[Rd] Floating point issue

[Antoine Fabri]

Dear r-devel,

For some numbers, the printed value is not equivalent to the input :

options(scipen = 999)
## GOOD
1e24
#> [1]  999999999999999983222784
1e24 == 999999999999999983222784
#> [1] TRUE

## BAD
1e25
#> [1] 10000000000000000905969664
1e25 == 10000000000000000905969664
#> [1] FALSE

## STILL BAD
10000000000000000905969664
#> [1] 10000000000000003053453312

## GOOD AGAIN
10000000000000003053453312
#> [1] 10000000000000003053453312

# Additionally
10000000000000000000000000 == 1e25
#> [1] FALSE

Are these bugs ?

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