spfftpt.f File Reference

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Functions/Subroutines
subroutine	spfftpt (M, N, INCW, INCG, KMAX, RLON, W, G)
	THIS SUBPROGRAM COMPUTES A SLOW FOURIER TRANSFORM FROM FOURIER SPACE TO A SET OF GRIDPOINTS. More...

Detailed Description

Compute fourier transform to gridpoints

Author

IREDELL

Date

96-02-20

Definition in file spfftpt.f.

Function/Subroutine Documentation

spfftpt()

subroutine spfftpt	(	integer, intent(in)	M,
		integer, intent(in)	N,
		integer, intent(in)	INCW,
		integer, intent(in)	INCG,
		integer, intent(in)	KMAX,
		real, dimension(n), intent(in)	RLON,
		real, dimension(2*incw,kmax), intent(in)	W,
		real, dimension(incg,kmax), intent(out)	G
	)

THIS SUBPROGRAM COMPUTES A SLOW FOURIER TRANSFORM FROM FOURIER SPACE TO A SET OF GRIDPOINTS.

Parameters

M	- INTEGER FOURIER WAVENUMBER TRUNCATION
N	- INTEGER NUMBER OF GRIDPOINTS
INCW	- INTEGER FIRST DIMENSION OF THE COMPLEX AMPLITUDE ARRAY (INCW >= M+1)
INCG	- INTEGER FIRST DIMENSION OF THE GRIDPOINT ARRAY (INCG >= N)
KMAX	- INTEGER NUMBER OF FOURIER FIELDS
RLON	- REAL(N) GRID LONGITUDES IN DEGREES
W	- COMPLEX(INCW,KMAX) FOURIER AMPLITUDES
G	- REAL(INCG,KMAX) GRIDPOINT VALUES

Note

THIS SUBPROGRAM IS THREAD-SAFE.

Definition at line 22 of file spfftpt.f.