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Newsgroups: comp.lang.java.programmer
Subject: Re: Has Android different floats?
Date: Sun, 24 Jun 2018 15:21:46 -0500
Organization: Agency News - Dunedin, New Zealand
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To: j4n bur53
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  To: j4n bur53
From: =?UTF-8?Q?Arne_Vajh=c3=b8j?= <arne@vajhoej.dk>

On 6/24/2018 2:41 PM, j4n bur53 wrote:
> Running a simple test.
> ** is Math.pow(),
> ^ is BigInteger.pow() and then BigInteger.doubleValue().
>
> On Java:
>
>  â  ?- between(15,30,N), X is 10**N-10^N, write(N-X), nl, fail; true.
>  â  15-0.0

>  â  23-1.6777216E7

>  â  29-0.0
>  â  30-0.0
>
> On Adroid:
>
>  â  ?- between(15,30,N), X is 10**N-10^N, write(N-X), nl, fail; true.
>  â  15-0.0

>  â  23-0.0

>  â  29-1.7592186044416E13
>  â  30-0.0
>
> Has Android different floats?
> Tested jdk1.8.0_152 against Android 8.0.0

ARM supposedly use standard IEEE 754 FP.

But I wonder if usage of strictfp would change your results.

Arne

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