radbg.f
SUBROUTINE RADBG (IDO, IP, L1, IDL1, CC, C1, C2, CH, CH2, WA)
C***BEGIN PROLOGUE RADBG
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Warning: this routine is not intended to be user-callable.
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C***SUBSIDIARY
C***PURPOSE Calculate the fast Fourier transform of subvectors of
C arbitrary length.
C***LIBRARY SLATEC (FFTPACK)
C***TYPE SINGLE PRECISION (RADBG-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 references to intrinsic function FLOAT
C to REAL, and
C (c) changing definition of variable TPI by using
C FORTRAN intrinsic function ATAN instead of a DATA
C statement.
C 881128 Modified by Dick Valent to meet prologue standards.
C 890531 Changed all specific intrinsics to generic. (WRB)
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 RADBG