Re: [bug-gawk] Overflow to Infinity

[arnold]

Hi.

1. What do you expect it to print instead of zero?

2. Have you any citable sources (such as from a reasonable standard) as
to how such values should print?

These are both serious questions. How to handle infinity values in
awk isn't cut and dried, since the language predates such things.

Thanks,

Arnold

Daniel Pettet <address@hidden> wrote:

> Hello,
>
> The following test program illustrates a problem with overflow of large
> numbers to what should be infinity.
>
> BEGIN {
>     n = split ("0 0.3 1e+30 1.2e+301 1.2e+311 1.2e+321 1.2e+331 1.2e+931
> 1.2e+9999 1.2e+9999999", a)
>
>     for (i=1; i<=n; ++i)
>         print a[i], +a[i]
> }
>
> With versions 4.1.4 and 4.2.1 the program output is:
>
> 0 0
> 0.3 0.3
> 1e+30 1000000000000000019884624838656
> 1.2e+301
> 12000000000000000630057123062453042984453622973297909858990249386141629495866898349436456500965374368524453325994606538123310278824325166907737506217440483794180646411118909644853962805537457080712427438819649599340973428467611690560895832913361709934951105465840682114057388033666356642385512806481920
> 1.2e+311 0
> 1.2e+321 0
> 1.2e+331 0
> 1.2e+931 0
> 1.2e+9999 0
> 1.2e+9999999 0
>
> The conversions to numbers result in zeros rather than infinities.
>
> Thanks.  Dan.