[R] integer ranges in R vs C and Java
saptarshi.guha at gmail.com
Sat May 2 23:20:45 CEST 2009
I'm using R-2.9 and have a question about integer ranges. On C, (OS X
LONG_MIN and LONG_MAX(from limits.h) correspond to -2147483648(-2^31)
and 2147483647 (2^31-1)
In Java(1.4), Integer.MIN_VALUE and Integer.MAX_VALUE have the same values.
On R, as.integer(2^31-1) is the maximum (without returning NA) but the
lowest is -2147483647 (-2^31+1)
So in both Java and C can hold 2^32 different values, but R holds 2^32
-1 different values.
Have I made a mistake? Is there a reason for the difference?
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