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File indexing completed on 2025-08-05 08:21:19
0001 0002 DOUBLE PRECISION FUNCTION PYTHAG(A,B) 0003 DOUBLE PRECISION A,B 0004 C 0005 C FINDS DSQRT(A**2+B**2) WITHOUT OVERFLOW OR DESTRUCTIVE UNDERFLOW 0006 C 0007 DOUBLE PRECISION P,R,S,T,U 0008 P = DMAX1(DABS(A),DABS(B)) 0009 IF (P .EQ. 0.0D0) GOTO 110 0010 R = (DMIN1(DABS(A),DABS(B))/P)**2 0011 100 CONTINUE 0012 T = 4.0D0 + R 0013 IF (T .EQ. 4.0D0) GOTO 110 0014 S = R/T 0015 U = 1.0D0 + 2.0D0*S 0016 P = U*P 0017 R = (S/U)**2 * R 0018 GOTO 100 0019 110 PYTHAG = P 0020 RETURN 0021 END
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