
jz=nfft
if(iform.le.0) jz=nfft/2
if(iform.le.0) jz=nfft/2+1
aa(1:jz)=a(1:jz)
endif
@ -87,7 +87,7 @@ subroutine four2a(a,nfft,ndim,isign,iform)
if(nfft.le.NSMALL) then
jz=nfft
if(iform.le.0) jz=nfft/2
if(iform.le.0) jz=nfft/2+1
a(1:jz)=aa(1:jz)
endif
end if