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Reads Precision Error? [message #3678]

Sun, 05 March 1995 00:26

chris
Messages: 22
Registered: October 1994

Junior Member

Hi Folks,

I didn't see this in the FAQ, but it appears that the very
useful reads command fails to preserve double precision, EVEN if
the target variables are defined double precision beforehand.

Example:

three = [0.123456789012345d0,1.d0,1.d0]
a = 1.d0 & b = 1.d0 & c=1.d0 ;initalize double
reads,three,a,b,c
print,three(0),a,f='(D40.30)'

And you get:

0.123456789012344997358283649191
0.123456789999999996809698643574
^
Error in the 10th place.

Any ideas?
-chris

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