share/fftpack5/fortran/sint1f.f

   1 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
   2 C
   3 C   FFTPACK 5.0
   4 C
   5 C   Authors:  Paul N. Swarztrauber and Richard A. Valent
   6 C
   7 C   $Id$
   8 C
   9 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
  10
  11       SUBROUTINE SINT1F ( N, INC, X, LENX, WSAVE, LENSAV,
  12      1                   WORK, LENWRK, IER)
  13       INTEGER    N, INC, LENX, LENSAV, LENWRK, IER
  14       REAL       X(INC,*), WSAVE(LENSAV), WORK(LENWRK)
  15 C
  16       IER = 0
  17       IF (LENX .LT. INC*(N-1) + 1) THEN
  18         IER = 1
  19         CALL XERFFT ('SINT1F', 6)
  20         GO TO 100
  21       ELSEIF (LENSAV .LT. N/2 + N + INT(LOG(REAL(N))/LOG(2.)) +4) THEN
  22         IER = 2
  23         CALL XERFFT ('SINT1F', 8)
  24         GO TO 100
  25       ELSEIF (LENWRK .LT. (2*N+2)) THEN
  26         IER = 3
  27         CALL XERFFT ('SINT1F', 10)
  28         GO TO 100
  29       ENDIF
  30 C
  31       CALL SINTF1(N,INC,X,WSAVE,WORK,WORK(N+2),IER1)
  32       IF (IER1 .NE. 0) THEN
  33         IER = 20
  34         CALL XERFFT ('SINT1F',-5)
  35       ENDIF
  36   100 CONTINUE
  37       RETURN
  38       END