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Re: [ccp4bb]: REFMAC5 under CCP4 4.1
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>
Here is very small program wich behaves differently with -O2 (result 6 1) and
-O0 (result 6 6). This type of code may be seen
everywhere (red hat version 7.0, gcc 2.96 g77 0.5.24)
Garib
REAL AMAT(20),TEST
INTEGER N
TEST = 1
TEST = TEST*2
TEST = TEST*3
N = 20
DO I=1,N
AMAT(I) = I
ENDDO
DO I=1,N
IF(TEST.EQ.AMAT(I)) GOTO 10
ENDDO
TEST = TEST*4
10 WRITE(*,*)TEST,I
STOP
END
--
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Garib N. Murshudov, Chemistry Department, University of York, U.K.
Tel: Home +44 (1904) 42 62 87, work: +44 (1904) 43 25 65
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